基于javaWeb的超市管理系统

package com.qf.Servlet; import com.alibaba.druid.util.StringUtils; import com.qf.bean.User; import com.qf.service.UserService; import com.qf.service.impl.UserServiceImpl; 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.lang.reflect.Method; import java.util.List; @WebServlet(name = "UserServlet",urlPatterns = "/user") 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 { request.setCharacterEncoding("utf-8"); //1.接受参数 String str = request.getParameter("method"); try { Class cla = this.getClass(); Method method1 = cla.getDeclaredMethod(str, HttpServletRequest.class, HttpServletResponse.class); method1.invoke(this, request, response); } catch (NoSuchMethodException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } } public void login(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=utf-8"); String name = request.getParameter("name"); String password = request.getParameter("password"); if (StringUtils.isEmpty(name) || StringUtils.isEmpty(password)) { request.setAttribute("msg1", "用户名或密码不能为空"); request.getRequestDispatcher("login.jsp").forward(request, response); } UserService userService = new UserServiceImpl(); User user = userService.findByNameAndPassword(name, password); if (user == null) { request.setAttribute("msg", "用户名或密码错误"); //response.sendRedirect(contextPath+"/pages/user/login.jsp"); request.getRequestDispatcher("login.jsp").forward(request, response); } // System.out.println(user.getState()); request.getSession().setAttribute("userstate", user.getState()); request.getSession().setAttribute("username", user.getName()); System.out.println(user.getName()); request.getRequestDispatcher("admin_index.jsp").forward(request, response); } public void findall(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String username = request.getParameter("username"); String index = request.getParameter("index"); Object power = request.getSession().getAttribute("userstate"); Integer userPower=Integer.parseInt(power.toString()); if (userPower==0){ request.setAttribute("msg", "抱歉，您的权限不足"); request.getRequestDispatcher("state.jsp").forward(request, response); } String uname = null; if (username != null) { uname = username; } int pageindex = 1; if (index != null) { pageindex = Integer.parseInt(index); } int pages = 3; UserService userService=new UserServiceImpl(); int totalcount=userService.totalcounts(uname); int totalPage = totalcount % pages > 0 ? totalcount / pages + 1 : totalcount / pages; List<User> list=userService.findAll(uname,pageindex,pages); request.setAttribute("uname", uname); request.setAttribute("list", list); System.out.println(list.toString()); request.setAttribute("pageindex", pageindex); request.setAttribute("count", totalcount);//总条数 request.setAttribute("pages", totalPage);//总页数 request.getRequestDispatcher("userAdmin.jsp").forward(request, response); } public void add(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String username = request.getParameter("username"); String password = request.getParameter("password"); String repwd = request.getParameter("repwd"); String sex = request.getParameter("sex"); String age = request.getParameter("age"); String mobile = request.getParameter("mobile"); String address = request.getParameter("address"); String auth = request.getParameter("auth"); if (StringUtils.isEmpty(username) || StringUtils.isEmpty(password) || StringUtils.isEmpty(sex)|| StringUtils.isEmpty(age)|| StringUtils.isEmpty(mobile)|| StringUtils.isEmpty(address)|| StringUtils.isEmpty(auth)) { request.setAttribute("msg1", "全部为必填"); request.getRequestDispatcher("userAdd.jsp").forward(request, response); } if (password.equals(repwd)==false){ request.setAttribute("msg3", "两次密码必须一致"); request.getRequestDispatcher("userAdd.jsp").forward(request, response); } User user=new User(null, username, password, sex, Integer.parseInt(age), Integer.parseInt(mobile),address,Integer.parseInt(auth) ); UserService userService=new UserServiceImpl(); userService.adds(user); response.sendRedirect("/user?method=findall"); } public void update(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { UserService userService =new UserServiceImpl(); String did = request.getParameter("did"); String state = request.getParameter("state"); int id=Integer.parseInt(did); int states=Integer.parseInt(state); if (states==1){ User user=new User(id,null,null , null, null, null, null, 0); userService.updatestates(user); response.sendRedirect("/user?method=findall"); }else if (states==0){ User user=new User(id,null,null , null, null, null, null, 1); userService.updatestates(user); response.sendRedirect("/user?method=findall"); } } public void back(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.getSession().removeAttribute("username"); request.getSession().invalidate(); request.getRequestDispatcher("/login.jsp").forward(request, response); } }