Webroot文件夹下: Webroot文件夹下: Index.Jsp <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
用户登录页面 <%=request.getAttribute("msg")!=null?request.getAttribute("msg"):"" %> 我要注册 login_pro.jsp <%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <%@page import="com.king.bean.UserInfo"%> <%@page import="com.king.dao.UserDao"%> <%@page import="com.king.dao.UserDaoImpl"%> <% String username=request.getParameter("username"); String password=request.getParameter("password"); request.setAttribute("username_reg",new String(username.getBytes("iso-8859-1"),"utf-8")); if(username==null||username.trim().equals("")){ request.setAttribute("msg","用户名不能为空!"); request.getRequestDispatcher("index.jsp").forward(request,response); }else if(password==null||password.trim().equals("")){ request.setAttribute("msg","密码不能为空!"); request.getRequestDispatcher("index.jsp").forward(request,response); }else{ UserInfo u=new UserInfo(); u.setUsername(new String(username.getBytes("iso-8859-1"),"utf-8")); u.setPassword(new String(password.getBytes("iso-8859-1"),"utf-8")); UserDao dao=new UserDaoImpl(); boolean flag=dao.loginUser(u); if(flag==true){ request.setAttribute("username",u.getUsername()); request.getRequestDispatcher("userList_pro.jsp").forward(request,response); }else{ request.setAttribute("msg","登陆信息有误,请再次登陆或注册!"); request.getRequestDispatcher("index.jsp ").forward(request,response); } } %> <%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <%@page import="com.king.bean.UserInfo"%> <%@page import="com.king.dao.UserDao"%> <%@page import="com.king.dao.UserDaoImpl"%> <% String username=request.getParameter("username"); String password=request.getParameter("password"); request.setAttribute("username_reg",new String(username.getBytes("iso-8859-1"),"utf-8")); if(username==null||username.trim().equals("")){ request.setAttribute("msg","用户名不能为空!"); request.getRequestDispatcher("index.jsp").forward(request,response); }else if(password==null||password.trim().equals("")){ request.setAttribute("msg","密码不能为空!"); request.getRequestDispatcher("index.jsp").forward(request,response); }else{ UserInfo u=new UserInfo(); u.setUsername(new String(username.getBytes("iso-8859-1"),"utf-8")); u.setPassword(new String(password.getBytes("iso-8859-1"),"utf-8")); UserDao dao=new UserDaoImpl(); boolean flag=dao.loginUser(u); if(flag==true){ request.setAttribute("username",u.getUsername()); request.getRequestDispatcher("userList_pro.jsp").forward(request,response); }else{ request.setAttribute("msg","登陆信息有误,请再次登陆或注册!"); request.getRequestDispatcher("index.jsp ").forward(request,response); } } register.jsp(注册) <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
jsp注册页面 <%=request.getAttribute("msg")!=null?request.getAttribute("msg"):"" %>