1.创建module

 修改配置文件类型

 

spring:
  application:
    name: service-ribbon

server:
  port: 9003

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8889/eureka/

 pom.xml文件

<?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>2.5.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.qdzwq</groupId>
    <artifactId>ribbonservice</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>ribbonservice</name>
    <description>ribbonservice</description>
    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>2020.0.3</spring-cloud.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </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>

创建启动类

package com.qdzwq.ribbonservice;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@EnableDiscoveryClient
public class RibbonserviceApplication {

    public static void main(String[] args) {
        SpringApplication.run(RibbonserviceApplication.class, args);
    }
    @Bean
    @LoadBalanced
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }

}

创建一个两个client、 ,通过spring.application.name 的项目名称来设置消费的服务提供者；在ribbon中它会根据服务名来选择具体的服务实例，根据服务实例在请求的时候会用具体的url替换掉服务名(eureka的两个客户端，可以参考我的eureka客户端配置文章)

package com.qdzwq.ribbonservice.service;


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;

@Service
public class RibbonService {

    @Autowired
    private RestTemplate restTemplate;

    public String helloRibbon(String name) {
        return restTemplate.getForObject("http://client/?name=" + name, String.class);
    }
}

创建controller

package com.qdzwq.ribbonservice.Controller;

import com.qdzwq.ribbonservice.service.RibbonService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class RibbonController {

    @Autowired
    private RibbonService ribbonService;

    @RequestMapping("/helloRibbon")
    public String helloRibbon(String name){
        return ribbonService.helloRibbon(name);
    }
}

启动服务，访问注册中心

http://127.0.0.1:9003/helloRibbon

访问上面的链接

 

 有问题，请联系我13522561676