Inherit the characteristics of significance feign what?

Significance is to reduce the amount of code duplication. Implementation as follows:

//请求接口
public interface DiscoveryClient {
    @RequestMapping("/ping/{hello}")
    String infoForServiceId(@PathVariable  String hello);
}
//feign客户端接口
@FeignClient(name = "discovery-client")
public interface DiscoveryFeignClient extends  DiscoveryClient{

}
//不使用继承特性时的controller及方法
@RequestMapping("/test/feign")
@RestController
public class TestFeignController {
    @Autowired
    DiscoveryFeignClient discoveryClient;
    @Autowired
    ZuulClient zuulClient;

	//不使用继承时，我们需要手工加上  @RequestMapping("/pingByServiceId/{hello}")
    @RequestMapping("/pingByServiceId/{hello}")
    public String infoForServiceId(@PathVariable String hello){
        String str = discoveryClient.infoForServiceId(hello);
        return str;
    }
}
//使用feigin继承特性的Controller
@RequestMapping("/test/feign")
@RestController
public class TestFeignInheritanceController implements DiscoveryClient {

    @Autowired
    DiscoveryFeignClient discoveryClient;

   //使用继承时，不需要加@RequestMapping("/ping/{hello}")  访问此方法时，使用ip/test/feign/ping/参数 的方式访问
    @Override
    public String infoForServiceId(@PathVariable String hello){

        String str = discoveryClient.infoForServiceId(hello);
        return str;
    }

}

When using inheritance embodiment, the controller may be a method inherited interface @RequestMapping, when not in use need to manually define inheritance.

Tested implementation class method parameter annotation @ PathVariable, @ RequestMapping, @ RequestParam, @ RequestHeader, @ RequestBody can not be added.

	
@RequestMapping("/test/feign")
@RestController
public class TestFeignInheritanceController implements DiscoveryClient {

    @Autowired
    DiscoveryFeignClient discoveryClient;

    /**
    * @Title:
    * @Description:  测试根据服务name进行访问
    * @param
    * @return
    * @author huxx
    * @date 2019/11/8 下午3:24
    * @update
    */
    @Override
    public String infoForServiceId( String hello,String name,String age, Map<String,String> params){

        String str = discoveryClient.infoForServiceId(hello,name,age,params);
        return str;
    }

}

/**
* @Title: DiscoveryClient
* @Description:  测试使用feign的方式引用discovery-client服务
* @author huxx
* @date 2020/3/23 下午4:19
* @update
*/
public interface DiscoveryClient {
    @RequestMapping("/ping/{hello}")
    String infoForServiceId(@PathVariable  String hello, @RequestParam("name") String name, @RequestHeader("age") String age,@RequestBody Map<String,String> params);
}

feign interface can no longer inherit other interface, otherwise an error as follows: Only single-level inheritance supported: RefactTestFeignService support inheritance in SpringCloud in Feign, but does not support multi-layered inheritance
(the conclusions of others, not personally verified)