<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
        </dependency>

        <dependency>
            <groupId>com.alibaba.csp</groupId>
            <artifactId>sentinel-zuul-adapter</artifactId>
            <version>1.7.1</version>
        </dependency>

server:
  port: 6001
spring:
  application:
    name: e-zuul

eureka:
  instance:
    hostname: localhost
    lease-expiration-duration-in-seconds: 90 #表示服務(wù)端多長(zhǎng)時(shí)間沒有接受到心跳信息后可以刪除自己
    lease-renewal-interval-in-seconds: 30 #表示需要要向服務(wù)端發(fā)送信息，表示自己還活著
    ip-address: true
  client:
    healthcheck:
      enabled: true #客戶端心跳檢測(cè)
    service-url:
      defaultZone: http://${eureka.instance.hostname}:3001/eureka/

zuul:
  add-proxy-headers: true
  LogFilter:
    pre:
      disable=true:
  routes:
    e-email:
      serviceId: e-email
      path: /email/**
    e-user:
      serviceId: e-user
      path: /user/**

package com.mjlf.ezuul.config;
import com.alibaba.csp.sentinel.adapter.gateway.common.rule.GatewayFlowRule;
import com.alibaba.csp.sentinel.adapter.gateway.common.rule.GatewayRuleManager;
import com.alibaba.csp.sentinel.adapter.gateway.zuul.fallback.ZuulBlockFallbackManager;
import com.alibaba.csp.sentinel.adapter.gateway.zuul.filters.SentinelZuulErrorFilter;
import com.alibaba.csp.sentinel.adapter.gateway.zuul.filters.SentinelZuulPostFilter;
import com.alibaba.csp.sentinel.adapter.gateway.zuul.filters.SentinelZuulPreFilter;
import com.alibaba.csp.sentinel.slots.block.RuleConstant;
import com.alibaba.csp.sentinel.slots.block.degrade.DegradeRule;
import com.alibaba.csp.sentinel.slots.block.degrade.DegradeRuleManager;
import com.netflix.zuul.ZuulFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.annotation.PostConstruct;
import java.util.HashSet;
import java.util.Set;

@Configuration
public class ZuulConfig {
    @Bean
    public ZuulFilter sentinelZuulPreFilter() {
        // We can also provider the filter order in the constructor.
        return new SentinelZuulPreFilter();
    }

    @Bean
    public ZuulFilter sentinelZuulPostFilter() {
        return new SentinelZuulPostFilter();
    }

    @Bean
    public ZuulFilter sentinelZuulErrorFilter() {
        return new SentinelZuulErrorFilter();
    }

    @PostConstruct
    public void doInit() {
        // 注冊(cè) FallbackProvider
        ZuulBlockFallbackManager.registerProvider(new MyBlockFallbackProvider());
        initGatewayRules();
    }

    /**
     * 配置限流規(guī)則
     */
    private void initGatewayRules() {
        Set<GatewayFlowRule> rules = new HashSet<>();
        rules.add(new GatewayFlowRule("e-user").setCount(3) // 限流閾值
                .setIntervalSec(1) // 統(tǒng)計(jì)時(shí)間窗口，單位是秒，默認(rèn)是 1 秒
        );
        rules.add(new GatewayFlowRule("e-user")
                .setGrade(RuleConstant.DEGRADE_GRADE_RT)//設(shè)置超時(shí)類型規(guī)則
                .setMaxQueueingTimeoutMs(500)
        );
        GatewayRuleManager.loadRules(rules);
    }
}

// 自定義 FallbackProvider
@Component
public class MyBlockFallbackProvider implements ZuulBlockFallbackProvider {
    private Logger logger = LoggerFactory.getLogger(DefaultBlockFallbackProvider.class);
    // you can define route as service level 
    @Override
    public String getRoute() {
        return "*";
    }

    @Override
    public BlockResponse fallbackResponse(String route, Throwable cause) {
        RecordLog.info(String.format("[Sentinel DefaultBlockFallbackProvider] Run fallback route: %s", route));
        if (cause instanceof BlockException) {
            return new BlockResponse(429, "Sentinel block exception", route);
        } else {
            return new BlockResponse(500, "System Error", route);
        }
    }
}

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
</dependency>
<dependency>
    <groupId>com.alibaba.csp</groupId>
    <artifactId>sentinel-datasource-nacos</artifactId>
</dependency>
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-alibaba-sentinel-gateway</artifactId>
</dependency>

spring:
  # sentinel動(dòng)態(tài)配置規(guī)則
  cloud:
    sentinel:
      zuul:
        enabled: true
        order:
          pre: 2000
          post: 500
          error: -100
      filter:
        enabled: false
      datasource:
        # 限流
        ds1:
          nacos:
            server-addr: ${zlt.nacos.server-addr}
            dataId: ${spring.application.name}-sentinel-gw-flow
            groupId: DEFAULT_GROUP
            rule-type: gw-flow
        # api分組
        ds2:
          nacos:
            server-addr: ${zlt.nacos.server-addr}
            dataId: ${spring.application.name}-sentinel-gw-api-group
            groupId: DEFAULT_GROUP
            rule-type: gw-api-group

[
  {
    "resource": "user",
    "count": 0,
    "paramItem": {
      "parseStrategy": 3,
      "fieldName": "name"
    }
  },
  {
    "resource": "uaa_api",
    "count": 0
  }
]

[
  {
    "apiName": "uaa_api",
    "predicateItems": [
      {
        "pattern": "/user/login"
      },
      {
        "pattern": "/api-uaa/oauth/**",
        "matchStrategy": 1
      }
    ]
  }
]

java -Dcsp.sentinel.app.type=1 -jar zuul-gateway.jar