spring cloud基础知识 ——spring cloud 的服务消费者fegin(四)

开发工具idea，开发技术spring cloud

我的学习借鉴了 https://blog.****.net/sky786905664/article/details/78995068

作者 Sky786905664 的一些文章

新建工程module：service-fegin

依赖文件如下：

<?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>2.3.3.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>com.dream.cloud</groupId>
   <artifactId>service-feign</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>service-feign</name>
   <description>Demo project for Spring Boot</description>

   <properties>
      <java.version>1.8</java.version>
      <spring-cloud.version>Hoxton.SR8</spring-cloud.version>
   </properties>

   <dependencies>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>
      <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-openfeign</artifactId>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
         <exclusions>
            <exclusion>
               <groupId>org.junit.vintage</groupId>
               <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
         </exclusions>
      </dependency>
   </dependencies>

   <dependencyManagement>
      <dependencies>
         <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring-cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
         </dependency>
      </dependencies>
   </dependencyManagement>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>

</project>

配置文件如下：

server.port=8085
spring.application.name=service-feign
eureka.client.register-with-eureka=true
eureka.client.fetch-registry=true
eureka.client.serviceUrl.defaultZone=http://localhost:8081/eureka/

新建controller

@RestController
public class FeignController {
    @Autowired
    FeignService feignService;

    @RequestMapping(value = "/hi")
    public String sayHi(@RequestParam String name) {
        return feignService.sayHiFromClientOne(name);
    }
}

新建service

@FeignClient(value = "eurekaclient")
public interface FeignService {
    @RequestMapping(value = "/index/hi", method = RequestMethod.GET)
    String sayHiFromClientOne(@RequestParam(value = "name") String name);
}

启动注册中心全部eureka-server 和 eureka-client (eureka-client启动两个才能看出负载均衡)

访问地址：http://localhost:8085/hi?name=forezp

结果展示：

spring cloud基础知识 ——spring cloud 的服务消费者fegin(四)

可以看出服务向两个eureka-client 分别请求，实现了负载均衡，然后也对服务进行了消费

码云地址：https://gitee.com/hjc2/springcloud.git

spring cloud基础知识 ——spring cloud 的服务消费者fegin(四)

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