SpringCloud之@FeignClient()注解的使用方式

@FeignClient(value = "feign-server",configuration = FeignConfig.class)  //需要一个配置文件
public interface TestService {
    @RequestLine("POST /feign/test")    //对应请求方式和路径
    String feign(@RequestBody UserDO userDO);
}

@EnableFeignClients
@SpringBootConfiguration
public class FeignConfig {
    @Bean
    public Contract contract(){
        return new feign.Contract.Default();
    }
}

@RequestMapping(value = "/add" ,method = RequestMethod.GET)
public Integer add(@RequestParam Integer a, @RequestParam Integer b) {
    ServiceInstance instance = client.getLocalServiceInstance();
    Integer r = a + b;
    logger.info("/add, host:" + instance.getHost() + ", service_id:" + instance.getServiceId() + ", result:" + r);
    return r;
}

 @FeignClient("compute-service")
 public interface ComputeClient { 
     @RequestMapping(method = RequestMethod.GET, value = "/add")
     Integer add(@RequestParam(value = "a") Integer a, @RequestParam(value = "b") Integer b); 
 }

spring.application.name

 @Autowired
 ComputeClient computeClient;
 
 @RequestMapping(value = "/add", method = RequestMethod.GET)
 public Integer add() {
     return computeClient.add(10, 20);
 }

 @RestController
 @RequestMapping("/demo")
 @EnableAutoConfiguration
 public class HelloController {
    @RequestMapping(value = "/test",method = RequestMethod.POST)
    String test1(){
       return "hello,test1()";
    }
 }

 @FeignClient("test-Demo")
 public interface TestDemo {
     @RequestMapping(method = RequestMethod.POST, value = "/demo/test")
     String test();
 }

 @RestController
 public class ConsumerController {
     @Autowired
     TestDemo testDemo;
 
     @Autowired
     ComputeClient computeClient;
 
     @RequestMapping(value = "/add", method = RequestMethod.GET)
     public Integer add() {
         return computeClient.add(10, 20);
     }
 
     @RequestMapping(value = "/test", method = RequestMethod.GET)
     public String test() {
         return testDemo.test();
     }
 }