spring cloud netflix eureka ribbon 示例

示例分三部分，

eureka-server   服务注册中心

eureka-provider   服务提供者

eureka-consumer   服务调用者

eureka-server   服务注册中心

简单的 boot

package com.yonyou;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;@EnableEurekaServer         //开启eureka服务@SpringBootApplication      //springBoot注解,spring在springBoot基础之上来构建项目public class EurekaServiceApplication {    //spirng boot的标准入口    public static void main(String[] args) {        SpringApplication.run(EurekaServiceApplication.class, args);    }}

配置文件

spring.application.name=eureka-serverserver.port=8888eureka.client.register-with-eureka=falseeureka.client.fetch-registry=falselogging.level.com.netflix.eureka=OFFlogging.level.com.netflix.discovery=OFFeureka.client.serviceUrl.defaultZone=http://127.0.0.1:${server.port}/eureka/

eureka-provider   服务提供者

package com.yonyou;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.client.ServiceInstance;import org.springframework.cloud.client.discovery.DiscoveryClient;import org.springframework.cloud.client.discovery.EnableDiscoveryClient;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import org.springframework.web.client.RestTemplate;/** * @author Administrator * */@EnableDiscoveryClient            //通过该注解，实现服务发现，注册@SpringBootApplicationpublic class EurekaClientApplication {    public static void main(String[] args) {        SpringApplication.run(EurekaClientApplication.class, args);    }}@RestControllerclass ServiceInstanceRestController {    @Autowired    private DiscoveryClient discoveryClient;    @RequestMapping("/service-instances/{applicationName}")    public List<ServiceInstance> serviceInstancesByApplicationName(            @PathVariable String applicationName) {        return this.discoveryClient.getInstances(applicationName);    }    @RequestMapping("/info")    public String sayhello() {        return "client-student";    }}

服务功能

package com.yonyou.student.web;import java.util.ArrayList;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.client.ServiceInstance;import org.springframework.cloud.client.discovery.DiscoveryClient;import org.springframework.cloud.client.discovery.EnableDiscoveryClient;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import org.springframework.web.client.RestTemplate;import com.yonyou.student.Student;@RestController@RequestMapping("/student")class StudentController {        @RequestMapping("list")    public List<Student> list() {    List<Student> list = new ArrayList<Student>();    list.add(new Student(111,"yaoming","156787787823","china shanghai"));    list.add(new Student(222,"chenglong","13898687682","china hongkong"));    list.add(new Student(333,"lilianjie","187923420023","china beijing"));        return list;    }            }

配置

spring.application.name=eureka-providerserver.port=7070logging.level.com.netflix.eureka=OFFlogging.level.com.netflix.discovery=OFFeureka.client.serviceUrl.defaultZone=http://127.0.0.1:8888/eureka/

eureka-consumer   服务调用者

boot 和 调用服务

package com.yonyou;import java.net.URI;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Value;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.client.ServiceInstance;import org.springframework.cloud.client.discovery.DiscoveryClient;import org.springframework.cloud.client.discovery.EnableDiscoveryClient;import org.springframework.cloud.client.loadbalancer.LoadBalanced;import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;import org.springframework.context.annotation.Bean;import org.springframework.http.client.SimpleClientHttpRequestFactory;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import org.springframework.web.client.RestTemplate;/** * @author Administrator * */@EnableDiscoveryClient            //通过该注解，实现服务发现，注册@SpringBootApplicationpublic class EurekaClientApplication {  /**     * LoadBalanced 注解表明restTemplate使用LoadBalancerClient执行请求     */    @Bean    @LoadBalanced    public RestTemplate restTemplate() {        RestTemplate template = new RestTemplate();        SimpleClientHttpRequestFactory factory = (SimpleClientHttpRequestFactory) template.getRequestFactory();        factory.setConnectTimeout(3000);        factory.setReadTimeout(3000);        return template;    }    public static void main(String[] args) {        SpringApplication.run(EurekaClientApplication.class, args);    }}@RestControllerclass ServiceInstanceRestController {@Autowired@LoadBalancedRestTemplate restTemplate;     @Autowired    private DiscoveryClient discoveryClient;    @RequestMapping("/service-instances/{applicationName}")    public List<ServiceInstance> serviceInstancesByApplicationName(            @PathVariable String applicationName) {        return this.discoveryClient.getInstances(applicationName);    }    @RequestMapping("/info")    public String sayhello() {        return "client-teacher";    }            // Restful服务对应的url地址      @Value("${rest.student.list}")      private String restStudentList;              @RequestMapping("/students")    public String test() {    //    ServiceInstance instance = loadBalancer.choose("eureka-client-student");//    URI uri = instance.getUri();        List list =  restTemplate.getForObject(restStudentList, List.class);        return list.toString();    }            }

配置文件

spring.application.name=eureka-consumerserver.port=6060logging.level.com.netflix.eureka=OFFlogging.level.com.netflix.discovery=OFFeureka.client.serviceUrl.defaultZone=http://127.0.0.1:8888/eureka/rest.student=http://eureka-provider:7070rest.student.list=${rest.student}/student/list

效果图

注册中心，看到注册的应用

查看provider 自身的服务

使用consumer 调用 provider的服务

示例下载地址：

http://download.csdn.net/detail/stonexmx/9769755