feign 整合sentinel_使用Nacos作注册中心，整合SpringCloud Alibaba Sentinel的限流熔断的框架搭建...

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---开始---

首先准备三个项目

我这里是

调用关系：microservice-robot --》 microservice-myuser --》 microservice-order

# SpringCloud Alibaba 整合三部曲# 一般三步：加依赖、加注解、加配置

pom.xml

<?xml version="1.0" encoding="UTF-8"?>xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">4.0.0com.itmuch.cloudspring-cloud-learning-rancher0.0.1-SNAPSHOTpommicroservice-robotmicroservice-ordermicroservice-myuserGreenwich.RELEASE2.1.0.RELEASE2.7.61.0.21.0.11.0.1UTF-8UTF-81.8org.springframework.bootspring-boot-starter-parent2.1.5.RELEASEcom.alibaba.cloudspring-cloud-starter-alibaba-sentinelcom.alibaba.cloudspring-cloud-starter-alibaba-nacos-configcom.alibaba.cloudspring-cloud-starter-alibaba-nacos-discoveryorg.springframework.cloudspring-cloud-starter-openfeignorg.springframework.bootspring-boot-starter-weborg.springframework.bootspring-boot-starter-testtestorg.springframework.bootspring-boot-starter-actuatorio.micrometermicrometer-coreio.micrometermicrometer-registry-prometheusorg.hibernatehibernate-validatorcom.fasterxml.jackson.corejackson-databindorg.springframework.cloudspring-cloud-dependencies${spring-cloud.version}pomimportcom.alibaba.cloudspring-cloud-alibaba-dependencies${spring-cloud-alibaba.version}pomimportorg.springframework.bootspring-boot-maven-pluginorg.springframeworkspringloaded1.2.5.RELEASEorg.mybatis.generatormybatis-generator-maven-plugin1.3.2${basedir}/src/main/resources/generator/generatorConfig.xmltruetruemysqlmysql-connector-java${mysql.version}tk.mybatismapper-generator1.0.0

application.yml

spring:application:name: microservice-robotcloud:sentinel:transport:# port: 8719dashboard: 192.168.213.1:8080nacos:discovery:server-addr: 192.168.213.1:8848config:        server-addr: 192.168.213.1:8848        feign:sentinel:    enabled: true

这里简单只需要实现A->B->C的一种微服务调用关系即可

通过feign 进行调用

@FeignClient(name = "microservice-order", fallback = FallbackRemoteClient.class) public interface RemoteClient {     CallResult getGood(); }

@Slf4j@Componentpublic class FallbackRemoteClient implements RemoteClient{@Overridepublic CallResult getGood(){          log.info("调用  微服务失败");return CallResult.failure("调用 微服务失败"); } }

添加一个Controller

@RefreshScope@RestControllerpublic class MyController {@RequestMapping(value="/callmyuser", method={RequestMethod.GET})public CallResult query3() throws Exception { System.out.println(" ...... call 。。。。" );return CallResult.success(remoteClient.getGood()); } }

启动nacos

# 启动nacosstartup.cmd

启动sentinel

# 启动sentineljava -Dserver.port=8080 -Dcsp.sentinel.dashboard.server=localhost:8080 -Dproject.name=sentinel-dashboard -jar sentinel-dashboard.jar

停止microservice-order微服务的时候，则看到了这个界面

需要获取源代码的可以找腾哥

有任何问题欢迎进群讨论：腾哥的微信：419644560

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