spring cloud netflix eureka ribbon 示例

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 @SpringBootApplication public 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); } } @RestController class ServiceInstanceRestController { @Autowired @LoadBalanced RestTemplate 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(); } }