spring data jpa + spring + json demo

package com.learn.wechat.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.http.MediaType; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; import com.learn.wechat.model.User; import com.learn.wechat.service.UserService; @RestController @RequestMapping(value="/framework") public class UserController { @Autowired private UserService userService; @RequestMapping(value="/saveUser", method=RequestMethod.POST, produces = MediaType.APPLICATION_JSON_VALUE+";charset=UTF-8") public String saveUser(@RequestBody User user){ return userService.add(user); } @RequestMapping(value="/saveUser/{account}", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE+";charset=UTF-8") public String add(@PathVariable String account){ return userService.addUser(account); } @RequestMapping(value="/user/{id}", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE+";charset=UTF-8") public User add(@PathVariable Long id){ return userService.getOneUser(id); } }