servlet registration page

package cn.itcast.travel.web.servlet;



import cn.itcast.travel.domain.ResultInfo;
import cn.itcast.travel.domain.User;
import cn.itcast.travel.service.UserService;
import cn.itcast.travel.service.impl.UserServiceImpl;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.commons.beanutils.BeanUtils;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;

/**
 * @author newcityman
 * @date 2019/9/26 - 0:16
 */
@WebServlet("/registUserServlet")
public class RegistUserServlet extends HttpServlet {
 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 //1、获取参数
 Map<String, String[]> map = request.getParameterMap();
 //2、封装对象User
 User user = new User();
{the try 
BeanUtils. the populate (User , Map) ; 
} the catch (IllegalAccessException E) { 
e.printStackTrace () ; 
} the catch (a InvocationTargetException E) { 
e.printStackTrace () ; 
} 
 //. 3, calls the service method 
UserService service = new new UserServiceImpl () ; 
Boolean In Flag = service.regist (User) ; 
ResultInfo info = new new ResultInfo () ; //. 4, the response data IF (In Flag) { // successful registration info.setFlag ( to true) ; } the else { // registration failed info.setFlag ( to false) ; info.setErrorMsg (
 
 
 


 

"Registration failed") ; 
} 
 
 // the data into a json object serialization info, write back to the client 
ObjectMapper Mapper = new new ObjectMapper () ; 
String json = mapper.writeValueAsString (info) ; 
response.setContentType ( "the Application / json; charset . 8-UTF = ") ; 
. response.getWriter () Write (JSON) ; 
} 

 protected void the doGet (the HttpServletRequest Request , the HttpServletResponse Response) throws ServletException , IOException { 
 this.doPost (Request , Response) ; 
} 
}