eureka服务消费者

eureka服务消费者开发环境：windows10 maven：apache-maven-3.6.0 jdk 1.8 intellij IDEA 2018.3 第一步：创建springboot项目。

1.1 选择新建项目或者model1.2 选择创建springboot项目1.3 输入项目名称1.4 选择添加eureka服务和web依赖1.5选择项目存放地址--》finish2.1 项目结构2.2 pox.xml配置<?xml version="1.0" encoding="UTF-8"?><project xmlns="/POM/4.0.0"xmlns:xsi="/2001/XMLSchema-instance"xsi:schemaLocation="/POM/4.0.0/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.1.5.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.example</groupId><artifactId>springcloud_eureka_client</artifactId><version>0.0.1-SNAPSHOT</version><name>springcloud_eureka_client</name><description>Demo project for Spring Boot</description><properties><java.version>1.8</java.version><spring-cloud.version>Greenwich.SR1</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.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>2.3 application.yml配置###服务提供者的端口号server:port: 8000###spring:application:name: springcloud-server-membereureka:client:serviceUrl:###当前服务提供者注册到eureka服务的地址defaultZone: http://localhost:8100/eureka###需要将我的服务注册的eureka上register-with-eureka: true###需要检索服务fetch-registry: true2.4 控制器RestOrderController 配置package com.example.springcloud_eureka_client.api;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Value;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import org.springframework.web.client.RestTemplate;@RestControllerpublic class RestOrderController {//RestTemplate 是由springboot web组件提供默认整合ribbon负载均衡//rest方式底层采用httpclient技术@Autowiredprivate RestTemplate restTemplate;/*** springboot中有两种调用方式rest、fegin（springcloud）* 订单服务调用会员服务* @return*/@RequestMapping("/getOrder")public String getOrder(){//有两种调用方式一种是根据别名调用，一种直接根据url地址调用//String result =restTemplate.getForObject("http://127.0.0.1:8000/getMenber",String.class);String url = "http://springcloud-server-member/getMenber";String result = restTemplate.getForObject(url,String.class);return result;}}2.5启动类SpringcloudEurekaClientApplication配置package com.example.springcloud_eureka_client;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.client.loadbalancer.LoadBalanced;import flix.eureka.EnableEurekaClient;import org.springframework.context.annotation.Bean;import org.springframework.web.client.RestTemplate;@EnableEurekaClient@SpringBootApplicationpublic class SpringcloudEurekaClientApplication {public static void main(String[] args) {SpringApplication.run(SpringcloudEurekaClientApplication.class, args);}//解决RestTemplate找不到的解决方案，应该把如restTemplate注册到springboot的容器@Bean中//如果使用rest方式，以别名进行调用注册中心的服务提供者需要依赖ribbon负载均衡器@LoadBalanced//@LoadBalanced 能够让这个RestTemplate在请求时拥有客户端的负载均衡能力@Bean@LoadBalancedRestTemplate restTemplate(){return new RestTemplate();}}第三步：启动测试。

3.1 在启动类SpringcloudEurekaServerApplication中右键运行3.2 打开地址：http://localhost:8001/getOrder首先需要启动注册中心和服务提供者，如果需要做负载均衡（也就是服务提供者集群）测试需要创建两个服务提供者修改端口号即可。