Service calls between Feign

Feign is to simplify Java HTTP client development tool (java-to-httpclient-binder), which was inspired by Retrofit, JAXRS-2.0 and WebSocket. Feign intention is to reduce the complexity of unified Denominator bind to the HTTP API, does not distinguish whether it is restful.

 

Add dependent 

<dependency> 
    <groupId>org.springframework.cloud</groupId> 
    <artifactId>spring‐cloud‐starter‐openfeign</artifactId> 
</dependency>

Add comment startup class 

  @EnableDiscoveryClient

   @EnableFeignClients

Create a client package 

  Creating interfaces 

@FeignClient ( "API-Base" ) // call the function from which the service, pay attention to which name and service name to be called consistent, and can not contain underscore

public  interface LabelClient { 
@RequestMapping (value = "/ Test / {ID}", Method = RequestMethod.GET) // @ @RequestMapping annotation for micro-called service address mapping. Note @PathVariable notes must specify the parameter name, otherwise the wrong 
 public the Result findById (@PathVariable ( "the above mentioned id") String the above mentioned id);}

transfer 

@Autowired 
private LabelClient labelClient; 

@RequestMapping(value = "/test/{testid}")
 public Result findById(@PathVariable String testid){
 　　Result result = labelClient.findById(labelid);
 　　return result;
 }

feign integrated load balancing