jave_Web实战03
本次来处理对于登录的数据的后端的处理,包括以下几个步骤,首先获得前端的数据,然后,在数据库里查询,查询成功添加到session(由于账号和对应的工号是十分重要的信息,经常会使用到),然后跳转到本人的主页面
package com.home.servlet;import com.home.mapper.ShopperMapper;
import com.home.pojo.Shopper;
import com.home.pojo.User;
import com.home.service.ShopperService;
import com.home.service.UserService;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 javax.swing.*;
import java.io.IOException;@WebServlet("/Login")
public class LoginServlet extends HttpServlet {@Overrideprotected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {String username = req.getParameter("username");String password = req.getParameter("password");User user = new User(username, password);UserService userService = new UserService();User user1= userService.login(user);req.getSession().setAttribute("user", user1);if(user1==null||user1.getType().equals("4")){resp.sendRedirect("index.jsp");}else {String type =user1.getType();req.getSession().setAttribute("type", type);if(type.equals("0")){ShopperService shopperService = new ShopperService();Shopper shopper=shopperService.selectShopperByUserId(username);req.getSession().setAttribute("shopper", shopper);}if(type.equals("1")){}if(type.equals("2")){}resp.sendRedirect("worker.jsp");}}@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {doPost(req, resp);}
}
