用户表： uid (主键，自动增长) uname upwd
使用分层实现注册。（必做）
使用分层实现登录。（选做）
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>$Title$</title> </head> <script type="text/javascript"> function changeActionToRegister(){ var s = document.getElementById("idForm") s.setAttribute("action", "doRegister.jsp"); } function changeActionToLogin(){ var s = document.getElementById("idForm") s.setAttribute("action", "doLogin.jsp"); } </script> <body> <form id="idForm" method="post"> 用户名:<input type="text" name="username"/> <br> 密码:<input type="password" name="password"/> <br> <input type="submit" onclick="changeActionToLogin()" value="登录"> <input type="submit" onclick="changeActionToRegister()" value="注册"> </form> </body> </html>
<%@ page import="com.bean.lty.UserBean" %> <%@ page import="com.dao.lty.Dao" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> <% UserBean userBean = new UserBean(); String username = request.getParameter("username"); String password = request.getParameter("password"); userBean.setUname(username); userBean.setUpassword(password); Dao dao = new Dao(); int i = dao.UserLogin(userBean); if(i > 0){ HttpSession session1 = request.getSession(); session1.setAttribute("username",username); session1.setAttribute("password",password); request.getRequestDispatcher("success.jsp").forward(request,response); }else{ response.sendRedirect("fail.jsp"); } %> </body> </html>
<%@ page import="com.bean.lty.UserBean" %> <%@ page import="com.dao.lty.Dao" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> <% UserBean userBean = new UserBean(); String username = request.getParameter("username"); String password = request.getParameter("password"); userBean.setUname(username); userBean.setUpassword(password); Dao dao = new Dao(); int i = dao.UesrRegister(userBean); if(i > 0){ HttpSession session1 = request.getSession(); session1.setAttribute("username",username); session1.setAttribute("password",password); request.getRequestDispatcher("ok.jsp").forward(request,response); }else{ response.sendRedirect("error.jsp"); } %> </body> </html>
package com.bean.lty; public class UserBean { private String uname; private String upassword; public UserBean() { } public UserBean(String uname, String upassword) { this.uname = uname; this.upassword = upassword; } public String getUname() { return uname; } public void setUname(String uname) { this.uname = uname; } public String getUpassword() { return upassword; } public void setUpassword(String upassword) { this.upassword = upassword; } }
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> 您已成功注册！注册信息:用户名：<%=request.getSession().getAttribute("username")%> 密码：<%=request.getSession().getAttribute("password")%> </body> </html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> 注册信息不正确，请重新进行注册！！！ </body> </html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> 登录成功！欢迎您,用户名：<%=request.getSession().getAttribute("username")%> 密码：<%=request.getSession().getAttribute("password")%> </body> </html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> 登录失败,用户名不存在！ </body> </html>
