遠(yuǎn)程連接Jedis和整合SpringBoot的詳細(xì)過(guò)程
更新時(shí)間：2021年08月23日 16:53:14 作者：@煙雨傾城ゝ
這篇文章主要介紹了遠(yuǎn)程連接Jedis和整合SpringBoot的詳細(xì)過(guò)程,本文通過(guò)圖文實(shí)例相結(jié)合給大家介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或工作具有一定的參考借鑒價(jià)值，需要的朋友可以參考下
一、遠(yuǎn)程連接Jedis
1、導(dǎo)入Jedis所需的jar包
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>3.2.0</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.62</version>
</dependency>
2、遠(yuǎn)程連接Redis注意事項(xiàng)
- 禁用Linux的防火墻：systemctl stop/disable firewalld.service
- 在配置文件redis.conf中注釋掉bind 127.0.0.1 ,然后修改protected-mode no
3、Jedis測(cè)試遠(yuǎn)程連接
package com.hcz;
import redis.clients.jedis.Jedis;
public class TestPing {
public static void main(String[] args) {
Jedis jedis = new Jedis("49.236.195.225",6379);
System.out.println("連接成功："+jedis.ping());
jedis.close();
}
}
4、常用的數(shù)據(jù)類(lèi)型
（1）Key
package com.hcz;
import redis.clients.jedis.Jedis;
import java.util.Set;
public class TestKey {
public static void main(String[] args) {
Jedis jedis = new Jedis("49.236.195.225",6379);
System.out.println("連接成功："+jedis.ping());
System.out.println("清空數(shù)據(jù)："+jedis.flushDB());
System.out.println("判斷某個(gè)鍵知否存在："+jedis.exists("username"));
System.out.println("新增<'username','hcz'>的鍵值對(duì)"+jedis.set("username","hcz"));
System.out.println("新增<'password','123'>的鍵值對(duì)"+jedis.set("password","123"));
System.out.println("系統(tǒng)中所有的鍵如下：");
Set<String> keys = jedis.keys("*");
System.out.println(keys);
System.out.println("獲取username的值："+jedis.get("username"));
System.out.println("獲取password的值："+jedis.get("password"));
System.out.println("刪除鍵password"+jedis.del("password"));
System.out.println("判斷password是否存在："+jedis.exists("password"));
System.out.println("查看鍵username所存儲(chǔ)的值的類(lèi)型："+jedis.type("username"));
System.out.println("隨機(jī)返回key空間的一個(gè)："+jedis.randomKey());
System.out.println("重命名key："+jedis.rename("username","newname"));
System.out.println("取出重命名后的newname:"+jedis.get("newname"));
System.out.println("按索引查詢："+jedis.select(0));
System.out.println("清空當(dāng)前數(shù)據(jù)庫(kù)所有的key："+jedis.flushDB());
System.out.println("返回當(dāng)前數(shù)據(jù)庫(kù)中key的數(shù)目："+jedis.dbSize());
System.out.println("刪除所有數(shù)據(jù)庫(kù)中的key："+jedis.flushAll());
jedis.close();
}
}
（2）String
package com.hcz;
import redis.clients.jedis.Jedis;
import java.util.Set;
import java.util.concurrent.TimeUnit;
public class TestString {
public static void main(String[] args) {
Jedis jedis = new Jedis("139.196.236.217",6379);
System.out.println("連接成功："+jedis.ping());
System.out.println("清空數(shù)據(jù)："+jedis.flushDB());
System.out.println("====增加數(shù)據(jù)====");
System.out.println(jedis.set("k1","v1"));
System.out.println(jedis.set("k2","v2"));
System.out.println(jedis.set("k3","v3"));
System.out.println("刪除鍵k2:"+jedis.del("k2"));
System.out.println("獲取鍵k2:"+jedis.get("k2"));
System.out.println("獲取鍵k1:"+jedis.get("k1"));
System.out.println("修改鍵k3:"+jedis.set("k3","new_v3"));
System.out.println("獲取k3的值："+jedis.get("k3"));
System.out.println("在k3后面加值："+jedis.append("k3","End"));
System.out.println("獲取k3的值："+jedis.get("k3"));
System.out.println("增加多個(gè)鍵值對(duì)："+jedis.mset("k4","v4","k5","v5"));
System.out.println("獲取多個(gè)鍵值對(duì)："+jedis.mget("k3","k4","k5"));
System.out.println("刪除多個(gè)鍵值對(duì)："+jedis.del("k1","k3"));
System.out.println("清空數(shù)據(jù)："+jedis.flushDB());
System.out.println("====新增鍵值對(duì)防止覆蓋原先值====");
System.out.println(jedis.setnx("k1","v1"));
System.out.println(jedis.setnx("k2","v2"));
System.out.println(jedis.setnx("k2","v2-new"));
System.out.println("獲取k1的值"+jedis.get("k1"));
System.out.println("獲取k2的值"+jedis.get("k2"));
System.out.println("====新增鍵值并設(shè)置有效時(shí)間====");
System.out.println(jedis.setex("k3",2,"v3"));
System.out.println("第一次獲取k3的值"+jedis.get("k3"));
try {
TimeUnit.SECONDS.sleep(3);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println("第二次獲取k3的值"+jedis.get("k3"));
System.out.println("====獲取原值，更新為新值=====");
System.out.println(jedis.getSet("k2","k2-getset"));
System.out.println(jedis.get("k2"));
System.out.println("獲得k2的值的字串："+jedis.getrange("k2",2,4));
jedis.close();
}
}
（3）List
package com.hcz;
import redis.clients.jedis.Jedis;
public class TestList {
public static void main(String[] args) {
Jedis jedis = new Jedis("49.236.195.225",6379);
System.out.println("連接成功："+jedis.ping());
System.out.println("清空數(shù)據(jù)："+jedis.flushDB());
System.out.println("====增加一個(gè)list====");
jedis.lpush("collections","ArrayList","Vector","Stack","HashMap","WeakHashMap","LinkedHashMap");
jedis.lpush("collections","HashSet");
jedis.lpush("collections","TreeSet");
jedis.lpush("collections","TreeMap");
System.out.println("collections的內(nèi)容："+jedis.lrange("collections",0,-1));
System.out.println("collections區(qū)間的0-3號(hào)元素："+jedis.lrange("collections",0,3));
System.out.println("===========================");
//刪除指定的值，第二個(gè)參數(shù)為刪除的個(gè)數(shù)（有重復(fù)時(shí)），后add進(jìn)去的值先被刪除，類(lèi)似出棧
System.out.println("刪除指定元素個(gè)數(shù)"+jedis.lrem("collections",2,"HashMap"));
System.out.println("collections的內(nèi)容："+jedis.lrange("collections",0,-1));
System.out.println("collections列表出棧（左端）："+jedis.lpop("collections"));
System.out.println("collections的內(nèi)容："+jedis.lrange("collections",0,-1));
System.out.println("collections添加元素，從列表右端，與lpush相對(duì)應(yīng)："+jedis.rpush("collections","List","Set","String"));
System.out.println("collections的內(nèi)容："+jedis.lrange("collections",0,-1));
System.out.println("collections列表出棧（右端）："+jedis.rpop("collections"));
System.out.println("collections的內(nèi)容："+jedis.lrange("collections",0,-1));
System.out.println("修改collections指定下標(biāo)為1的內(nèi)容："+jedis.lset("collections",1,"newHashSet"));
System.out.println("collections的內(nèi)容："+jedis.lrange("collections",0,-1));
System.out.println("===============================");
System.out.println("collections的長(zhǎng)度："+jedis.llen("collections"));
System.out.println("獲取collections下標(biāo)為2的元素："+jedis.lindex("collections",2));
System.out.println("===============================");
jedis.lpush("sortList","3","5","2","8","6","0");
System.out.println("sortList排序前："+jedis.lrange("sortList",0,-1));
System.out.println(jedis.sort("sortList"));
System.out.println("sortList排序后："+jedis.lrange("sortList",0,-1));
jedis.close();
}
}
（4）Set
package com.hcz;
import redis.clients.jedis.Jedis;
import java.util.Set;
public class TestSet {
public static void main(String[] args) {
Jedis jedis = new Jedis("49.236.195.225",6379);
System.out.println("連接成功："+jedis.ping());
System.out.println("清空數(shù)據(jù)："+jedis.flushDB());
System.out.println("==========向集合中添加元素（不重復(fù)）");
System.out.println(jedis.sadd("eleSet","e1","e0","e3","e6","e5","e7","e8"));
System.out.println(jedis.sadd("eleSet","e4"));
System.out.println(jedis.sadd("eleSet","e4"));
System.out.println("eleSet的所有元素為："+jedis.smembers("eleSet"));
System.out.println("刪除一個(gè)元素e0:"+jedis.srem("eleSet","e0"));
System.out.println("eleSet的所有元素為："+jedis.smembers("eleSet"));
System.out.println("刪除二個(gè)元素e7，e6:"+jedis.srem("eleSet","e7","e6"));
System.out.println("eleSet的所有元素為："+jedis.smembers("eleSet"));
System.out.println("隨機(jī)的移除集合中的一個(gè)元素："+jedis.spop("eleSet"));
System.out.println("隨機(jī)的移除集合中的一個(gè)元素："+jedis.spop("eleSet"));
System.out.println("eleSet的所有元素為："+jedis.smembers("eleSet"));
System.out.println("eleSet的元素個(gè)數(shù)為："+jedis.scard("eleSet"));
System.out.println("e3是否存在eleSet中："+jedis.sismember("eleSet","e3"));
System.out.println("e1是否存在eleSet中："+jedis.sismember("eleSet","e1"));
System.out.println("e5是否存在eleSet中："+jedis.sismember("eleSet","e5"));
System.out.println("==============================");
System.out.println(jedis.sadd("eleSet1","e1","e0","e3","e6","e5","e7","e8"));
System.out.println(jedis.sadd("eleSet2","e1","e0","e3","e6","e8"));
System.out.println("將eleSet1刪除e1并存入eleSet3中："+jedis.smove("eleSet1","eleSet3","e1"));
System.out.println("將eleSet1刪除e2并存入eleSet3中："+jedis.smove("eleSet1","eleSet3","e2"));
System.out.println("eleSet1的所有元素為："+jedis.smembers("eleSet1"));
System.out.println("eleSet3的所有元素為："+jedis.smembers("eleSet3"));
System.out.println("================集合運(yùn)算===============");
System.out.println("eleSet1的所有元素為："+jedis.smembers("eleSet1"));
System.out.println("eleSet2的所有元素為："+jedis.smembers("eleSet2"));
System.out.println("eleSet1和eleSet2的交集："+jedis.sinter("eleSet1","eleSet2"));
System.out.println("eleSet1和eleSet2的并集："+jedis.sunion("eleSet1","eleSet2"));
System.out.println("eleSet1和eleSet2的差集："+jedis.sdiff("eleSet1","eleSet2"));
jedis.sinterstore("eleSet4","eleSet1","eleSet2");//求交集并保存到eleSet4中
System.out.println("eleSet4的所有元素為："+jedis.smembers("eleSet4"));
jedis.close();
}
}
（5）Hash
package com.hcz;
import redis.clients.jedis.Jedis;
import java.util.HashMap;
import java.util.Map;
public class TestHash {
public static void main(String[] args) {
Jedis jedis = new Jedis("49.236.195.225",6379);
System.out.println("連接成功："+jedis.ping());
System.out.println("清空數(shù)據(jù)："+jedis.flushDB());
Map<String,String> map = new HashMap<>();
map.put("key1","v1");
map.put("key2","v2");
map.put("key3","v3");
map.put("key4","v4");
//添加名稱為hash的hash元素
jedis.hmset("hash",map);
//向名稱為hash的hash中添加key為key5,value為v5元素
jedis.hset("hash","key5","v5");
System.out.println("散列hash的所有鍵值對(duì)為："+jedis.hgetAll("hash"));
System.out.println("散列hash的所有鍵為："+jedis.hkeys("hash"));
System.out.println("散列hash的所有值為："+jedis.hvals("hash"));
System.out.println("將key6保存的值加上一個(gè)整數(shù)，如果key6不存在則添加key6:"+jedis.hincrBy("hash","key6",4));
System.out.println("散列hash的所有鍵值對(duì)為："+jedis.hgetAll("hash"));
System.out.println("刪除一個(gè)或者多個(gè)鍵值對(duì)："+jedis.hdel("hash","key2","key4"));
System.out.println("散列hash的所有鍵值對(duì)為："+jedis.hgetAll("hash"));
System.out.println("散列hash的所有鍵值對(duì)個(gè)數(shù)為："+jedis.hlen("hash"));
System.out.println("判斷hash中是否存在key2："+jedis.hexists("hash","key2"));
System.out.println("判斷hash中是否存在key3："+jedis.hexists("hash","key3"));
System.out.println("獲取hash中的值："+jedis.hget("hash","key3"));
System.out.println("獲取hash中的值："+jedis.hmget("hash","key3","key5"));
jedis.close();
}
}
5、Jedis實(shí)現(xiàn)事務(wù)
（1）事務(wù)正常執(zhí)行
public class TestMulti {
public static void main(String[] args) {
Jedis jedis = new Jedis("49.236.195.225",6379);
System.out.println("連接成功："+jedis.ping());
System.out.println("清空數(shù)據(jù)："+jedis.flushDB());
JSONObject jsonObject = new JSONObject();
jsonObject.put("hello","world");
jsonObject.put("name","hcz");
//開(kāi)啟事務(wù)
Transaction multi = jedis.multi();
String result = jsonObject.toJSONString();
try {
multi.set("user1",result);
multi.set("user2",result);
multi.exec();//執(zhí)行事務(wù)
}catch (Exception e){
multi.discard();//放棄事務(wù)
e.printStackTrace();
}finally {
System.out.println("user1為："+jedis.get("user1"));
System.out.println("user2為："+jedis.get("user2"));
jedis.close();//關(guān)閉連接
}
}
}
（2）事務(wù)編譯時(shí)異常
public class TestMulti {
public static void main(String[] args) {
Jedis jedis = new Jedis("49.236.195.225",6379);
System.out.println("連接成功："+jedis.ping());
System.out.println("清空數(shù)據(jù)："+jedis.flushDB());
JSONObject jsonObject = new JSONObject();
jsonObject.put("hello","world");
jsonObject.put("name","hcz");
//開(kāi)啟事務(wù)
Transaction multi = jedis.multi();
String result = jsonObject.toJSONString();
try {
multi.set("user1",result);
multi.set("user2",result);
int i = 1/0;//代碼拋出異常事務(wù)，執(zhí)行失敗
multi.exec();//執(zhí)行事務(wù)
}catch (Exception e){
multi.discard();//放棄事務(wù)
e.printStackTrace();
}finally {
System.out.println("user1為："+jedis.get("user1"));
System.out.println("user2為："+jedis.get("user2"));
jedis.close();//關(guān)閉連接
}
}
}
二、整合SpringBoot
1、導(dǎo)入依賴
說(shuō)明：
在SpringBoot2.x之后，原來(lái)使用的jedis被替換為了lettuce
jedis：采用直連，多個(gè)線程操作的話是不安全的，如果想要避免不安全，可以使用 jedis pool連接池！更像BIO模式lettuce：采用netty，實(shí)例可以再多個(gè)線程共享，不存在線程不安全的情況，可以減少線程數(shù)據(jù)！更像NIO模式
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
2、配置連接
spring:
redis:
host: 49.236.195.225 #遠(yuǎn)程主機(jī)名
port: 6379 #端口號(hào)
jedis:
pool:
max-active: 8
max-wait: -1ms
max-idle: 500
min-idle: 0
lettuce:
shutdown-timeout: 0ms
3、測(cè)試連接
@SpringBootTest
class SpringbootRedisApplicationTests {
@Autowired
private RedisTemplate redisTemplate;
@Test
void contextLoads() {
//redisTemplate
//opsForValue 操作字符串 類(lèi)似String
//opsForList 操作List 類(lèi)型List
//opsForSet
//opsForHash
//opsForZSet
//opsForGeo
//opsForHyperLogLog
//獲取連接對(duì)象
RedisConnection connection = redisTemplate.getConnectionFactory().getConnection();
connection.flushDb();
//connection.flushAll();
redisTemplate.opsForValue().set("myKey","myValue");
System.out.println(redisTemplate.opsForValue().get("myKey"));
}
}
4、序列化
@Component
@AllArgsConstructor
@NoArgsConstructor
@Data
//在企業(yè)中，我們所有的pojo都會(huì)序列化
public class User implements Serializable {
private String name;
private int age;
}
@Autowired
private RedisTemplate redisTemplate;
@Test
public void test(){
try {
//真實(shí)開(kāi)發(fā)一般使用json來(lái)傳遞對(duì)象
User user = new User("張三 ", 18);
//String jsonUser = new ObjectMapper().writeValueAsString(user);
redisTemplate.opsForValue().set("user",user);
System.out.println(redisTemplate.opsForValue().get("user"));
} catch (JsonProcessingException e) {
e.printStackTrace();
}
}
5、自定義序列化
@Configuration
public class RedisConfig {
//自定義了一個(gè)RedisTemplate
@Bean
@SuppressWarnings("all")
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
//為了開(kāi)發(fā)方便，一般使用<String, Object>
RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
template.setConnectionFactory(factory);
//Json序列化配置
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
//String的序列化
StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
// key采用String的序列化方式
template.setKeySerializer(stringRedisSerializer);
// hash的key也采用String的序列化方式
template.setHashKeySerializer(stringRedisSerializer);
// value序列化方式采用jackson
template.setValueSerializer(jackson2JsonRedisSerializer);
// hash的value序列化方式采用jackson
template.setHashValueSerializer(jackson2JsonRedisSerializer);
template.afterPropertiesSet();
return template;
}
}
6、自定義工具類(lèi)
自定義工具類(lèi)的好處：
已經(jīng)幫我們將原生的redisTemplate.opsForValue().set() 復(fù)雜命令封裝成一些簡(jiǎn)單的命令
@Component
public final class RedisUtil {
@Autowired
private RedisTemplate<String, Object> redisTemplate;
// =============================common============================
/**
* 指定緩存失效時(shí)間
* @param key 鍵
* @param time 時(shí)間(秒)
*/
public boolean expire(String key, long time) {
try {
if (time > 0) {
redisTemplate.expire(key, time, TimeUnit.SECONDS);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
…………省略后面一大堆代碼…………
7、再次進(jìn)行測(cè)試
@Autowired
private RedisUtil redisUtil;
@Test
public void test2(){
redisUtil.set("username","hcz");
System.out.println(redisUtil.get("username"));
redisUtil.hset("hash","age",18);
System.out.println(redisUtil.hget("hash","age"));
redisUtil.hincr("hash","age",5);
System.out.println(redisUtil.hget("hash","age"));
}
到此這篇關(guān)于遠(yuǎn)程連接Jedis和整合SpringBoot的詳細(xì)過(guò)程的文章就介紹到這了,更多相關(guān)Jedis和SpringBoot整合內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！
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