curl https://start.spring.io/starter.zip \
  -d type=maven-project \
  -d language=java \
  -d bootVersion=3.2.0 \
  -d baseDir=ip-geolocation \
  -d groupId=com.example \
  -d artifactId=ip-geolocation \
  -d name=ip-geolocation \
  -d description=IP地址解析服務(wù) \
  -d packageName=com.example.ip \
  -d packaging=jar \
  -d javaVersion=17 \
  -d dependencies=web,validation,aop \
  -o ip-geolocation.zip

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
         https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.2.0</version>
        <relativePath/>
    </parent>
    
    <groupId>com.example</groupId>
    <artifactId>ip-geolocation</artifactId>
    <version>1.0.0</version>
    <name>ip-geolocation</name>
    
    <properties>
        <java.version>17</java.version>
        <geoip2.version>4.0.1</geoip2.version>
        <ip2region.version>2.7.0</version>
        <maxmind.db.version>3.0.0</version>
        <caffeine.version>3.1.8</caffeine.version>
    </properties>
    
    <dependencies>
        <!-- Spring Boot Starters -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-validation</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-cache</artifactId>
        </dependency>
        
        <!-- IP解析庫 -->
        <dependency>
            <groupId>com.maxmind.geoip2</groupId>
            <artifactId>geoip2</artifactId>
            <version>${geoip2.version}</version>
        </dependency>
        
        <!-- 本地IP庫 -->
        <dependency>
            <groupId>org.lionsoul</groupId>
            <artifactId>ip2region</artifactId>
            <version>${ip2region.version}</version>
        </dependency>
        
        <!-- 緩存 -->
        <dependency>
            <groupId>com.github.ben-manes.caffeine</groupId>
            <artifactId>caffeine</artifactId>
            <version>${caffeine.version}</version>
        </dependency>
        
        <!-- 工具類 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
        </dependency>
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>32.1.3-jre</version>
        </dependency>
        
        <!-- 測試 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

# application.yml
spring:
  application:
    name: ip-geolocation-service
  
  cache:
    type: caffeine
    caffeine:
      spec: maximumSize=10000,expireAfterWrite=10m

# IP解析配置
ip:
  geolocation:
    # 使用哪種解析方式: offline(離線), online(在線), hybrid(混合)
    mode: hybrid
    
    # 離線解析配置
    offline:
      # 離線數(shù)據(jù)庫類型: maxmind, ip2region
      database: ip2region
      # 數(shù)據(jù)庫文件路徑
      maxmind-db-path: classpath:geoip/GeoLite2-City.mmdb
      ip2region-db-path: classpath:geoip/ip2region.xdb
    
    # 在線解析配置
    online:
      # 啟用在線解析
      enabled: true
      # 在線服務(wù)提供商: ipapi, ipstack, taobao, baidu
      providers:
        - name: ipapi
          url: http://ip-api.com/json/{ip}?lang=zh-CN
          priority: 1
          timeout: 3000
        - name: taobao
          url: http://ip.taobao.com/service/getIpInfo.php?ip={ip}
          priority: 2
          timeout: 5000
      
    # 緩存配置
    cache:
      enabled: true
      # 本地緩存時間(秒)
      local-ttl: 3600
      # Redis緩存時間(秒)
      redis-ttl: 86400
      
    # 監(jiān)控配置
    monitor:
      enabled: true
      # 統(tǒng)計窗口大小
      window-size: 100
      
# 自定義配置
custom:
  ip:
    # 內(nèi)網(wǎng)IP范圍
    internal-ranges:
      - "10.0.0.0/8"
      - "172.16.0.0/12"
      - "192.168.0.0/16"
      - "127.0.0.0/8"
      - "169.254.0.0/16"
    
    # 敏感操作記錄IP
    sensitive-operations:
      - "/api/admin/**"
      - "/api/user/password/**"
      - "/api/payment/**"

// IP地址工具類
@Component
public class IpAddressUtils {
    
    /**
     * 驗證IP地址格式
     */
    public static boolean isValidIpAddress(String ip) {
        if (ip == null || ip.isEmpty()) {
            return false;
        }
        
        // IPv4驗證
        if (ip.contains(".")) {
            return isValidIPv4(ip);
        }
        
        // IPv6驗證
        if (ip.contains(":")) {
            return isValidIPv6(ip);
        }
        
        return false;
    }
    
    /**
     * 驗證IPv4地址
     */
    private static boolean isValidIPv4(String ip) {
        try {
            String[] parts = ip.split("\\.");
            if (parts.length != 4) {
                return false;
            }
            
            for (String part : parts) {
                int num = Integer.parseInt(part);
                if (num < 0 || num > 255) {
                    return false;
                }
            }
            
            return !ip.endsWith(".");
        } catch (NumberFormatException e) {
            return false;
        }
    }
    
    /**
     * 驗證IPv6地址
     */
    private static boolean isValidIPv6(String ip) {
        try {
            // 簡化驗證，實際項目可使用Inet6Address
            if (ip == null || ip.isEmpty()) {
                return false;
            }
            
            // 處理壓縮格式
            if (ip.contains("::")) {
                if (ip.indexOf("::") != ip.lastIndexOf("::")) {
                    return false; // 只能有一個::
                }
            }
            
            // 分割各部分
            String[] parts = ip.split(":");
            if (parts.length > 8 || parts.length < 3) {
                return false;
            }
            
            return true;
        } catch (Exception e) {
            return false;
        }
    }
    
    /**
     * 將IP地址轉(zhuǎn)換為長整型
     */
    public static long ipToLong(String ip) {
        if (!isValidIPv4(ip)) {
            throw new IllegalArgumentException("Invalid IPv4 address: " + ip);
        }
        
        String[] parts = ip.split("\\.");
        long result = 0;
        
        for (int i = 0; i < 4; i++) {
            result = result << 8;
            result += Integer.parseInt(parts[i]);
        }
        
        return result;
    }
    
    /**
     * 將長整型轉(zhuǎn)換為IP地址
     */
    public static String longToIp(long ip) {
        return ((ip >> 24) & 0xFF) + "." +
               ((ip >> 16) & 0xFF) + "." +
               ((ip >> 8) & 0xFF) + "." +
               (ip & 0xFF);
    }
    
    /**
     * 判斷是否為內(nèi)網(wǎng)IP
     */
    public static boolean isInternalIp(String ip) {
        if (!isValidIPv4(ip)) {
            return false;
        }
        
        long ipLong = ipToLong(ip);
        
        // 10.0.0.0 - 10.255.255.255
        if (ipLong >= 0x0A000000L && ipLong <= 0x0AFFFFFFL) {
            return true;
        }
        
        // 172.16.0.0 - 172.31.255.255
        if (ipLong >= 0xAC100000L && ipLong <= 0xAC1FFFFFL) {
            return true;
        }
        
        // 192.168.0.0 - 192.168.255.255
        if (ipLong >= 0xC0A80000L && ipLong <= 0xC0A8FFFFL) {
            return true;
        }
        
        // 127.0.0.0 - 127.255.255.255
        if (ipLong >= 0x7F000000L && ipLong <= 0x7FFFFFFFL) {
            return true;
        }
        
        // 169.254.0.0 - 169.254.255.255
        if (ipLong >= 0xA9FE0000L && ipLong <= 0xA9FEFFFFL) {
            return true;
        }
        
        return false;
    }
    
    /**
     * 獲取客戶端真實IP（處理代理）
     */
    public static String getClientIp(HttpServletRequest request) {
        // 常見代理頭
        String[] headers = {
            "X-Forwarded-For",
            "Proxy-Client-IP",
            "WL-Proxy-Client-IP",
            "HTTP_X_FORWARDED_FOR",
            "HTTP_X_FORWARDED",
            "HTTP_X_CLUSTER_CLIENT_IP",
            "HTTP_CLIENT_IP",
            "HTTP_FORWARDED_FOR",
            "HTTP_FORWARDED",
            "HTTP_VIA",
            "REMOTE_ADDR"
        };
        
        for (String header : headers) {
            String ip = request.getHeader(header);
            if (ip != null && ip.length() > 0 && !"unknown".equalsIgnoreCase(ip)) {
                // 多次代理的情況，取第一個IP
                if (ip.contains(",")) {
                    ip = ip.split(",")[0].trim();
                }
                if (isValidIpAddress(ip) && !isInternalIp(ip)) {
                    return ip;
                }
            }
        }
        
        // 如果沒有獲取到，使用遠(yuǎn)程地址
        return request.getRemoteAddr();
    }
}

@Component
public class CidrUtils {
    
    /**
     * CIDR轉(zhuǎn)IP范圍
     */
    public static long[] cidrToRange(String cidr) {
        String[] parts = cidr.split("/");
        if (parts.length != 2) {
            throw new IllegalArgumentException("Invalid CIDR format: " + cidr);
        }
        
        String ip = parts[0];
        int prefixLength = Integer.parseInt(parts[1]);
        
        long ipLong = IpAddressUtils.ipToLong(ip);
        long mask = 0xFFFFFFFFL << (32 - prefixLength);
        
        long network = ipLong & mask;
        long broadcast = network | (~mask & 0xFFFFFFFFL);
        
        return new long[]{network, broadcast};
    }
    
    /**
     * 判斷IP是否在CIDR范圍內(nèi)
     */
    public static boolean isIpInCidr(String ip, String cidr) {
        long ipLong = IpAddressUtils.ipToLong(ip);
        long[] range = cidrToRange(cidr);
        
        return ipLong >= range[0] && ipLong <= range[1];
    }
    
    /**
     * 獲取子網(wǎng)掩碼
     */
    public static String getSubnetMask(int prefixLength) {
        long mask = 0xFFFFFFFFL << (32 - prefixLength);
        return IpAddressUtils.longToIp(mask);
    }
    
    /**
     * 計算可用IP數(shù)量
     */
    public static long getAvailableIpCount(String cidr) {
        long[] range = cidrToRange(cidr);
        return range[1] - range[0] + 1;
    }
}

@Configuration
@ConfigurationProperties(prefix = "ip.geolocation.offline")
@Data
public class GeoIpConfig {
    
    private String database = "maxmind";
    private String maxmindDbPath = "classpath:geoip/GeoLite2-City.mmdb";
    private String ip2regionDbPath = "classpath:geoip/ip2region.xdb";
    
    @Bean
    @ConditionalOnProperty(name = "ip.geolocation.offline.database", 
                          havingValue = "maxmind")
    public DatabaseReader maxmindDatabaseReader() throws IOException {
        Resource resource = new ClassPathResource(
            maxmindDbPath.replace("classpath:", ""));
        
        File database = resource.getFile();
        return new DatabaseReader.Builder(database).build();
    }
}

@Service
@Slf4j
@ConditionalOnProperty(name = "ip.geolocation.offline.database", 
                      havingValue = "maxmind")
public class MaxmindGeoIpService implements GeoIpService {
    
    private final DatabaseReader databaseReader;
    private final Cache<String, GeoLocation> cache;
    
    public MaxmindGeoIpService(DatabaseReader databaseReader) {
        this.databaseReader = databaseReader;
        
        // 初始化緩存
        this.cache = Caffeine.newBuilder()
            .maximumSize(10000)
            .expireAfterWrite(10, TimeUnit.MINUTES)
            .recordStats()
            .build();
    }
    
    @Override
    public GeoLocation query(String ip) {
        // 先從緩存獲取
        return cache.get(ip, this::queryFromDatabase);
    }
    
    private GeoLocation queryFromDatabase(String ip) {
        try {
            InetAddress ipAddress = InetAddress.getByName(ip);
            CityResponse response = databaseReader.city(ipAddress);
            
            GeoLocation location = new GeoLocation();
            location.setIp(ip);
            location.setCountry(response.getCountry().getName());
            location.setCountryCode(response.getCountry().getIsoCode());
            location.setRegion(response.getMostSpecificSubdivision().getName());
            location.setCity(response.getCity().getName());
            location.setPostalCode(response.getPostal().getCode());
            
            if (response.getLocation() != null) {
                location.setLatitude(response.getLocation().getLatitude());
                location.setLongitude(response.getLocation().getLongitude());
                location.setTimeZone(response.getLocation().getTimeZone());
            }
            
            location.setSource("MaxMind");
            location.setTimestamp(System.currentTimeMillis());
            
            return location;
            
        } catch (AddressNotFoundException e) {
            log.warn("IP address not found in database: {}", ip);
            return createUnknownLocation(ip);
        } catch (Exception e) {
            log.error("Error querying MaxMind database for IP: {}", ip, e);
            throw new GeoIpException("Failed to query IP location", e);
        }
    }
    
    private GeoLocation createUnknownLocation(String ip) {
        GeoLocation location = new GeoLocation();
        location.setIp(ip);
        location.setCountry("Unknown");
        location.setSource("MaxMind");
        location.setTimestamp(System.currentTimeMillis());
        return location;
    }
    
    @Override
    public boolean isAvailable() {
        return databaseReader != null;
    }
    
    @Override
    public String getProviderName() {
        return "MaxMind";
    }
    
    @PreDestroy
    public void shutdown() {
        try {
            if (databaseReader != null) {
                databaseReader.close();
            }
        } catch (IOException e) {
            log.error("Error closing MaxMind database reader", e);
        }
    }
}

@Slf4j
@Service
@ConditionalOnProperty(name = "ip.geolocation.offline.database", 
                      havingValue = "ip2region")
public class Ip2RegionService implements GeoIpService {
    
    private Searcher searcher;
    private final Cache<String, GeoLocation> cache;
    
    @Value("${ip.geolocation.offline.ip2region-db-path}")
    private String dbPath;
    
    public Ip2RegionService() {
        // 初始化緩存
        this.cache = Caffeine.newBuilder()
            .maximumSize(10000)
            .expireAfterWrite(10, TimeUnit.MINUTES)
            .recordStats()
            .build();
        
        // 延遲初始化數(shù)據(jù)庫
        initializeDatabase();
    }
    
    private void initializeDatabase() {
        try {
            Resource resource = new ClassPathResource(
                dbPath.replace("classpath:", ""));
            
            // 加載數(shù)據(jù)庫文件到內(nèi)存
            byte[] dbBinStr = Files.readAllBytes(resource.getFile().toPath());
            
            // 創(chuàng)建完全基于內(nèi)存的查詢對象
            this.searcher = Searcher.newWithBuffer(dbBinStr);
            
            log.info("ip2region database loaded successfully");
        } catch (Exception e) {
            log.error("Failed to initialize ip2region database", e);
            throw new GeoIpException("Failed to initialize ip2region", e);
        }
    }
    
    @Override
    public GeoLocation query(String ip) {
        return cache.get(ip, this::queryFromDatabase);
    }
    
    private GeoLocation queryFromDatabase(String ip) {
        try {
            String region = searcher.search(ip);
            
            // ip2region格式：國家|區(qū)域|省份|城市|ISP
            String[] regions = region.split("\\|");
            
            GeoLocation location = new GeoLocation();
            location.setIp(ip);
            
            if (regions.length >= 5) {
                location.setCountry(parseCountry(regions[0]));
                location.setRegion(regions[2]); // 省份
                location.setCity(regions[3]);   // 城市
                location.setIsp(regions[4]);    // ISP
            }
            
            location.setSource("ip2region");
            location.setTimestamp(System.currentTimeMillis());
            
            return location;
            
        } catch (Exception e) {
            log.error("Error querying ip2region for IP: {}", ip, e);
            return createUnknownLocation(ip);
        }
    }
    
    private String parseCountry(String countryStr) {
        if ("中國".equals(countryStr)) {
            return "China";
        } else if ("0".equals(countryStr)) {
            return "Unknown";
        }
        return countryStr;
    }
    
    private GeoLocation createUnknownLocation(String ip) {
        GeoLocation location = new GeoLocation();
        location.setIp(ip);
        location.setCountry("Unknown");
        location.setSource("ip2region");
        location.setTimestamp(System.currentTimeMillis());
        return location;
    }
    
    @Override
    public boolean isAvailable() {
        return searcher != null;
    }
    
    @Override
    public String getProviderName() {
        return "ip2region";
    }
}

@Data
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class GeoLocation {
    
    /**
     * 查詢的IP地址
     */
    private String ip;
    
    /**
     * 國家名稱
     */
    private String country;
    
    /**
     * 國家代碼（ISO 3166-1 alpha-2）
     */
    private String countryCode;
    
    /**
     * 區(qū)域/省份
     */
    private String region;
    
    /**
     * 城市
     */
    private String city;
    
    /**
     * 區(qū)縣
     */
    private String district;
    
    /**
     * 郵政編碼
     */
    private String postalCode;
    
    /**
     * 緯度
     */
    private Double latitude;
    
    /**
     * 經(jīng)度
     */
    private Double longitude;
    
    /**
     * 時區(qū)
     */
    private String timeZone;
    
    /**
     * 互聯(lián)網(wǎng)服務(wù)提供商
     */
    private String isp;
    
    /**
     * 組織
     */
    private String organization;
    
    /**
     * AS號碼和名稱
     */
    private String as;
    
    /**
     * AS名稱
     */
    private String asName;
    
    /**
     * 是否移動網(wǎng)絡(luò)
     */
    private Boolean mobile;
    
    /**
     * 是否代理
     */
    private Boolean proxy;
    
    /**
     * 是否托管
     */
    private Boolean hosting;
    
    /**
     * 數(shù)據(jù)來源
     */
    private String source;
    
    /**
     * 查詢時間戳
     */
    private Long timestamp;
    
    /**
     * 緩存過期時間
     */
    private Long expiresAt;
    
    /**
     * 原始響應(yīng)數(shù)據(jù)
     */
    private String rawData;
    
    /**
     * 是否成功
     */
    @Builder.Default
    private Boolean success = true;
    
    /**
     * 錯誤信息
     */
    private String error;
    
    /**
     * 響應(yīng)時間（毫秒）
     */
    private Long responseTime;
    
    /**
     * 是否內(nèi)網(wǎng)IP
     */
    private Boolean internal;
    
    /**
     * 可信度評分（0-100）
     */
    @Builder.Default
    private Integer confidence = 100;
}

@Data
@ConfigurationProperties(prefix = "ip.geolocation.online")
@Configuration
public class OnlineProviderConfig {
    
    @Data
    public static class Provider {
        private String name;
        private String url;
        private Integer priority = 1;
        private Integer timeout = 3000;
        private String apiKey;
        private Boolean enabled = true;
        private Map<String, String> headers = new HashMap<>();
        private Map<String, String> params = new HashMap<>();
    }
    
    private List<Provider> providers = new ArrayList<>();
    
    @Bean
    public List<GeoIpProvider> geoIpProviders(RestTemplate restTemplate) {
        return providers.stream()
            .filter(Provider::getEnabled)
            .sorted(Comparator.comparing(Provider::getPriority))
            .map(config -> createProvider(config, restTemplate))
            .collect(Collectors.toList());
    }
    
    private GeoIpProvider createProvider(Provider config, RestTemplate restTemplate) {
        switch (config.getName().toLowerCase()) {
            case "ipapi":
                return new IpApiProvider(config, restTemplate);
            case "ipstack":
                return new IpStackProvider(config, restTemplate);
            case "taobao":
                return new TaobaoIpProvider(config, restTemplate);
            case "baidu":
                return new BaiduIpProvider(config, restTemplate);
            default:
                throw new IllegalArgumentException(
                    "Unknown provider: " + config.getName());
        }
    }
}

@Slf4j
@Component
public class IpApiProvider implements GeoIpProvider {
    
    private final RestTemplate restTemplate;
    private final OnlineProviderConfig.Provider config;
    
    public IpApiProvider(OnlineProviderConfig.Provider config, 
                        RestTemplate restTemplate) {
        this.config = config;
        this.restTemplate = restTemplate;
    }
    
    @Override
    public GeoLocation query(String ip) {
        long startTime = System.currentTimeMillis();
        
        try {
            String url = buildUrl(ip);
            
            ResponseEntity<Map> response = restTemplate.exchange(
                url, HttpMethod.GET, null, Map.class);
            
            Map<String, Object> data = response.getBody();
            
            if (data == null) {
                throw new GeoIpException("Empty response from IP-API");
            }
            
            String status = (String) data.get("status");
            if (!"success".equals(status)) {
                String message = (String) data.get("message");
                throw new GeoIpException("IP-API error: " + message);
            }
            
            GeoLocation location = parseResponse(data);
            location.setResponseTime(System.currentTimeMillis() - startTime);
            
            return location;
            
        } catch (Exception e) {
            log.warn("Failed to query IP-API for IP: {}", ip, e);
            throw new GeoIpException("IP-API query failed", e);
        }
    }
    
    private String buildUrl(String ip) {
        return config.getUrl().replace("{ip}", ip);
    }
    
    private GeoLocation parseResponse(Map<String, Object> data) {
        return GeoLocation.builder()
            .country((String) data.get("country"))
            .countryCode((String) data.get("countryCode"))
            .region((String) data.get("regionName"))
            .city((String) data.get("city"))
            .postalCode((String) data.get("zip"))
            .latitude(Double.parseDouble(data.get("lat").toString()))
            .longitude(Double.parseDouble(data.get("lon").toString()))
            .timeZone((String) data.get("timezone"))
            .isp((String) data.get("isp"))
            .organization((String) data.get("org"))
            .as((String) data.get("as"))
            .mobile(Boolean.parseBoolean(data.get("mobile").toString()))
            .proxy(Boolean.parseBoolean(data.get("proxy").toString()))
            .hosting(Boolean.parseBoolean(data.get("hosting").toString()))
            .source("IP-API")
            .timestamp(System.currentTimeMillis())
            .rawData(JsonUtils.toJson(data))
            .build();
    }
    
    @Override
    public String getName() {
        return "IP-API";
    }
    
    @Override
    public int getPriority() {
        return config.getPriority();
    }
}

@Slf4j
@Component
public class TaobaoIpProvider implements GeoIpProvider {
    
    private final RestTemplate restTemplate;
    private final OnlineProviderConfig.Provider config;
    
    public TaobaoIpProvider(OnlineProviderConfig.Provider config,
                           RestTemplate restTemplate) {
        this.config = config;
        this.restTemplate = restTemplate;
    }
    
    @Override
    public GeoLocation query(String ip) {
        long startTime = System.currentTimeMillis();
        
        try {
            String url = buildUrl(ip);
            
            ResponseEntity<String> response = restTemplate.exchange(
                url, HttpMethod.GET, null, String.class);
            
            String responseBody = response.getBody();
            
            if (responseBody == null) {
                throw new GeoIpException("Empty response from Taobao IP");
            }
            
            // 解析淘寶返回的JSON
            Map<String, Object> data = JsonUtils.parse(responseBody, Map.class);
            
            Number code = (Number) data.get("code");
            if (code == null || code.intValue() != 0) {
                throw new GeoIpException("Taobao IP API error: " + data.get("msg"));
            }
            
            Map<String, Object> ipData = (Map<String, Object>) data.get("data");
            
            GeoLocation location = parseResponse(ip, ipData);
            location.setResponseTime(System.currentTimeMillis() - startTime);
            
            return location;
            
        } catch (Exception e) {
            log.warn("Failed to query Taobao IP for IP: {}", ip, e);
            throw new GeoIpException("Taobao IP query failed", e);
        }
    }
    
    private String buildUrl(String ip) {
        return config.getUrl().replace("{ip}", ip);
    }
    
    private GeoLocation parseResponse(String ip, Map<String, Object> data) {
        return GeoLocation.builder()
            .ip(ip)
            .country("中國")
            .countryCode("CN")
            .region((String) data.get("region"))
            .city((String) data.get("city"))
            .isp((String) data.get("isp"))
            .source("Taobao")
            .timestamp(System.currentTimeMillis())
            .rawData(JsonUtils.toJson(data))
            .build();
    }
    
    @Override
    public String getName() {
        return "Taobao IP";
    }
    
    @Override
    public int getPriority() {
        return config.getPriority();
    }
}

@Service
@Slf4j
public class GeoIpManager implements GeoIpService {
    
    private final List<GeoIpProvider> onlineProviders;
    private final List<GeoIpService> offlineServices;
    private final Cache<String, GeoLocation> cache;
    private final GeoIpProperties properties;
    
    @Autowired
    public GeoIpManager(List<GeoIpProvider> onlineProviders,
                       List<GeoIpService> offlineServices,
                       GeoIpProperties properties) {
        this.onlineProviders = onlineProviders;
        this.offlineServices = offlineServices;
        this.properties = properties;
        
        // 初始化緩存
        this.cache = Caffeine.newBuilder()
            .maximumSize(properties.getCache().getMaximumSize())
            .expireAfterWrite(properties.getCache().getLocalTtl(), 
                            TimeUnit.SECONDS)
            .recordStats()
            .build();
    }
    
    @Override
    public GeoLocation query(String ip) {
        // 參數(shù)驗證
        if (!IpAddressUtils.isValidIpAddress(ip)) {
            throw new IllegalArgumentException("Invalid IP address: " + ip);
        }
        
        // 檢查是否為內(nèi)網(wǎng)IP
        if (IpAddressUtils.isInternalIp(ip)) {
            return createInternalLocation(ip);
        }
        
        // 嘗試從緩存獲取
        GeoLocation cached = cache.getIfPresent(ip);
        if (cached != null && 
            cached.getExpiresAt() > System.currentTimeMillis()) {
            return cached;
        }
        
        // 根據(jù)配置模式執(zhí)行查詢
        GeoLocation location;
        switch (properties.getMode()) {
            case "offline":
                location = queryOffline(ip);
                break;
            case "online":
                location = queryOnline(ip);
                break;
            case "hybrid":
            default:
                location = queryHybrid(ip);
                break;
        }
        
        // 設(shè)置緩存過期時間
        if (location != null && location.getSuccess()) {
            location.setExpiresAt(
                System.currentTimeMillis() + 
                properties.getCache().getLocalTtl() * 1000);
            cache.put(ip, location);
        }
        
        return location;
    }
    
    private GeoLocation queryOffline(String ip) {
        for (GeoIpService service : offlineServices) {
            try {
                if (service.isAvailable()) {
                    return service.query(ip);
                }
            } catch (Exception e) {
                log.warn("Offline service {} failed for IP: {}", 
                        service.getProviderName(), ip, e);
            }
        }
        
        throw new GeoIpException("All offline services failed");
    }
    
    private GeoLocation queryOnline(String ip) {
        for (GeoIpProvider provider : onlineProviders) {
            try {
                GeoLocation location = provider.query(ip);
                if (location != null && location.getSuccess()) {
                    return location;
                }
            } catch (Exception e) {
                log.warn("Online provider {} failed for IP: {}", 
                        provider.getName(), ip, e);
            }
        }
        
        throw new GeoIpException("All online providers failed");
    }
    
    private GeoLocation queryHybrid(String ip) {
        // 首先嘗試離線查詢
        for (GeoIpService service : offlineServices) {
            try {
                if (service.isAvailable()) {
                    return service.query(ip);
                }
            } catch (Exception e) {
                log.debug("Offline service failed, trying online providers");
            }
        }
        
        // 離線失敗則嘗試在線查詢
        return queryOnline(ip);
    }
    
    private GeoLocation createInternalLocation(String ip) {
        return GeoLocation.builder()
            .ip(ip)
            .country("Internal")
            .city("Internal Network")
            .internal(true)
            .success(true)
            .source("System")
            .timestamp(System.currentTimeMillis())
            .build();
    }
    
    @Override
    public boolean isAvailable() {
        return !offlineServices.isEmpty() || !onlineProviders.isEmpty();
    }
    
    @Override
    public String getProviderName() {
        return "GeoIpManager";
    }
    
    /**
     * 批量查詢
     */
    public Map<String, GeoLocation> batchQuery(List<String> ips) {
        Map<String, GeoLocation> results = new ConcurrentHashMap<>();
        
        ExecutorService executor = Executors.newFixedThreadPool(
            Math.min(ips.size(), 10));
        
        List<Future<?>> futures = new ArrayList<>();
        
        for (String ip : ips) {
            futures.add(executor.submit(() -> {
                try {
                    GeoLocation location = query(ip);
                    results.put(ip, location);
                } catch (Exception e) {
                    log.error("Failed to query IP: {}", ip, e);
                    results.put(ip, createErrorLocation(ip, e.getMessage()));
                }
            }));
        }
        
        // 等待所有任務(wù)完成
        for (Future<?> future : futures) {
            try {
                future.get();
            } catch (Exception e) {
                log.error("Error waiting for query task", e);
            }
        }
        
        executor.shutdown();
        
        return results;
    }
    
    private GeoLocation createErrorLocation(String ip, String error) {
        return GeoLocation.builder()
            .ip(ip)
            .success(false)
            .error(error)
            .source("System")
            .timestamp(System.currentTimeMillis())
            .build();
    }
    
    /**
     * 獲取緩存統(tǒng)計信息
     */
    public CacheStats getCacheStats() {
        return cache.stats();
    }
    
    /**
     * 清空緩存
     */
    public void clearCache() {
        cache.invalidateAll();
    }
}

@Configuration
@EnableConfigurationProperties(GeoIpProperties.class)
@ConditionalOnClass(GeoIpService.class)
@AutoConfigureAfter(WebMvcAutoConfiguration.class)
public class GeoIpAutoConfiguration {
    
    @Bean
    @ConditionalOnMissingBean
    public RestTemplate geoIpRestTemplate() {
        RestTemplate restTemplate = new RestTemplate();
        
        // 設(shè)置超時時間
        SimpleClientHttpRequestFactory factory = 
            new SimpleClientHttpRequestFactory();
        factory.setConnectTimeout(5000);
        factory.setReadTimeout(10000);
        restTemplate.setRequestFactory(factory);
        
        // 添加攔截器
        restTemplate.getInterceptors().add(new GeoIpRequestInterceptor());
        
        return restTemplate;
    }
    
    @Bean
    @ConditionalOnMissingBean
    public ObjectMapper geoIpObjectMapper() {
        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        mapper.setPropertyNamingStrategy(PropertyNamingStrategies.SNAKE_CASE);
        mapper.registerModule(new JavaTimeModule());
        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
        return mapper;
    }
    
    @Bean
    @ConditionalOnMissingBean
    public GeoIpManager geoIpManager(List<GeoIpProvider> onlineProviders,
                                     List<GeoIpService> offlineServices,
                                     GeoIpProperties properties) {
        return new GeoIpManager(onlineProviders, offlineServices, properties);
    }
    
    @Bean
    @ConditionalOnMissingBean
    public GeoIpAspect geoIpAspect(GeoIpManager geoIpManager) {
        return new GeoIpAspect(geoIpManager);
    }
    
    @Bean
    @ConditionalOnMissingBean
    public IpAddressUtils ipAddressUtils() {
        return new IpAddressUtils();
    }
}

/**
 * HTTP請求攔截器
 */
class GeoIpRequestInterceptor implements ClientHttpRequestInterceptor {
    
    @Override
    public ClientHttpResponse intercept(HttpRequest request, byte[] body,
                                       ClientHttpRequestExecution execution) 
                                       throws IOException {
        // 添加User-Agent
        request.getHeaders().add("User-Agent", 
            "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36");
        
        // 記錄請求開始時間
        long startTime = System.currentTimeMillis();
        
        ClientHttpResponse response = execution.execute(request, body);
        
        // 記錄請求耗時
        long duration = System.currentTimeMillis() - startTime;
        log.debug("HTTP request to {} completed in {}ms", 
                 request.getURI(), duration);
        
        return response;
    }
}

@Data
@ConfigurationProperties(prefix = "ip.geolocation")
@Validated
public class GeoIpProperties {
    
    @NotNull
    @Pattern(regexp = "offline|online|hybrid")
    private String mode = "hybrid";
    
    private Offline offline = new Offline();
    private Online online = new Online();
    private Cache cache = new Cache();
    private Monitor monitor = new Monitor();
    
    @Data
    public static class Offline {
        private String database = "ip2region";
        private String maxmindDbPath = "classpath:geoip/GeoLite2-City.mmdb";
        private String ip2regionDbPath = "classpath:geoip/ip2region.xdb";
        private Boolean enabled = true;
    }
    
    @Data
    public static class Online {
        private Boolean enabled = true;
        private Integer timeout = 5000;
        private Integer retryCount = 2;
        private List<Provider> providers = new ArrayList<>();
    }
    
    @Data
    public static class Provider {
        private String name;
        private String url;
        private Integer priority = 1;
        private Integer timeout = 3000;
        private String apiKey;
        private Boolean enabled = true;
    }
    
    @Data
    public static class Cache {
        private Boolean enabled = true;
        private Long localTtl = 3600L;
        private Long redisTtl = 86400L;
        private Long maximumSize = 10000L;
        private Boolean recordStats = true;
    }
    
    @Data
    public static class Monitor {
        private Boolean enabled = true;
        private Integer windowSize = 100;
        private Long statsInterval = 60000L;
    }
}

@Aspect
@Component
@Slf4j
public class GeoIpAspect {
    
    private final GeoIpManager geoIpManager;
    private final ThreadLocal<GeoLocation> currentLocation = new ThreadLocal<>();
    
    public GeoIpAspect(GeoIpManager geoIpManager) {
        this.geoIpManager = geoIpManager;
    }
    
    /**
     * 攔截Controller方法，自動注入IP位置信息
     */
    @Around("@annotation(org.springframework.web.bind.annotation.RequestMapping) || " +
            "@annotation(org.springframework.web.bind.annotation.GetMapping) || " +
            "@annotation(org.springframework.web.bind.annotation.PostMapping) || " +
            "@annotation(org.springframework.web.bind.annotation.PutMapping) || " +
            "@annotation(org.springframework.web.bind.annotation.DeleteMapping)")
    public Object injectGeoLocation(ProceedingJoinPoint joinPoint) throws Throwable {
        // 獲取HttpServletRequest
        HttpServletRequest request = getHttpServletRequest(joinPoint);
        
        if (request != null) {
            // 獲取客戶端IP
            String clientIp = IpAddressUtils.getClientIp(request);
            
            // 查詢位置信息
            GeoLocation location = geoIpManager.query(clientIp);
            
            // 存儲到ThreadLocal
            currentLocation.set(location);
            
            // 設(shè)置到請求屬性中
            request.setAttribute("geoLocation", location);
            request.setAttribute("clientIp", clientIp);
            
            log.debug("Injected geo location for IP: {}, Country: {}", 
                     clientIp, location.getCountry());
        }
        
        try {
            return joinPoint.proceed();
        } finally {
            // 清理ThreadLocal
            currentLocation.remove();
        }
    }
    
    /**
     * 獲取當(dāng)前請求的位置信息
     */
    public GeoLocation getCurrentLocation() {
        return currentLocation.get();
    }
    
    private HttpServletRequest getHttpServletRequest(ProceedingJoinPoint joinPoint) {
        Object[] args = joinPoint.getArgs();
        
        for (Object arg : args) {
            if (arg instanceof HttpServletRequest) {
                return (HttpServletRequest) arg;
            }
        }
        
        // 嘗試從RequestContextHolder獲取
        ServletRequestAttributes attributes = 
            (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        
        if (attributes != null) {
            return attributes.getRequest();
        }
        
        return null;
    }
}

@RestController
@RequestMapping("/api/v1/ip")
@Validated
@Slf4j
@Tag(name = "IP地址解析", description = "IP地理位置查詢API")
public class IpGeoController {
    
    private final GeoIpManager geoIpManager;
    private final IpAddressUtils ipAddressUtils;
    
    @Autowired
    public IpGeoController(GeoIpManager geoIpManager, 
                          IpAddressUtils ipAddressUtils) {
        this.geoIpManager = geoIpManager;
        this.ipAddressUtils = ipAddressUtils;
    }
    
    /**
     * 查詢單個IP地址信息
     */
    @GetMapping("/query")
    @Operation(summary = "查詢IP地理位置", 
               description = "根據(jù)IP地址查詢地理位置信息")
    @ApiResponse(responseCode = "200", description = "查詢成功")
    @ApiResponse(responseCode = "400", description = "請求參數(shù)錯誤")
    public ResponseEntity<ApiResponse<GeoLocation>> queryIp(
            @RequestParam @Pattern(regexp = 
                "^((25[0-5]|2[0-4]\\d|[01]?\\d\\d?)\\.){3}(25[0-5]|2[0-4]\\d|[01]?\\d\\d?)$",
                message = "IP地址格式不正確") String ip) {
        
        GeoLocation location = geoIpManager.query(ip);
        
        return ResponseEntity.ok(ApiResponse.success(location));
    }
    
    /**
     * 查詢當(dāng)前請求的IP地址信息
     */
    @GetMapping("/current")
    @Operation(summary = "查詢當(dāng)前請求IP", 
               description = "獲取當(dāng)前請求客戶端的地理位置信息")
    public ResponseEntity<ApiResponse<GeoLocation>> queryCurrentIp(
            HttpServletRequest request) {
        
        String clientIp = ipAddressUtils.getClientIp(request);
        GeoLocation location = geoIpManager.query(clientIp);
        
        return ResponseEntity.ok(ApiResponse.success(location));
    }
    
    /**
     * 批量查詢IP地址信息
     */
    @PostMapping("/batch-query")
    @Operation(summary = "批量查詢IP地理位置", 
               description = "批量查詢多個IP地址的地理位置信息")
    public ResponseEntity<ApiResponse<Map<String, GeoLocation>>> batchQueryIp(
            @RequestBody @Valid BatchQueryRequest request) {
        
        // 限制批量查詢數(shù)量
        if (request.getIps().size() > 100) {
            throw new IllegalArgumentException("批量查詢最多支持100個IP地址");
        }
        
        // 驗證IP地址格式
        for (String ip : request.getIps()) {
            if (!ipAddressUtils.isValidIpAddress(ip)) {
                throw new IllegalArgumentException("無效的IP地址: " + ip);
            }
        }
        
        Map<String, GeoLocation> results = geoIpManager.batchQuery(request.getIps());
        
        return ResponseEntity.ok(ApiResponse.success(results));
    }
    
    /**
     * 驗證IP地址
     */
    @GetMapping("/validate")
    @Operation(summary = "驗證IP地址", 
               description = "驗證IP地址格式和類型")
    public ResponseEntity<ApiResponse<IpValidationResult>> validateIp(
            @RequestParam String ip) {
        
        boolean isValid = ipAddressUtils.isValidIpAddress(ip);
        boolean isInternal = ipAddressUtils.isInternalIp(ip);
        String ipType = ip.contains(":") ? "IPv6" : "IPv4";
        
        IpValidationResult result = IpValidationResult.builder()
            .ip(ip)
            .valid(isValid)
            .internal(isInternal)
            .type(ipType)
            .build();
        
        return ResponseEntity.ok(ApiResponse.success(result));
    }
    
    /**
     * 獲取服務(wù)狀態(tài)
     */
    @GetMapping("/status")
    @Operation(summary = "獲取服務(wù)狀態(tài)", 
               description = "獲取IP解析服務(wù)的狀態(tài)信息")
    public ResponseEntity<ApiResponse<ServiceStatus>> getServiceStatus() {
        CacheStats stats = geoIpManager.getCacheStats();
        
        ServiceStatus status = ServiceStatus.builder()
            .cacheHits(stats.hitCount())
            .cacheMisses(stats.missCount())
            .cacheHitRate(stats.hitRate())
            .cacheSize(stats.evictionCount())
            .build();
        
        return ResponseEntity.ok(ApiResponse.success(status));
    }
    
    /**
     * 清空緩存
     */
    @PostMapping("/cache/clear")
    @Operation(summary = "清空緩存", 
               description = "清空IP地理位置查詢緩存")
    @PreAuthorize("hasRole('ADMIN')")
    public ResponseEntity<ApiResponse<Void>> clearCache() {
        geoIpManager.clearCache();
        
        return ResponseEntity.ok(ApiResponse.success());
    }
    
    @Data
    @Builder
    public static class IpValidationResult {
        private String ip;
        private boolean valid;
        private boolean internal;
        private String type;
        private String message;
    }
    
    @Data
    @Builder
    public static class ServiceStatus {
        private long cacheHits;
        private long cacheMisses;
        private double cacheHitRate;
        private long cacheSize;
        private Date timestamp;
    }
    
    @Data
    public static class BatchQueryRequest {
        @NotNull
        @Size(min = 1, max = 100, message = "IP數(shù)量必須在1-100之間")
        private List<String> ips;
    }
}

@Data
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class ApiResponse<T> {
    
    private boolean success;
    private String code;
    private String message;
    private T data;
    private Long timestamp;
    private String requestId;
    
    public static <T> ApiResponse<T> success(T data) {
        return ApiResponse.<T>builder()
            .success(true)
            .code("200")
            .message("Success")
            .data(data)
            .timestamp(System.currentTimeMillis())
            .build();
    }
    
    public static ApiResponse<Void> success() {
        return ApiResponse.<Void>builder()
            .success(true)
            .code("200")
            .message("Success")
            .timestamp(System.currentTimeMillis())
            .build();
    }
    
    public static ApiResponse<Void> error(String code, String message) {
        return ApiResponse.<Void>builder()
            .success(false)
            .code(code)
            .message(message)
            .timestamp(System.currentTimeMillis())
            .build();
    }
}

@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {
    
    @ExceptionHandler(GeoIpException.class)
    public ResponseEntity<ApiResponse<Void>> handleGeoIpException(
            GeoIpException ex) {
        
        log.error("GeoIP service error", ex);
        
        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR)
            .body(ApiResponse.error("GEOIP_ERROR", ex.getMessage()));
    }
    
    @ExceptionHandler(IllegalArgumentException.class)
    public ResponseEntity<ApiResponse<Void>> handleIllegalArgumentException(
            IllegalArgumentException ex) {
        
        return ResponseEntity.status(HttpStatus.BAD_REQUEST)
            .body(ApiResponse.error("INVALID_PARAM", ex.getMessage()));
    }
    
    @ExceptionHandler(ConstraintViolationException.class)
    public ResponseEntity<ApiResponse<Void>> handleConstraintViolationException(
            ConstraintViolationException ex) {
        
        String message = ex.getConstraintViolations().stream()
            .map(ConstraintViolation::getMessage)
            .collect(Collectors.joining(", "));
        
        return ResponseEntity.status(HttpStatus.BAD_REQUEST)
            .body(ApiResponse.error("VALIDATION_ERROR", message));
    }
    
    @ExceptionHandler(Exception.class)
    public ResponseEntity<ApiResponse<Void>> handleGenericException(
            Exception ex) {
        
        log.error("Unexpected error", ex);
        
        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR)
            .body(ApiResponse.error("INTERNAL_ERROR", "Internal server error"));
    }
}

/**
 * 自定義異常類
 */
public class GeoIpException extends RuntimeException {
    
    public GeoIpException(String message) {
        super(message);
    }
    
    public GeoIpException(String message, Throwable cause) {
        super(message, cause);
    }
}

@Component
@Slf4j
public class GeoIpDatabaseUpdater {
    
    private final GeoIpProperties properties;
    private final ApplicationEventPublisher eventPublisher;
    
    @Autowired
    public GeoIpDatabaseUpdater(GeoIpProperties properties,
                               ApplicationEventPublisher eventPublisher) {
        this.properties = properties;
        this.eventPublisher = eventPublisher;
    }
    
    @Scheduled(cron = "0 0 2 * * ?") // 每天凌晨2點執(zhí)行
    public void scheduledUpdate() {
        log.info("Starting scheduled GeoIP database update");
        
        try {
            if ("maxmind".equals(properties.getOffline().getDatabase())) {
                updateMaxmindDatabase();
            } else if ("ip2region".equals(properties.getOffline().getDatabase())) {
                updateIp2RegionDatabase();
            }
            
            log.info("GeoIP database update completed successfully");
            
            // 發(fā)布更新完成事件
            eventPublisher.publishEvent(new DatabaseUpdateEvent(this, true));
            
        } catch (Exception e) {
            log.error("Failed to update GeoIP database", e);
            
            // 發(fā)布更新失敗事件
            eventPublisher.publishEvent(new DatabaseUpdateEvent(this, false));
        }
    }
    
    private void updateMaxmindDatabase() throws IOException {
        String downloadUrl = "https://download.maxmind.com/app/geoip_download" +
                           "?edition_id=GeoLite2-City&license_key=YOUR_LICENSE_KEY&suffix=tar.gz";
        
        // 下載數(shù)據(jù)庫文件
        File tempFile = downloadFile(downloadUrl);
        
        // 解壓文件
        File extractedDir = extractTarGz(tempFile);
        
        // 查找.mmdb文件
        File mmdbFile = findMmdbFile(extractedDir);
        
        if (mmdbFile == null) {
            throw new IOException("Could not find .mmdb file in downloaded archive");
        }
        
        // 備份原文件
        File originalFile = new File(properties.getOffline().getMaxmindDbPath()
                                    .replace("classpath:", ""));
        File backupFile = new File(originalFile.getParent(), 
                                  originalFile.getName() + ".bak");
        
        Files.copy(originalFile.toPath(), backupFile.toPath(), 
                  StandardCopyOption.REPLACE_EXISTING);
        
        // 替換數(shù)據(jù)庫文件
        Files.copy(mmdbFile.toPath(), originalFile.toPath(), 
                  StandardCopyOption.REPLACE_EXISTING);
        
        // 清理臨時文件
        cleanTempFiles(tempFile, extractedDir);
        
        log.info("MaxMind database updated successfully");
    }
    
    private void updateIp2RegionDatabase() throws IOException {
        String downloadUrl = "https://github.com/lionsoul2014/ip2region/raw/master/data/ip2region.xdb";
        
        // 下載數(shù)據(jù)庫文件
        File tempFile = downloadFile(downloadUrl);
        
        // 備份原文件
        File originalFile = new File(properties.getOffline().getIp2regionDbPath()
                                    .replace("classpath:", ""));
        File backupFile = new File(originalFile.getParent(), 
                                  originalFile.getName() + ".bak");
        
        Files.copy(originalFile.toPath(), backupFile.toPath(), 
                  StandardCopyOption.REPLACE_EXISTING);
        
        // 替換數(shù)據(jù)庫文件
        Files.copy(tempFile.toPath(), originalFile.toPath(), 
                  StandardCopyOption.REPLACE_EXISTING);
        
        // 清理臨時文件
        tempFile.delete();
        
        log.info("ip2region database updated successfully");
    }
    
    private File downloadFile(String url) throws IOException {
        RestTemplate restTemplate = new RestTemplate();
        
        ResponseEntity<byte[]> response = restTemplate.exchange(
            url, HttpMethod.GET, null, byte[].class);
        
        File tempFile = File.createTempFile("geoip", ".tmp");
        Files.write(tempFile.toPath(), response.getBody());
        
        return tempFile;
    }
    
    private File extractTarGz(File tarGzFile) throws IOException {
        File outputDir = new File(tarGzFile.getParent(), "extracted");
        
        try (TarArchiveInputStream tarInput = new TarArchiveInputStream(
                new GZIPInputStream(new FileInputStream(tarGzFile)))) {
            
            TarArchiveEntry entry;
            while ((entry = tarInput.getNextEntry()) != null) {
                File outputFile = new File(outputDir, entry.getName());
                
                if (entry.isDirectory()) {
                    outputFile.mkdirs();
                } else {
                    outputFile.getParentFile().mkdirs();
                    
                    try (FileOutputStream fos = new FileOutputStream(outputFile)) {
                        IOUtils.copy(tarInput, fos);
                    }
                }
            }
        }
        
        return outputDir;
    }
    
    private File findMmdbFile(File directory) {
        File[] files = directory.listFiles((dir, name) -> 
                                          name.endsWith(".mmdb"));
        
        if (files != null && files.length > 0) {
            return files[0];
        }
        
        // 遞歸查找子目錄
        File[] subdirs = directory.listFiles(File::isDirectory);
        if (subdirs != null) {
            for (File subdir : subdirs) {
                File mmdbFile = findMmdbFile(subdir);
                if (mmdbFile != null) {
                    return mmdbFile;
                }
            }
        }
        
        return null;
    }
    
    private void cleanTempFiles(File tempFile, File extractedDir) {
        try {
            tempFile.delete();
            deleteDirectory(extractedDir);
        } catch (Exception e) {
            log.warn("Failed to clean temp files", e);
        }
    }
    
    private void deleteDirectory(File directory) throws IOException {
        if (directory.exists()) {
            File[] files = directory.listFiles();
            if (files != null) {
                for (File file : files) {
                    if (file.isDirectory()) {
                        deleteDirectory(file);
                    } else {
                        file.delete();
                    }
                }
            }
            directory.delete();
        }
    }
}

/**
 * 數(shù)據(jù)庫更新事件
 */
public class DatabaseUpdateEvent extends ApplicationEvent {
    
    private final boolean success;
    private final Date timestamp;
    
    public DatabaseUpdateEvent(Object source, boolean success) {
        super(source);
        this.success = success;
        this.timestamp = new Date();
    }
    
    public boolean isSuccess() {
        return success;
    }
    
    public Date getTimestamp() {
        return timestamp;
    }
}

@Component
@Slf4j
public class IpRateLimiter {
    
    private final Cache<String, RateLimitInfo> rateLimitCache;
    private final List<String> excludedIps;
    
    public IpRateLimiter() {
        this.rateLimitCache = Caffeine.newBuilder()
            .maximumSize(100000)
            .expireAfterWrite(1, TimeUnit.HOURS)
            .build();
        
        // 從配置文件加載排除的IP列表
        this.excludedIps = loadExcludedIps();
    }
    
    /**
     * 檢查IP是否超過頻率限制
     */
    public boolean isRateLimited(String ip, String endpoint) {
        // 排除的IP不受限制
        if (excludedIps.contains(ip)) {
            return false;
        }
        
        String key = ip + ":" + endpoint;
        RateLimitInfo info = rateLimitCache.getIfPresent(key);
        
        if (info == null) {
            info = new RateLimitInfo();
            rateLimitCache.put(key, info);
        }
        
        return info.isRateLimited();
    }
    
    /**
     * 記錄IP訪問
     */
    public void recordAccess(String ip, String endpoint) {
        String key = ip + ":" + endpoint;
        RateLimitInfo info = rateLimitCache.getIfPresent(key);
        
        if (info == null) {
            info = new RateLimitInfo();
        }
        
        info.recordAccess();
        rateLimitCache.put(key, info);
    }
    
    /**
     * 獲取IP的訪問統(tǒng)計
     */
    public RateLimitInfo getRateLimitInfo(String ip, String endpoint) {
        String key = ip + ":" + endpoint;
        return rateLimitCache.getIfPresent(key);
    }
    
    /**
     * 清除IP的限制
     */
    public void clearRateLimit(String ip, String endpoint) {
        String key = ip + ":" + endpoint;
        rateLimitCache.invalidate(key);
    }
    
    private List<String> loadExcludedIps() {
        // 從配置文件或數(shù)據(jù)庫加載
        return Arrays.asList(
            "127.0.0.1",
            "192.168.1.1",
            "10.0.0.1"
        );
    }
    
    /**
     * 速率限制信息
     */
    @Data
    public static class RateLimitInfo {
        private static final int MAX_REQUESTS_PER_MINUTE = 100;
        private static final int MAX_REQUESTS_PER_HOUR = 1000;
        
        private List<Long> accessTimes = new ArrayList<>();
        
        public void recordAccess() {
            long now = System.currentTimeMillis();
            accessTimes.add(now);
            
            // 清理過期的記錄
            long oneMinuteAgo = now - 60000;
            long oneHourAgo = now - 3600000;
            
            accessTimes.removeIf(time -> time < oneHourAgo);
        }
        
        public boolean isRateLimited() {
            long now = System.currentTimeMillis();
            long oneMinuteAgo = now - 60000;
            long oneHourAgo = now - 3600000;
            
            long minuteCount = accessTimes.stream()
                .filter(time -> time > oneMinuteAgo)
                .count();
            
            long hourCount = accessTimes.stream()
                .filter(time -> time > oneHourAgo)
                .count();
            
            return minuteCount > MAX_REQUESTS_PER_MINUTE || 
                   hourCount > MAX_REQUESTS_PER_HOUR;
        }
        
        public Map<String, Object> getStats() {
            long now = System.currentTimeMillis();
            long oneMinuteAgo = now - 60000;
            long oneHourAgo = now - 3600000;
            
            long minuteCount = accessTimes.stream()
                .filter(time -> time > oneMinuteAgo)
                .count();
            
            long hourCount = accessTimes.stream()
                .filter(time -> time > oneHourAgo)
                .count();
            
            Map<String, Object> stats = new HashMap<>();
            stats.put("minuteCount", minuteCount);
            stats.put("hourCount", hourCount);
            stats.put("minuteLimit", MAX_REQUESTS_PER_MINUTE);
            stats.put("hourLimit", MAX_REQUESTS_PER_HOUR);
            stats.put("isRateLimited", isRateLimited());
            
            return stats;
        }
    }
}

@RestController
@RequestMapping("/api/v1/visualization")
@Tag(name = "IP可視化", description = "IP地理位置可視化API")
public class IpVisualizationController {
    
    private final GeoIpManager geoIpManager;
    private final IpAccessRepository ipAccessRepository;
    
    @Autowired
    public IpVisualizationController(GeoIpManager geoIpManager,
                                    IpAccessRepository ipAccessRepository) {
        this.geoIpManager = geoIpManager;
        this.ipAccessRepository = ipAccessRepository;
    }
    
    /**
     * 生成訪問熱力圖數(shù)據(jù)
     */
    @GetMapping("/heatmap")
    @Operation(summary = "訪問熱力圖", 
               description = "生成IP訪問熱力圖數(shù)據(jù)")
    public ResponseEntity<ApiResponse<HeatMapData>> getHeatMapData(
            @RequestParam(required = false) Date startTime,
            @RequestParam(required = false) Date endTime) {
        
        if (startTime == null) {
            startTime = Date.from(Instant.now().minus(7, ChronoUnit.DAYS));
        }
        
        if (endTime == null) {
            endTime = new Date();
        }
        
        // 查詢訪問記錄
        List<IpAccessRecord> records = ipAccessRepository
            .findByAccessTimeBetween(startTime, endTime);
        
        // 按地理位置聚合
        Map<String, Integer> locationCount = new HashMap<>();
        
        for (IpAccessRecord record : records) {
            String locationKey = record.getCountry() + "|" + record.getCity();
            locationCount.put(locationKey, 
                locationCount.getOrDefault(locationKey, 0) + 1);
        }
        
        // 生成熱力圖數(shù)據(jù)
        List<HeatMapPoint> points = locationCount.entrySet().stream()
            .map(entry -> {
                String[] parts = entry.getKey().split("\\|");
                GeoLocation sampleLocation = geoIpManager.query(
                    records.stream()
                        .filter(r -> r.getCountry().equals(parts[0]) && 
                                    r.getCity().equals(parts[1]))
                        .findFirst()
                        .map(IpAccessRecord::getIp)
                        .orElse("8.8.8.8")
                );
                
                return HeatMapPoint.builder()
                    .country(parts[0])
                    .city(parts[1])
                    .count(entry.getValue())
                    .latitude(sampleLocation.getLatitude())
                    .longitude(sampleLocation.getLongitude())
                    .build();
            })
            .collect(Collectors.toList());
        
        HeatMapData data = HeatMapData.builder()
            .startTime(startTime)
            .endTime(endTime)
            .totalAccesses(records.size())
            .uniqueLocations(locationCount.size())
            .points(points)
            .build();
        
        return ResponseEntity.ok(ApiResponse.success(data));
    }
    
    /**
     * 生成訪問統(tǒng)計圖表數(shù)據(jù)
     */
    @GetMapping("/statistics")
    @Operation(summary = "訪問統(tǒng)計", 
               description = "生成IP訪問統(tǒng)計圖表數(shù)據(jù)")
    public ResponseEntity<ApiResponse<AccessStatistics>> getAccessStatistics(
            @RequestParam(required = false) @Pattern(regexp = "day|week|month|year") 
            String period) {
        
        if (period == null) {
            period = "week";
        }
        
        Date endTime = new Date();
        Date startTime;
        
        switch (period) {
            case "day":
                startTime = Date.from(Instant.now().minus(1, ChronoUnit.DAYS));
                break;
            case "week":
                startTime = Date.from(Instant.now().minus(7, ChronoUnit.DAYS));
                break;
            case "month":
                startTime = Date.from(Instant.now().minus(30, ChronoUnit.DAYS));
                break;
            case "year":
                startTime = Date.from(Instant.now().minus(365, ChronoUnit.DAYS));
                break;
            default:
                startTime = Date.from(Instant.now().minus(7, ChronoUnit.DAYS));
        }
        
        List<IpAccessRecord> records = ipAccessRepository
            .findByAccessTimeBetween(startTime, endTime);
        
        // 按時間分組統(tǒng)計
        Map<String, Long> timeSeries = createTimeSeries(records, period);
        
        // 按國家分組統(tǒng)計
        Map<String, Long> countryStats = records.stream()
            .collect(Collectors.groupingBy(
                IpAccessRecord::getCountry,
                Collectors.counting()
            ));
        
        // 按城市分組統(tǒng)計
        Map<String, Long> cityStats = records.stream()
            .collect(Collectors.groupingBy(
                record -> record.getCountry() + " - " + record.getCity(),
                Collectors.counting()
            ));
        
        AccessStatistics statistics = AccessStatistics.builder()
            .period(period)
            .startTime(startTime)
            .endTime(endTime)
            .totalAccesses(records.size())
            .uniqueIps(records.stream().map(IpAccessRecord::getIp).distinct().count())
            .timeSeries(timeSeries)
            .countryStats(countryStats)
            .cityStats(cityStats)
            .build();
        
        return ResponseEntity.ok(ApiResponse.success(statistics));
    }
    
    private Map<String, Long> createTimeSeries(List<IpAccessRecord> records, 
                                              String period) {
        DateTimeFormatter formatter;
        
        switch (period) {
            case "day":
                formatter = DateTimeFormatter.ofPattern("HH:00");
                break;
            case "week":
                formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
                break;
            case "month":
                formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
                break;
            case "year":
                formatter = DateTimeFormatter.ofPattern("yyyy-MM");
                break;
            default:
                formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        }
        
        return records.stream()
            .collect(Collectors.groupingBy(
                record -> record.getAccessTime().toInstant()
                    .atZone(ZoneId.systemDefault())
                    .format(formatter),
                Collectors.counting()
            ));
    }
    
    @Data
    @Builder
    public static class HeatMapData {
        private Date startTime;
        private Date endTime;
        private long totalAccesses;
        private int uniqueLocations;
        private List<HeatMapPoint> points;
    }
    
    @Data
    @Builder
    public static class HeatMapPoint {
        private String country;
        private String city;
        private int count;
        private Double latitude;
        private Double longitude;
    }
    
    @Data
    @Builder
    public static class AccessStatistics {
        private String period;
        private Date startTime;
        private Date endTime;
        private long totalAccesses;
        private long uniqueIps;
        private Map<String, Long> timeSeries;
        private Map<String, Long> countryStats;
        private Map<String, Long> cityStats;
    }
}

@Component
@Slf4j
public class MultiLevelCache {
    
    private final Cache<String, GeoLocation> localCache;
    private final RedisTemplate<String, GeoLocation> redisTemplate;
    private final boolean useRedis;
    
    public MultiLevelCache(RedisTemplate<String, GeoLocation> redisTemplate,
                          GeoIpProperties properties) {
        
        // 一級緩存：本地緩存
        this.localCache = Caffeine.newBuilder()
            .maximumSize(properties.getCache().getMaximumSize())
            .expireAfterWrite(properties.getCache().getLocalTtl(), 
                            TimeUnit.SECONDS)
            .recordStats()
            .build();
        
        // 二級緩存：Redis
        this.redisTemplate = redisTemplate;
        this.useRedis = redisTemplate != null;
    }
    
    /**
     * 從緩存獲取數(shù)據(jù)
     */
    public GeoLocation get(String ip) {
        // 先查本地緩存
        GeoLocation location = localCache.getIfPresent(ip);
        
        if (location != null) {
            log.debug("Cache hit from local cache for IP: {}", ip);
            return location;
        }
        
        // 本地緩存未命中，查詢Redis
        if (useRedis) {
            location = redisTemplate.opsForValue().get(buildRedisKey(ip));
            
            if (location != null) {
                log.debug("Cache hit from Redis for IP: {}", ip);
                // 回填到本地緩存
                localCache.put(ip, location);
                return location;
            }
        }
        
        log.debug("Cache miss for IP: {}", ip);
        return null;
    }
    
    /**
     * 寫入緩存
     */
    public void put(String ip, GeoLocation location) {
        if (location == null) {
            return;
        }
        
        // 寫入本地緩存
        localCache.put(ip, location);
        
        // 寫入Redis
        if (useRedis) {
            try {
                redisTemplate.opsForValue().set(
                    buildRedisKey(ip), 
                    location, 
                    1, TimeUnit.HOURS  // Redis緩存1小時
                );
                log.debug("Data cached in Redis for IP: {}", ip);
            } catch (Exception e) {
                log.warn("Failed to cache data in Redis for IP: {}", ip, e);
            }
        }
    }
    
    /**
     * 批量獲取
     */
    public Map<String, GeoLocation> batchGet(List<String> ips) {
        Map<String, GeoLocation> results = new HashMap<>();
        List<String> missingKeys = new ArrayList<>();
        
        // 先查本地緩存
        for (String ip : ips) {
            GeoLocation location = localCache.getIfPresent(ip);
            if (location != null) {
                results.put(ip, location);
            } else {
                missingKeys.add(ip);
            }
        }
        
        // 如果還有未命中的，批量查詢Redis
        if (useRedis && !missingKeys.isEmpty()) {
            List<String> redisKeys = missingKeys.stream()
                .map(this::buildRedisKey)
                .collect(Collectors.toList());
            
            List<GeoLocation> redisResults = redisTemplate.opsForValue()
                .multiGet(redisKeys);
            
            for (int i = 0; i < missingKeys.size(); i++) {
                String ip = missingKeys.get(i);
                GeoLocation location = redisResults.get(i);
                
                if (location != null) {
                    results.put(ip, location);
                    // 回填到本地緩存
                    localCache.put(ip, location);
                }
            }
        }
        
        return results;
    }
    
    /**
     * 批量寫入
     */
    public void batchPut(Map<String, GeoLocation> data) {
        if (data == null || data.isEmpty()) {
            return;
        }
        
        // 寫入本地緩存
        data.forEach(localCache::put);
        
        // 批量寫入Redis
        if (useRedis) {
            try {
                Map<String, GeoLocation> redisData = data.entrySet().stream()
                    .collect(Collectors.toMap(
                        entry -> buildRedisKey(entry.getKey()),
                        Map.Entry::getValue
                    ));
                
                redisTemplate.opsForValue().multiSet(redisData);
                
                // 設(shè)置過期時間
                for (String key : redisData.keySet()) {
                    redisTemplate.expire(key, 1, TimeUnit.HOURS);
                }
                
                log.debug("Batch cached {} items in Redis", data.size());
            } catch (Exception e) {
                log.warn("Failed to batch cache data in Redis", e);
            }
        }
    }
    
    /**
     * 刪除緩存
     */
    public void evict(String ip) {
        localCache.invalidate(ip);
        
        if (useRedis) {
            redisTemplate.delete(buildRedisKey(ip));
        }
    }
    
    /**
     * 清空所有緩存
     */
    public void clear() {
        localCache.invalidateAll();
        
        if (useRedis) {
            // 注意：這會清空所有緩存，生產(chǎn)環(huán)境慎用
            Set<String> keys = redisTemplate.keys("geoip:*");
            if (keys != null && !keys.isEmpty()) {
                redisTemplate.delete(keys);
            }
        }
    }
    
    /**
     * 獲取緩存統(tǒng)計信息
     */
    public CacheStats getStats() {
        return localCache.stats();
    }
    
    private String buildRedisKey(String ip) {
        return "geoip:" + ip;
    }
}

@Component
@Slf4j
public class AsyncGeoIpService {
    
    private final GeoIpManager geoIpManager;
    private final ExecutorService executorService;
    private final CompletionService<GeoLocation> completionService;
    
    public AsyncGeoIpService(GeoIpManager geoIpManager) {
        this.geoIpManager = geoIpManager;
        
        // 創(chuàng)建線程池
        this.executorService = Executors.newFixedThreadPool(
            Runtime.getRuntime().availableProcessors() * 2,
            new ThreadFactoryBuilder()
                .setNameFormat("geoip-async-%d")
                .setDaemon(true)
                .build()
        );
        
        this.completionService = new ExecutorCompletionService<>(executorService);
    }
    
    /**
     * 異步查詢單個IP
     */
    public CompletableFuture<GeoLocation> queryAsync(String ip) {
        return CompletableFuture.supplyAsync(() -> geoIpManager.query(ip), 
                                           executorService);
    }
    
    /**
     * 異步批量查詢
     */
    public CompletableFuture<Map<String, GeoLocation>> batchQueryAsync(
            List<String> ips) {
        
        return CompletableFuture.supplyAsync(() -> {
            Map<String, GeoLocation> results = new ConcurrentHashMap<>();
            List<Future<GeoLocation>> futures = new ArrayList<>();
            
            // 提交所有查詢?nèi)蝿?wù)
            for (String ip : ips) {
                futures.add(completionService.submit(() -> geoIpManager.query(ip)));
            }
            
            // 等待所有任務(wù)完成
            for (int i = 0; i < futures.size(); i++) {
                try {
                    Future<GeoLocation> future = completionService.take();
                    GeoLocation location = future.get();
                    
                    // 根據(jù)IP地址找到對應(yīng)的結(jié)果
                    // 這里需要維護IP和任務(wù)的映射關(guān)系
                    // 簡化處理：在任務(wù)提交時記錄IP
                    
                } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                    log.error("Batch query interrupted", e);
                } catch (ExecutionException e) {
                    log.error("Error executing query task", e);
                }
            }
            
            return results;
        }, executorService);
    }
    
    /**
     * 帶超時的查詢
     */
    public GeoLocation queryWithTimeout(String ip, long timeout, TimeUnit unit) {
        CompletableFuture<GeoLocation> future = queryAsync(ip);
        
        try {
            return future.get(timeout, unit);
        } catch (TimeoutException e) {
            future.cancel(true);
            throw new GeoIpException("Query timeout for IP: " + ip);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            throw new GeoIpException("Query interrupted", e);
        } catch (ExecutionException e) {
            throw new GeoIpException("Query failed", e);
        }
    }
    
    /**
     * 關(guān)閉線程池
     */
    @PreDestroy
    public void shutdown() {
        executorService.shutdown();
        
        try {
            if (!executorService.awaitTermination(60, TimeUnit.SECONDS)) {
                executorService.shutdownNow();
            }
        } catch (InterruptedException e) {
            executorService.shutdownNow();
            Thread.currentThread().interrupt();
        }
    }
}

@Component
@Slf4j
public class IpFilter {
    
    private final Set<String> blacklist = new ConcurrentHashSet<>();
    private final Set<String> whitelist = new ConcurrentHashSet<>();
    private final List<CIDR> blacklistCidrs = new ArrayList<>();
    private final List<CIDR> whitelistCidrs = new ArrayList<>();
    
    @PostConstruct
    public void init() {
        loadBlacklist();
        loadWhitelist();
    }
    
    /**
     * 檢查IP是否被禁止
     */
    public boolean isBlocked(String ip) {
        // 檢查白名單（白名單優(yōu)先）
        if (isWhitelisted(ip)) {
            return false;
        }
        
        // 檢查黑名單
        return isBlacklisted(ip);
    }
    
    /**
     * 檢查IP是否在黑名單中
     */
    public boolean isBlacklisted(String ip) {
        // 檢查精確IP
        if (blacklist.contains(ip)) {
            return true;
        }
        
        // 檢查CIDR范圍
        for (CIDR cidr : blacklistCidrs) {
            if (cidr.contains(ip)) {
                return true;
            }
        }
        
        return false;
    }
    
    /**
     * 檢查IP是否在白名單中
     */
    public boolean isWhitelisted(String ip) {
        // 檢查精確IP
        if (whitelist.contains(ip)) {
            return true;
        }
        
        // 檢查CIDR范圍
        for (CIDR cidr : whitelistCidrs) {
            if (cidr.contains(ip)) {
                return true;
            }
        }
        
        return false;
    }
    
    /**
     * 添加IP到黑名單
     */
    public void addToBlacklist(String ipOrCidr) {
        if (ipOrCidr.contains("/")) {
            blacklistCidrs.add(new CIDR(ipOrCidr));
        } else {
            blacklist.add(ipOrCidr);
        }
        
        log.info("Added to blacklist: {}", ipOrCidr);
    }
    
    /**
     * 添加IP到白名單
     */
    public void addToWhitelist(String ipOrCidr) {
        if (ipOrCidr.contains("/")) {
            whitelistCidrs.add(new CIDR(ipOrCidr));
        } else {
            whitelist.add(ipOrCidr);
        }
        
        log.info("Added to whitelist: {}", ipOrCidr);
    }
    
    /**
     * 從黑名單移除
     */
    public void removeFromBlacklist(String ipOrCidr) {
        if (ipOrCidr.contains("/")) {
            blacklistCidrs.removeIf(cidr -> cidr.toString().equals(ipOrCidr));
        } else {
            blacklist.remove(ipOrCidr);
        }
        
        log.info("Removed from blacklist: {}", ipOrCidr);
    }
    
    /**
     * 從白名單移除
     */
    public void removeFromWhitelist(String ipOrCidr) {
        if (ipOrCidr.contains("/")) {
            whitelistCidrs.removeIf(cidr -> cidr.toString().equals(ipOrCidr));
        } else {
            whitelist.remove(ipOrCidr);
        }
        
        log.info("Removed from whitelist: {}", ipOrCidr);
    }
    
    /**
     * 獲取黑名單列表
     */
    public Set<String> getBlacklist() {
        Set<String> all = new HashSet<>(blacklist);
        blacklistCidrs.forEach(cidr -> all.add(cidr.toString()));
        return all;
    }
    
    /**
     * 獲取白名單列表
     */
    public Set<String> getWhitelist() {
        Set<String> all = new HashSet<>(whitelist);
        whitelistCidrs.forEach(cidr -> all.add(cidr.toString()));
        return all;
    }
    
    private void loadBlacklist() {
        // 從配置文件或數(shù)據(jù)庫加載
        // 這里添加示例數(shù)據(jù)
        blacklist.add("192.168.1.100");
        blacklist.add("10.0.0.100");
        blacklistCidrs.add(new CIDR("192.168.2.0/24"));
    }
    
    private void loadWhitelist() {
        // 從配置文件或數(shù)據(jù)庫加載
        // 這里添加示例數(shù)據(jù)
        whitelist.add("127.0.0.1");
        whitelist.add("192.168.1.1");
        whitelistCidrs.add(new CIDR("10.1.0.0/16"));
    }
    
    /**
     * CIDR表示法類
     */
    @Data
    public static class CIDR {
        private final String cidr;
        private final long startIp;
        private final long endIp;
        
        public CIDR(String cidr) {
            this.cidr = cidr;
            long[] range = CidrUtils.cidrToRange(cidr);
            this.startIp = range[0];
            this.endIp = range[1];
        }
        
        public boolean contains(String ip) {
            long ipLong = IpAddressUtils.ipToLong(ip);
            return ipLong >= startIp && ipLong <= endIp;
        }
        
        @Override
        public String toString() {
            return cidr;
        }
    }
}

@Component
@Slf4j
public class GeoIpMonitor {
    
    private final MeterRegistry meterRegistry;
    private final List<GeoIpProvider> providers;
    private final Map<String, ProviderStats> providerStats = new ConcurrentHashMap<>();
    private final Map<String, SlidingWindow> errorRates = new ConcurrentHashMap<>();
    
    @Autowired
    public GeoIpMonitor(MeterRegistry meterRegistry, 
                       List<GeoIpProvider> providers) {
        this.meterRegistry = meterRegistry;
        this.providers = providers;
        
        initMetrics();
        startMonitoring();
    }
    
    private void initMetrics() {
        // 注冊Micrometer指標(biāo)
        meterRegistry.gauge("geoip.cache.size", this, 
                           m -> m.getCacheStats().map(CacheStats::estimatedSize).orElse(0L));
        
        meterRegistry.gauge("geoip.provider.count", providers, List::size);
        
        // 為每個提供商創(chuàng)建指標(biāo)
        providers.forEach(provider -> {
            String name = provider.getName();
            
            Counter.builder("geoip.query.requests")
                .tag("provider", name)
                .register(meterRegistry);
            
            Counter.builder("geoip.query.errors")
                .tag("provider", name)
                .register(meterRegistry);
            
            Timer.builder("geoip.query.duration")
                .tag("provider", name)
                .register(meterRegistry);
        });
    }
    
    private void startMonitoring() {
        // 定期收集統(tǒng)計信息
        ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor();
        
        scheduler.scheduleAtFixedRate(() -> {
            try {
                collectStats();
                checkHealth();
            } catch (Exception e) {
                log.error("Error in monitoring task", e);
            }
        }, 1, 1, TimeUnit.MINUTES);
    }
    
    private void collectStats() {
        providers.forEach(provider -> {
            String name = provider.getName();
            ProviderStats stats = providerStats.computeIfAbsent(name, 
                k -> new ProviderStats());
            
            // 這里可以收集實際的使用統(tǒng)計
            // 例如：成功次數(shù)、失敗次數(shù)、平均響應(yīng)時間等
        });
    }
    
    private void checkHealth() {
        providers.forEach(provider -> {
            String name = provider.getName();
            SlidingWindow window = errorRates.computeIfAbsent(name, 
                k -> new SlidingWindow(100));
            
            // 檢查錯誤率
            double errorRate = window.getErrorRate();
            
            if (errorRate > 0.1) { // 錯誤率超過10%
                log.warn("High error rate detected for provider {}: {}%", 
                        name, errorRate * 100);
                
                // 發(fā)送告警
                sendAlert(name, "High error rate: " + (errorRate * 100) + "%");
            }
        });
    }
    
    /**
     * 記錄查詢成功
     */
    public void recordSuccess(String provider, long duration) {
        meterRegistry.counter("geoip.query.requests", 
                            "provider", provider).increment();
        
        meterRegistry.timer("geoip.query.duration", 
                          "provider", provider).record(duration, TimeUnit.MILLISECONDS);
        
        // 更新滑動窗口
        SlidingWindow window = errorRates.computeIfAbsent(provider, 
            k -> new SlidingWindow(100));
        window.recordSuccess();
    }
    
    /**
     * 記錄查詢失敗
     */
    public void recordError(String provider) {
        meterRegistry.counter("geoip.query.errors", 
                            "provider", provider).increment();
        
        // 更新滑動窗口
        SlidingWindow window = errorRates.computeIfAbsent(provider, 
            k -> new SlidingWindow(100));
        window.recordError();
    }
    
    /**
     * 發(fā)送告警
     */
    private void sendAlert(String provider, String message) {
        // 實現(xiàn)告警邏輯
        // 可以發(fā)送郵件、短信、釘釘、企業(yè)微信等
        log.error("ALERT: Provider {} - {}", provider, message);
    }
    
    /**
     * 獲取緩存統(tǒng)計
     */
    public Optional<CacheStats> getCacheStats() {
        // 從緩存組件獲取統(tǒng)計
        return Optional.empty();
    }
    
    /**
     * 獲取提供商統(tǒng)計信息
     */
    public Map<String, ProviderStats> getProviderStats() {
        return new HashMap<>(providerStats);
    }
    
    /**
     * 提供商統(tǒng)計
     */
    @Data
    public static class ProviderStats {
        private long totalQueries;
        private long successfulQueries;
        private long failedQueries;
        private double averageResponseTime;
        private double errorRate;
        private Date lastQueryTime;
        private Date lastErrorTime;
    }
    
    /**
     * 滑動窗口統(tǒng)計
     */
    public static class SlidingWindow {
        private final int size;
        private final Deque<Boolean> window;
        
        public SlidingWindow(int size) {
            this.size = size;
            this.window = new ArrayDeque<>(size);
        }
        
        public synchronized void recordSuccess() {
            window.addLast(true);
            if (window.size() > size) {
                window.removeFirst();
            }
        }
        
        public synchronized void recordError() {
            window.addLast(false);
            if (window.size() > size) {
                window.removeFirst();
            }
        }
        
        public synchronized double getErrorRate() {
            if (window.isEmpty()) {
                return 0.0;
            }
            
            long errors = window.stream().filter(success -> !success).count();
            return (double) errors / window.size();
        }
        
        public synchronized int getWindowSize() {
            return window.size();
        }
    }
}

@SpringBootTest
@ExtendWith(MockitoExtension.class)
class GeoIpServiceTest {
    
    @Mock
    private DatabaseReader databaseReader;
    
    @Mock
    private RestTemplate restTemplate;
    
    @InjectMocks
    private MaxmindGeoIpService geoIpService;
    
    @Test
    void testValidIpQuery() throws Exception {
        // 準(zhǔn)備測試數(shù)據(jù)
        String testIp = "8.8.8.8";
        InetAddress ipAddress = InetAddress.getByName(testIp);
        
        CityResponse mockResponse = Mockito.mock(CityResponse.class);
        Country country = new Country(Arrays.asList("United States"), 6252001, "US", null);
        Subdivision subdivision = new Subdivision(Arrays.asList("California"), 5332921, "CA", null);
        City city = new City(Arrays.asList("Mountain View"), 5375480, null);
        Location location = new Location(37.386, -122.0838, 0, null, null, "America/Los_Angeles");
        Postal postal = new Postal("94040", 0);
        
        when(databaseReader.city(ipAddress)).thenReturn(mockResponse);
        when(mockResponse.getCountry()).thenReturn(country);
        when(mockResponse.getMostSpecificSubdivision()).thenReturn(subdivision);
        when(mockResponse.getCity()).thenReturn(city);
        when(mockResponse.getLocation()).thenReturn(location);
        when(mockResponse.getPostal()).thenReturn(postal);
        
        // 執(zhí)行測試
        GeoLocation result = geoIpService.query(testIp);
        
        // 驗證結(jié)果
        assertNotNull(result);
        assertEquals("United States", result.getCountry());
        assertEquals("US", result.getCountryCode());
        assertEquals("California", result.getRegion());
        assertEquals("Mountain View", result.getCity());
        assertEquals("94040", result.getPostalCode());
        assertEquals(37.386, result.getLatitude(), 0.001);
        assertEquals(-122.0838, result.getLongitude(), 0.001);
        assertEquals("America/Los_Angeles", result.getTimeZone());
        assertEquals("MaxMind", result.getSource());
    }
    
    @Test
    void testInvalidIp() {
        String invalidIp = "999.999.999.999";
        
        assertThrows(IllegalArgumentException.class, () -> {
            GeoLocation result = geoIpService.query(invalidIp);
        });
    }
    
    @Test
    void testInternalIp() {
        String internalIp = "192.168.1.1";
        
        GeoLocation result = geoIpService.query(internalIp);
        
        assertNotNull(result);
        assertEquals("Internal", result.getCountry());
        assertTrue(result.getInternal());
    }
}

@WebMvcTest(IpGeoController.class)
class IpGeoControllerTest {
    
    @Autowired
    private MockMvc mockMvc;
    
    @MockBean
    private GeoIpManager geoIpManager;
    
    @MockBean
    private IpAddressUtils ipAddressUtils;
    
    @Test
    void testQueryIp() throws Exception {
        String testIp = "8.8.8.8";
        GeoLocation mockLocation = GeoLocation.builder()
            .ip(testIp)
            .country("United States")
            .countryCode("US")
            .city("Mountain View")
            .latitude(37.386)
            .longitude(-122.0838)
            .source("MaxMind")
            .timestamp(System.currentTimeMillis())
            .build();
        
        when(geoIpManager.query(testIp)).thenReturn(mockLocation);
        
        mockMvc.perform(get("/api/v1/ip/query")
                .param("ip", testIp))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$.success").value(true))
                .andExpect(jsonPath("$.data.country").value("United States"))
                .andExpect(jsonPath("$.data.city").value("Mountain View"));
    }
    
    @Test
    void testBatchQuery() throws Exception {
        List<String> ips = Arrays.asList("8.8.8.8", "1.1.1.1");
        Map<String, GeoLocation> mockResults = new HashMap<>();
        
        mockResults.put("8.8.8.8", GeoLocation.builder()
            .ip("8.8.8.8")
            .country("United States")
            .build());
        
        mockResults.put("1.1.1.1", GeoLocation.builder()
            .ip("1.1.1.1")
            .country("Australia")
            .build());
        
        when(geoIpManager.batchQuery(anyList())).thenReturn(mockResults);
        
        String requestBody = "{\"ips\": [\"8.8.8.8\", \"1.1.1.1\"]}";
        
        mockMvc.perform(post("/api/v1/ip/batch-query")
                .contentType(MediaType.APPLICATION_JSON)
                .content(requestBody))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$.success").value(true))
                .andExpect(jsonPath("$.data['8.8.8.8'].country").value("United States"))
                .andExpect(jsonPath("$.data['1.1.1.1'].country").value("Australia"));
    }
}

@SpringBootTest
@AutoConfigureMockMvc
@TestPropertySource(properties = {
    "ip.geolocation.mode=hybrid",
    "ip.geolocation.cache.enabled=true"
})
class GeoIpPerformanceTest {
    
    @Autowired
    private MockMvc mockMvc;
    
    @Autowired
    private GeoIpManager geoIpManager;
    
    @Test
    void testQueryPerformance() {
        // 生成測試IP列表
        List<String> testIps = generateTestIps(1000);
        
        long startTime = System.currentTimeMillis();
        
        // 執(zhí)行批量查詢
        Map<String, GeoLocation> results = geoIpManager.batchQuery(testIps);
        
        long endTime = System.currentTimeMillis();
        long duration = endTime - startTime;
        
        System.out.println("Batch query of " + testIps.size() + " IPs took " + duration + "ms");
        System.out.println("Average time per query: " + (double) duration / testIps.size() + "ms");
        
        // 驗證性能要求
        assertTrue(duration < 5000, "Batch query should complete within 5 seconds");
    }
    
    @Test
    void testCachePerformance() {
        String testIp = "8.8.8.8";
        
        // 第一次查詢（緩存未命中）
        long startTime1 = System.currentTimeMillis();
        GeoLocation result1 = geoIpManager.query(testIp);
        long duration1 = System.currentTimeMillis() - startTime1;
        
        // 第二次查詢（緩存命中）
        long startTime2 = System.currentTimeMillis();
        GeoLocation result2 = geoIpManager.query(testIp);
        long duration2 = System.currentTimeMillis() - startTime2;
        
        System.out.println("First query (cache miss): " + duration1 + "ms");
        System.out.println("Second query (cache hit): " + duration2 + "ms");
        
        // 驗證緩存命中率提升
        assertTrue(duration2 < duration1, "Cached query should be faster");
        assertTrue(duration2 < 10, "Cached query should be very fast (<10ms)");
    }
    
    @Test
    void testConcurrentPerformance() throws InterruptedException {
        int threadCount = 10;
        int queriesPerThread = 100;
        ExecutorService executor = Executors.newFixedThreadPool(threadCount);
        List<Future<Long>> futures = new ArrayList<>();
        
        // 提交并發(fā)任務(wù)
        for (int i = 0; i < threadCount; i++) {
            futures.add(executor.submit(() -> {
                long totalTime = 0;
                List<String> ips = generateTestIps(queriesPerThread);
                
                for (String ip : ips) {
                    long startTime = System.currentTimeMillis();
                    geoIpManager.query(ip);
                    totalTime += System.currentTimeMillis() - startTime;
                }
                
                return totalTime;
            }));
        }
        
        // 等待所有任務(wù)完成
        long totalQueryTime = 0;
        for (Future<Long> future : futures) {
            try {
                totalQueryTime += future.get();
            } catch (ExecutionException e) {
                fail("Test execution failed: " + e.getMessage());
            }
        }
        
        executor.shutdown();
        
        long totalQueries = threadCount * queriesPerThread;
        double avgTimePerQuery = (double) totalQueryTime / totalQueries;
        
        System.out.println("Concurrent test: " + totalQueries + " queries");
        System.out.println("Average time per query: " + avgTimePerQuery + "ms");
        
        // 驗證并發(fā)性能
        assertTrue(avgTimePerQuery < 100, "Average query time should be <100ms under concurrent load");
    }
    
    private List<String> generateTestIps(int count) {
        List<String> ips = new ArrayList<>();
        Random random = new Random();
        
        for (int i = 0; i < count; i++) {
            String ip = random.nextInt(256) + "." +
                       random.nextInt(256) + "." +
                       random.nextInt(256) + "." +
                       random.nextInt(256);
            ips.add(ip);
        }
        
        return ips;
    }
}

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@Testcontainers
class GeoIpIntegrationTest {
    
    @Container
    static RedisContainer redis = new RedisContainer(DockerImageName.parse("redis:7-alpine"))
        .withExposedPorts(6379);
    
    @Autowired
    private TestRestTemplate restTemplate;
    
    @DynamicPropertySource
    static void redisProperties(DynamicPropertyRegistry registry) {
        registry.add("spring.redis.host", redis::getHost);
        registry.add("spring.redis.port", redis::getFirstMappedPort);
    }
    
    @Test
    void testCompleteWorkflow() {
        // 測試IP查詢
        ResponseEntity<ApiResponse> response = restTemplate.getForEntity(
            "/api/v1/ip/query?ip=8.8.8.8", 
            ApiResponse.class
        );
        
        assertEquals(HttpStatus.OK, response.getStatusCode());
        assertNotNull(response.getBody());
        assertTrue(response.getBody().isSuccess());
        
        // 測試批量查詢
        BatchQueryRequest request = new BatchQueryRequest();
        request.setIps(Arrays.asList("8.8.8.8", "1.1.1.1", "114.114.114.114"));
        
        ResponseEntity<ApiResponse> batchResponse = restTemplate.postForEntity(
            "/api/v1/ip/batch-query",
            request,
            ApiResponse.class
        );
        
        assertEquals(HttpStatus.OK, batchResponse.getStatusCode());
        
        // 測試服務(wù)狀態(tài)
        ResponseEntity<ApiResponse> statusResponse = restTemplate.getForEntity(
            "/api/v1/ip/status",
            ApiResponse.class
        );
        
        assertEquals(HttpStatus.OK, statusResponse.getStatusCode());
    }
}

# Dockerfile
FROM openjdk:17-jdk-slim as builder

WORKDIR /app

# 復(fù)制Maven包裝器
COPY mvnw .
COPY .mvn .mvn
COPY pom.xml .

# 下載依賴
RUN chmod +x mvnw
RUN ./mvnw dependency:go-offline -B

# 復(fù)制源代碼
COPY src src

# 構(gòu)建應(yīng)用
RUN ./mvnw clean package -DskipTests

# 運行時鏡像
FROM openjdk:17-jre-slim

# 設(shè)置時區(qū)
ENV TZ=Asia/Shanghai
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone

WORKDIR /app

# 復(fù)制構(gòu)建產(chǎn)物
COPY --from=builder /app/target/*.jar app.jar

# 創(chuàng)建數(shù)據(jù)目錄
RUN mkdir -p /app/data/geoip

# 復(fù)制IP數(shù)據(jù)庫
COPY geoip /app/data/geoip

# 創(chuàng)建非root用戶
RUN groupadd -r spring && useradd -r -g spring spring
RUN chown -R spring:spring /app
USER spring

# 暴露端口
EXPOSE 8080

# 健康檢查
HEALTHCHECK --interval=30s --timeout=3s --start-period=60s --retries=3 \
    CMD curl -f http://localhost:8080/actuator/health || exit 1

# 啟動應(yīng)用
ENTRYPOINT ["java", "-jar", "app.jar"]

# docker-compose.yml
version: '3.8'

services:
  ip-geolocation:
    build: .
    container_name: ip-geolocation
    ports:
      - "8080:8080"
    environment:
      - SPRING_PROFILES_ACTIVE=prod
      - JAVA_OPTS=-Xmx512m -Xms256m
      - IP_GEOLOCATION_MODE=hybrid
      - IP_GEOLOCATION_CACHE_ENABLED=true
    volumes:
      - geoip-data:/app/data/geoip
      - logs:/app/logs
    networks:
      - geoip-network
    restart: unless-stopped
    depends_on:
      - redis
      - mysql
    
  redis:
    image: redis:7-alpine
    container_name: geoip-redis
    ports:
      - "6379:6379"
    volumes:
      - redis-data:/data
    command: redis-server --appendonly yes
    networks:
      - geoip-network
    restart: unless-stopped
    
  mysql:
    image: mysql:8.0
    container_name: geoip-mysql
    ports:
      - "3306:3306"
    environment:
      - MYSQL_ROOT_PASSWORD=rootpassword
      - MYSQL_DATABASE=geoip
      - MYSQL_USER=geoip
      - MYSQL_PASSWORD=geoip123
    volumes:
      - mysql-data:/var/lib/mysql
      - ./sql/init.sql:/docker-entrypoint-initdb.d/init.sql
    networks:
      - geoip-network
    restart: unless-stopped
    
  prometheus:
    image: prom/prometheus:latest
    container_name: geoip-prometheus
    ports:
      - "9090:9090"
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
      - prometheus-data:/prometheus
    networks:
      - geoip-network
    restart: unless-stopped
    
  grafana:
    image: grafana/grafana:latest
    container_name: geoip-grafana
    ports:
      - "3000:3000"
    environment:
      - GF_SECURITY_ADMIN_PASSWORD=admin123
    volumes:
      - grafana-data:/var/lib/grafana
      - ./grafana/dashboards:/etc/grafana/provisioning/dashboards
    networks:
      - geoip-network
    restart: unless-stopped

networks:
  geoip-network:
    driver: bridge

volumes:
  geoip-data:
  redis-data:
  mysql-data:
  prometheus-data:
  grafana-data:

# kubernetes/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: ip-geolocation
  namespace: default
  labels:
    app: ip-geolocation
spec:
  replicas: 3
  selector:
    matchLabels:
      app: ip-geolocation
  template:
    metadata:
      labels:
        app: ip-geolocation
    spec:
      containers:
      - name: ip-geolocation
        image: your-registry/ip-geolocation:latest
        ports:
        - containerPort: 8080
        env:
        - name: SPRING_PROFILES_ACTIVE
          value: "k8s"
        - name: JAVA_OPTS
          value: "-Xmx512m -Xms256m"
        - name: REDIS_HOST
          value: "geoip-redis"
        - name: MYSQL_HOST
          value: "geoip-mysql"
        resources:
          requests:
            memory: "256Mi"
            cpu: "250m"
          limits:
            memory: "512Mi"
            cpu: "500m"
        livenessProbe:
          httpGet:
            path: /actuator/health/liveness
            port: 8080
          initialDelaySeconds: 60
          periodSeconds: 10
        readinessProbe:
          httpGet:
            path: /actuator/health/readiness
            port: 8080
          initialDelaySeconds: 30
          periodSeconds: 5
        volumeMounts:
        - name: geoip-data
          mountPath: /app/data/geoip
        - name: logs
          mountPath: /app/logs
      volumes:
      - name: geoip-data
        persistentVolumeClaim:
          claimName: geoip-data-pvc
      - name: logs
        emptyDir: {}
---
apiVersion: v1
kind: Service
metadata:
  name: ip-geolocation
  namespace: default
spec:
  selector:
    app: ip-geolocation
  ports:
  - port: 80
    targetPort: 8080
  type: ClusterIP
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ip-geolocation
  namespace: default
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - host: ip-api.example.com
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: ip-geolocation
            port:
              number: 80

# prometheus.yml
global:
  scrape_interval: 15s
  evaluation_interval: 15s

scrape_configs:
  - job_name: 'ip-geolocation'
    metrics_path: '/actuator/prometheus'
    static_configs:
      - targets: ['ip-geolocation:8080']
        labels:
          application: 'ip-geolocation'
          environment: 'production'
  
  - job_name: 'kubernetes-pods'
    kubernetes_sd_configs:
      - role: pod
    relabel_configs:
      - source_labels: [__meta_kubernetes_pod_annotation_prometheus_io_scrape]
        action: keep
        regex: true
      - source_labels: [__meta_kubernetes_pod_annotation_prometheus_io_path]
        action: replace
        target_label: __metrics_path__
        regex: (.+)
      - source_labels: [__address__, __meta_kubernetes_pod_annotation_prometheus_io_port]
        action: replace
        regex: ([^:]+)(?::\d+)?;(\d+)
        replacement: $1:$2
        target_label: __address__
      - action: labelmap
        regex: __meta_kubernetes_pod_label_(.+)
      - source_labels: [__meta_kubernetes_namespace]
        action: replace
        target_label: kubernetes_namespace
      - source_labels: [__meta_kubernetes_pod_name]
        action: replace
        target_label: kubernetes_pod_name

# application-prod.yml
spring:
  datasource:
    url: jdbc:mysql://${MYSQL_HOST:localhost}:3306/geoip
    username: ${MYSQL_USER:geoip}
    password: ${MYSQL_PASSWORD:geoip123}
    hikari:
      maximum-pool-size: 20
      minimum-idle: 5
  
  redis:
    host: ${REDIS_HOST:localhost}
    port: 6379
    lettuce:
      pool:
        max-active: 20
        max-idle: 10
        min-idle: 5

  cache:
    type: redis
    redis:
      time-to-live: 3600s
      cache-null-values: false

management:
  endpoints:
    web:
      exposure:
        include: health,info,metrics,prometheus
  metrics:
    export:
      prometheus:
        enabled: true
  health:
    db:
      enabled: true
    redis:
      enabled: true

ip:
  geolocation:
    mode: hybrid
    offline:
      database: maxmind
      maxmind-db-path: file:/data/geoip/GeoLite2-City.mmdb
    online:
      enabled: true
      providers:
        - name: ipstack
          url: http://api.ipstack.com/{ip}?access_key=${IPSTACK_KEY}
          priority: 1
          timeout: 3000
    cache:
      enabled: true
      local-ttl: 300
      redis-ttl: 3600

logging:
  level:
    com.example.ip: INFO
  file:
    name: /app/logs/geoip.log
  logback:
    rollingpolicy:
      max-file-size: 10MB
      max-history: 30