javaweb超市订单管理系统源码+数据库（95分以上高分javaweb课程设计）.zip

package com.csnz.servlet.User; import java.io.IOException; import java.io.PrintWriter; import java.sql.Date; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.time.LocalDate; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Locale; 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 com.alibaba.fastjson.JSONArray; import com.csnz.dao.User.UserDao; import com.csnz.dao.User.UserDaoImpl; import com.csnz.pojo.Role; import com.csnz.pojo.User; import com.csnz.service.Role.RoleService; import com.csnz.service.Role.RoleServiceImpl; import com.csnz.service.User.UserService; import com.csnz.service.User.UserServiceImpl; import com.csnz.util.Constants; import com.csnz.util.PageSupport; import com.mysql.cj.util.StringUtils; import com.mysql.cj.xdevapi.JsonArray; import com.sun.javafx.collections.MappingChange.Map; /** * Servlet implementation class UserServlet */ /* * UserServlet的复用 */ public class UserServlet extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String method = request.getParameter("method"); if("savepwd".equals(method) && !StringUtils.isNullOrEmpty(method)) { this.savePwd(request, response); } else if(method != null && method.equals("pwdmodify")){ this.pwdmodify(request, response); } else if(method != null && method.equals("query")) { this.query(request, response); } else if(method != null && method.equals("add")) { this.add(request, response); } else if(method != null && method.equals("deluser")){ this.delUser(request, response); } else if(method != null && method.equals("view")){ this.getUserById(request, response,"userview.jsp"); } else if(method != null && method.equals("modify")){ this.getUserById(request, response,"usermodify.jsp"); } else if(method != null && method.equals("modifyexe")){ this.modify(request, response); } else if(method != null && method.equals("getrolelist")){ this.getRoleList(request, response); } } private void getRoleList(HttpServletRequest request, HttpServletResponse response) { List<Role> roleList = new ArrayList<>(); HashMap<String, String> map = new HashMap<>(); List<Map<String, String>> data = new ArrayList<>(); //调用Role业务层代码 RoleService roleService = new RoleServiceImpl(); roleList = roleService.getRoleList(); int i = 0; for(Role role:roleList) { // data.add(e) } // 将hashMap转化为Json传回响应端 PrintWriter outPrint = null; try { outPrint = response.getWriter(); //转化为JSON数据 outPrint.flush(); } catch (IOException e) { e.printStackTrace(); } finally { outPrint.close(); } } private void modify(HttpServletRequest request, HttpServletResponse response) { //从前端页面获取用户id等信息 String id = request.getParameter("uid"); String birthday = request.getParameter("birthday"); DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd", Locale.ENGLISH);// 设定格式 java.util.Date convert = null; try { //解析字符串生成birthday的Date对象 convert = dateFormat.parse(birthday); } catch (ParseException e) { e.printStackTrace(); } //创建一个User对象 User user = new User(); user.setId(Integer.valueOf(id)); user.setUserName(request.getParameter("userName")); user.setGender(Integer.valueOf(request.getParameter("gender"))); user.setBirthday(convert); user.setPhone(request.getParameter("phone")); user.setAddress(request.getParameter("address")); //注意一点是，当用户角色名修改后，其用户角色ID也需要修改，待完善！ user.setUserRoleName(request.getParameter("userRole")); UserService userService = new UserServiceImpl(); boolean modify = userService.modify(user); System.out.println(); if(modify) { try { response.sendRedirect(request.getContextPath()+"/jsp/user.do?method=query"); } catch (IOException e) { e.printStackTrace(); } } else { try { request.getRequestDispatcher("usermodify.jsp").forward(request, response); } catch (ServletException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } } private void getUserById(HttpServletRequest request, HttpServletResponse response, String url) { String id = request.getParameter("uid"); if(!StringUtils.isNullOrEmpty(id)){ //调用后台方法得到user对象 UserService userService = new UserServiceImpl(); User user = userService.getUserById(id); // user.getId(); request.setAttribute("user", user); //获取角色列表 RoleServiceImpl roleService = new RoleServiceImpl(); List<Role> roleList = roleService.getRoleList(); request.setAttribute("roleList", roleList); try { request.getRequestDispatcher(url).forward(request, response); } catch (ServletException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } } private void delUser(HttpServletRequest request, HttpServletResponse response) { String id = request.getParameter("uid"); Integer delId = 0; try{ delId = Integer.parseInt(id); }catch (Exception e) { // TODO: handle exception delId = 0; } HashMap<String, String> resultMap = new HashMap<String, String>(); if(delId <= 0){ resultMap.put("delResult", "notexist"); }else{ UserService userService = new UserServiceImpl(); if(userService.deleteUserById(delId)){ resultMap.put("delResult", "true"); }else{ resultMap.put("delResult", "false"); } } //把resultMap转换成json对象输出 response.setContentType("application/json"); PrintWriter outPrintWriter = null; try { outPrintWriter = response.getWriter(); outPrintWriter.write(JSONArray.toJSONString(resultMap)); outPrintWriter.flush(); } catch (IOException e) { e.printStackTrace(); } finally { outPrintWriter.close(); } } private void add(HttpServletRequest request, HttpServletResponse response) { System.out.println("add()================"); String userCode = request.getParameter("userCode"); String userName = request.getParameter("userName"); String userPassword = request.getParameter("userPassword"); String gender = request.getParameter("gender"); String birthday = request.getParameter("birthday"); String phone = request.getParameter("phone"); String address = request.getParameter("address"); String userRole = request.getParameter("userRole"); User userInfo = (User)request.getSession().getAttribute(Constants.USER_SESSION); User user = new User(); user.setUserCode(userCode); user.setUserName(userName); user.setUserPassword(userPassword); user.setAddress(address); try { user.setBirthday(new SimpleDateFormat("yyyy-MM-dd").parse(birthday)); } catch (ParseException e) { e.printStackTrace(); } user.setGender(Integer.valueOf(gender)); user.setPhone(phone); user.setUserRole(Integer.valueOf(userRole)); user.setCreationDate(Date.valueOf(LocalDate.now())); user.setCreatedBy((int)userInfo.getId()); UserService userService = new UserServiceImpl(); if(userService.add(user)){ try { response.sendRedirect(request.getContextPath()+"/jsp/user.do?method=query"); } catch (IOException e) { e.printStackTrace(); } }else{ try { request.getRequestDispatcher("useradd.jsp").forward(request, response); } catch (ServletException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } } //重点、难点 public void query(HttpServletRequest request, HttpServletResponse response) { //查