使用idea2018搭建SSM框架

package com.chatRobot.controller; import javax.servlet.http.HttpServletRequest; import com.chatRobot.model.User; import com.chatRobot.service.IUserService; import com.fasterxml.jackson.databind.ObjectMapper; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import javax.annotation.Resource; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.util.Date; @Controller @RequestMapping("/user") public class UserController { @Resource private IUserService userService; @RequestMapping("/showUser.do") public void selectUser(HttpServletRequest request, HttpServletResponse response) throws IOException { request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); long userId = Long.parseLong(request.getParameter("id")); User user = this.userService.selectUser(userId); ObjectMapper mapper = new ObjectMapper(); response.getWriter().write(mapper.writeValueAsString(user)); response.getWriter().close(); } @RequestMapping("/addUser.do") public void addUser(HttpServletRequest request, HttpServletResponse response,User user) throws IOException { request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); user.setStatus(0); user.setRegTime(new Date()); user.setRegIp("127.0.0.3"); userService.addUser(user); System.out.println(user.getUsername() + "OK！"); } }