Jsp页面注册与登录

来源：互联网发布：许知远东方历史评论编辑：程序博客网时间：2024/05/15 13:07

用户信息的bean：

package chen;public class UserBean{        private String userid;       private String password;        public void setUserId(String userid)        {                this.userid=userid;        }        public void setPassword(String password)        {                this.password=password;        }        public String  getUserId()        {                return this.userid;        }        public String getPassword()        {                 return this.password;        }}

提交数据库的bean：

package chen;import com.mysql.jdbc.Driver;import java.sql.*;public class UserRegister{        private UserBean userBean;        private Connection con;        //获得数据库连接。        public UserRegister()        {             String url="jdbc:mysql://localhost/"+"chao"+"?user="+"root"+"&password="+"850629";            try            {                Class.forName("com.mysql.jdbc.Driver").newInstance();                        con = DriverManager.getConnection(url);                }                catch(Exception e)                {                        e.printStackTrace();                }        }        //设置待注册的用户信息。        public void setUserBean(UserBean userBean)        {                this.userBean=userBean;        }        //进行注册        public void regist() throws Exception        {                String reg="insert into userinfo(userid,password)  values(?,?)";                try                {                        PreparedStatement pstmt=con.prepareStatement(reg);                        pstmt.setString(1,userBean.getUserId());                        pstmt.setString(2,userBean.getPassword());                        pstmt.executeUpdate();                }                catch(Exception e)                {                        e.printStackTrace();                        throw e;                }        }}

提交注册数据进入数据库：

<%@ page  contentType="text/html;charset=gb2312" pageEncoding="gb2312" import="chen.*" %><jsp:useBean id="userBean" class="chen.UserBean" scope="request"><jsp:setProperty name="userBean" property="*"/></jsp:useBean><jsp:useBean id="regist" class="chen.UserRegister" scope="request"/><html><head><title> 用户信息注册页面</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312"></head><body><%String userid =request.getParameter("userid");String password = request.getParameter("password");userBean.setUserId(userid);userBean.setPassword(password);System.out.println(userid+password);%><% try{  regist.setUserBean(userBean);  out.println(userid);  regist.regist();  out.println("注册成功");}  catch(Exception e){  out.println(e.getMessage());  }%><br><a href="login.jsp">返回</a></body></html>

登陆验证页面：

<%@page import="java.sql.*" contentType="text/html;charset=GB2312" %><%@page import="java.util.*"%><%  String userid1=new String(request.getParameter("userid"));  String password1=new String(request.getParameter("password")); Class.forName("com.mysql.jdbc.Driver"); Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/chao","root","850629"); Statement stmt=con.createStatement(); String sql="select * from  userinfo where userid='"+userid1+"';"; ResultSet rs=stmt.executeQuery(sql);  if(rs.next())  {String password=new String(rs.getString("password"));  if(password.equals(password1))  {session.setAttribute("userid1",userid1);  response.sendRedirect("sucess.jsp");  }  else{response.sendRedirect("login.jsp");}}else{response.sendRedirect("login.jsp");}%>

登陆页面：

<%@ page contentType="text/html; charset=gb2312" %><html><body><form method="get" action="checklogin.jsp"><table><tr><td> 输入用户名：</td><td><input type=text name=userid ></td></tr><tr><td>输入密码：</td><td><input type=password name=password></td></tr><tr><td><input type=submit value=确认></td></tr></table></form><form action="register.jsp"><input type=submit value=注册></form></body></html>

注册页面：

<%@page contentType="text/html; charset=gb2312" language="java" import="java.util.*,java.io.*"%><html><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312"></head><body><center>  <h1>注册新用户</h1>  <form action="adduser.jsp" method=post>  <table border="1" bgcolor="#0099CC">    <tr>      <td>        用户名:        <input type="text" name="userid">      </td>    </tr>    <tr valign="middle">      <td>        密码：        <input type="password" name="password" readonly>      </td>    </tr>    <tr>      <td>        <input type=submit value=提交>      </td>    </tr>  </table>  </form></center></body></html>

登陆成功页面：

<%@page import="java.util.*" contentType="text/html; charset=gb2312" %><%@include file="trans.jsp"%><html><head><title>sucess</title></head><body bgcolor="#ffffff"><h1>登录成功，欢迎您！</h1><%=trans(session.getAttribute("userid1"))%></body></html>