SpringCloud 中 RestTemplate的基本使用

1. 将RestTemolate交给Spring管理

   @Configuration
   public class BeanConfig {
   
       @Bean
       @LoadBalanced
       public RestTemplate getRestTemplate(){
           return new RestTemplate();
       }
   }
   

2. 使用

   @Autowired
   private RestTemplate restTemplate;
   
   public Object service3() {
   	//获取服务信息
       ServiceInstance myClient = loadBalancerClient.choose("MyClient");
       //获取服务IP
       String host = myClient.getHost();
       //获取服务端口
       int port = myClient.getPort();
   
   	//构建URL
   	String url1 = "http://" + host + ":" + port + "/hello";
   	//返回结果值
   	String forObject = restTemplate.getForObject(url1, String.class);
   	System.out.println(forObject);
   
   	//myclient是application-name，在url中小写
       String url2 = "http://myclient/hello";  
       //返回结果对象
   	ResponseEntity<String> forEntity = restTemplate.getForEntity(url2, String.class);
   	System.out.println(forEntity.getBody());
   
       return "service3: " + forObject;
   }