基于javaweb的超市订单管理系统

package com.whh.servlet.user; import com.alibaba.fastjson.JSONArray; import com.mysql.jdbc.StringUtils; import com.whh.pojo.Role; import com.whh.pojo.User; import com.whh.service.role.RoleService; import com.whh.service.role.RoleServiceImpl; import com.whh.service.user.UserService; import com.whh.service.user.UserServiceImpl; import com.whh.util.Constants; import com.whh.util.PageSupport; 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.io.PrintWriter; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; @WebServlet("/jsp/user.do") public class UserServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String method = request.getParameter("method"); System.out.println("method----> " + method); if (method != null && method.equals("add")) { //增加操作 this.add(request, response); } else if (method != null && method.equals("query")) { this.query(request, response); } else if (method != null && method.equals("getrolelist")) { this.getRoleList(request, response); } else if (method != null && method.equals("ucexist")) { this.UserCodeExist(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("pwdmodify")) { this.pwdModify(request, response); } else if (method != null && method.equals("savepwd")) { this.updatePwd(request, response); } } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doGet(req,resp); } //查询所有用户信息 public void query(HttpServletRequest req, HttpServletResponse resp){ //从前端拿数据 String queryUserName = req.getParameter("queryname"); String temp = req.getParameter("queryUserRole"); String pageIndex = req.getParameter("pageIndex"); int queryUserRole=0; //获取用户列表 UserService userServlet=new UserServiceImpl(); List<User> userList=null; //第一次走这个请求 一定是第一页 页面大小固定 int pageSize=5; int currentPageNo=1; if (queryUserName==null){ queryUserName=""; } if (temp!=null&& !temp.equals("")){ queryUserRole =Integer.parseInt(temp);//给查询赋值 } if (pageIndex!=null){ currentPageNo=Integer.parseInt(pageIndex); } //获取用户的总数(分页：上一页，下一页) int totalCount=userServlet.getUserCount(queryUserName,queryUserRole); //总页数支持 PageSupport pageSupport = new PageSupport(); pageSupport.setCurrentPageNo(currentPageNo); pageSupport.setPageSize(pageSize); pageSupport.setTotalCount(totalCount); int totalPageCount=((int)(totalCount/pageSize))+1; //控制首页和尾页 //如果页面要小于1了 就显示第一页的东西 if (currentPageNo<1){ currentPageNo=1; }else if (currentPageNo>totalPageCount){//当前页面大于了最后一页 currentPageNo=totalPageCount; } //获取用户列表展示 userList=userServlet.getUserList(queryUserName,queryUserRole,currentPageNo,pageSize); req.setAttribute("userList",userList); RoleServiceImpl roleService=new RoleServiceImpl(); List<Role> roleList=roleService.getRoleList(); req.setAttribute("roleList",roleList); req.setAttribute("totalCount",totalCount); req.setAttribute("currentPageNo",currentPageNo); req.setAttribute("queryUserName",queryUserName); req.setAttribute("queryUserRole",queryUserRole); req.setAttribute("totalPageCount",totalPageCount); try { req.getRequestDispatcher("userlist.jsp").forward(req,resp); } catch (ServletException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //修改用户密码 public void updatePwd(HttpServletRequest req, HttpServletResponse resp){ //从Session里面拿id Object o = req.getSession().getAttribute(Constants.USER_SESSION); String newpassword = req.getParameter("newpassword"); boolean flag=false; System.out.println(o!=null); System.out.println(StringUtils.isNullOrEmpty(newpassword)); if (o!=null&&!StringUtils.isNullOrEmpty(newpassword)){ UserService userService = new UserServiceImpl(); flag=userService.updatePwd(((User) o).getId(),newpassword); if (flag){ req.setAttribute("message","修改密码成功，请退出，使用新的密码登录"); //密码修改成功，移除当前Session req.getSession().removeAttribute(Constants.USER_SESSION); }else { req.setAttribute("message","密码修改失败"); } }else { req.setAttribute("message","新密码有问题"); } try { req.getRequestDispatcher("pwdmodify.jsp").forward(req,resp); } catch (ServletException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //判断旧密码 public void pwdModify(HttpServletRequest req, HttpServletResponse resp){ //从Session里面拿id Object o = req.getSession().getAttribute(Constants.USER_SESSION); String oldpassword = req.getParameter("oldpassword"); //万能Map 存入结果集 Map<String,String> resultMap=new HashMap<String,String>(); if (o==null){ resultMap.put("result","sessionerror"); }else if (StringUtils.isNullOrEmpty(oldpassword)){ //输入密码是否为空 resultMap.put("result","error"); }else{ String userPassword=((User) o).getUserPassword(); if (oldpassword.equals(userPassword)){ resultMap.put("result","true"); }else { resultMap.put("result","false"); } } try { resp.setContentType("application/json"); PrintWriter writer=resp.getWriter(); /*JsonArray 阿里巴巴的JSON工具类 转换格式*/ writer.write(JSONArray.toJSONString(resultMap)); writer.flush(); writer.close(); } catch (IOException e) { e.printStackTrace(); } } //添加用户 public void add(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException { System.out.println("=========add"); //获得前端数据 String userCode = req.getParameter("userCode"); String userName = req.getParameter("userName"); String userPassword = req.getParameter("userPassword"); String gender = req.getParameter("gender"); String birthday = req.getParameter("birthday"); String phone = req.ge