北大青鸟 超市账单管理项目Java代码

package com.pb.servlet; import java.io.IOException; import java.util.ArrayList; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import com.pb.dao.UserDao; import com.pb.entity.User; @SuppressWarnings("serial") public class UserServlet extends HttpServlet{ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request, response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); response.setCharacterEncoding("UTF-8"); String flag = request.getParameter("flag"); boolean bl = false; UserDao userDao=new UserDao(); String path=""; if(flag.equals("user_manager")){ List<User> list=new ArrayList<User>(); list=userDao.getUser(); request.setAttribute("userList", list); path="user_manager.jsp"; }else if(flag.equals("findUser")){ String userName = request.getParameter("userName"); System.out.println("userName"+userName); List<User> list=userDao.findFromUser(userName); request.setAttribute("userList", list); path="user_manager.jsp"; }else if(flag.equals("goAddUser")){ path="user_add.jsp"; }else if(flag.equals("addUser")){ //获取用户信息 String userId = request.getParameter("userId"); String userName = request.getParameter("userName"); String password = request.getParameter("password"); String userGender = request.getParameter("userGender"); String userAge = request.getParameter("userAge"); String userTelephone = request.getParameter("userTelephone"); String userAddress = request.getParameter("userAddress"); String userRole = request.getParameter("userRole"); User user = new User(); user.setUserId(Integer.parseInt(userId)); user.setUserName(userName); user.setPassword(password); user.setUserGender(userGender); user.setUserTelephone(userTelephone); user.setUserAge(userAge); user.setUserAddress(userAddress); user.setUserRole(userRole); bl = userDao.addUser(user); if(bl==true){ //添加成功 String string="<script type='text/javascript'>alert('添加成功！');</script>"; request.setAttribute("update_msg", string); //重新获得显示信息 List<User> list=new ArrayList<User>(); list=userDao.getUser(); request.setAttribute("userList", list); path="user_manager.jsp"; } else { //添加失败 String string = "<script type='text/javascript'>alert('添加失败, 请重试!');</script>"; request.setAttribute("update_msg", string); //重新获得显示信息 List<User> list=new ArrayList<User>(); list=userDao.getUser(); request.setAttribute("userList", list); path="user_manager.jsp"; return; } }else if(flag.equals("getUserInfo")){//链接获取的某个用户信息 String userId=request.getParameter("userId"); User user = userDao.getUserById(Integer.parseInt(userId)); HttpSession session=request.getSession(); session.setAttribute("userInfo", user); path="user_update.jsp"; }else if(flag.equals("updateUser")){ //获取用户信息 String userId = request.getParameter("userId"); String userName = request.getParameter("userName"); String password = request.getParameter("password"); String userGender = request.getParameter("userGender"); String userAge = request.getParameter("userAge"); String userTelephone = request.getParameter("userTelephone"); String userAddress = request.getParameter("userAddress"); User user = new User(); user.setUserId(Integer.parseInt(userId)); user.setUserName(userName); user.setPassword(password); user.setUserGender(userGender); user.setUserTelephone(userTelephone); user.setUserAge(userAge); user.setUserAddress(userAddress); bl = userDao.updateUser(user); if(bl==true){ //修改成功 String string="<script type='text/javascript'>alert('修改成功！');</script>"; request.setAttribute("update_msg", string); //重新获得显示信息 List<User> list=new ArrayList<User>(); list=userDao.getUser(); request.setAttribute("userList", list); path="user_manager.jsp"; } else { //修改失败 String string = "<script type='text/javascript'>alert('修改失败, 请重试!');</script>"; request.setAttribute("update_msg", string); //重新获得显示信息 List<User> list=new ArrayList<User>(); list=userDao.getUser(); request.setAttribute("userList", list); path="user_manager.jsp"; return; } }else if(flag.equals("deleteUser")){ String userId=request.getParameter("userId"); bl=userDao.deleteUserById(Integer.parseInt(userId)); if(bl==true){ //修改成功 String string="<script type='text/javascript'>alert('删除成功！');</script>"; request.setAttribute("update_msg", string); //重新获得显示信息 List<User> list=new ArrayList<User>(); list=userDao.getUser(); request.setAttribute("userList", list); path="user_manager.jsp"; } else { //修改失败 String string = "<script type='text/javascript'>alert('删除失败, 请重试!');</script>"; request.setAttribute("update_msg", string); //重新获得显示信息 List<User> list=new ArrayList<User>(); list=userDao.getUser(); request.setAttribute("userList", list); path="user_manager.jsp"; return; } }else if(flag.equals("alterPassword")){ //修改密码 String newPassword = request.getParameter("newPassword"); String nowUserName = request.getParameter("nowUserName"); System.out.println(newPassword); System.out.println(nowUserName); User user = new User(); user.setUserName(nowUserName); user.setPassword(newPassword); bl=userDao.alterPassword(user); if(bl==true){ String string="alert('修改成功！'); "; request.setAttribute("alter_msg", string); path="user_alterPassword.jsp"; }else{ request.setAttribute("alter_msg2", "密码 修改失败 !"); path="user_alterPassword.jsp"; } } request.getRequestDispatcher(path).forward(request, response); } }