如何用原生feign简化http的调用

package com.example.demo.controller;import com.example.demo.bean.User;import org.springframework.web.bind.annotation.*;@RestController@RequestMapping("/user")public class UserAction { ???@RequestMapping("/list") ???public Object list(){ ???????return "sdfsdfsdfsdf"; ???} ???@RequestMapping("/add") ???public Object add(@RequestBody User user){ ???????return "sdfsdfsdfsdf"; ???}}

package com.example.demo.feign;import com.example.demo.bean.User;import feign.Body;import feign.Headers;import feign.Param;import feign.RequestLine;public interface Invorker { ???@RequestLine(value = "POST /user/add") ???@Headers("Content-Type: application/json") ???public Object add(User user); ???@RequestLine("GET /user/list") ???public Object list();}