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<--------index.jsp--------->
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="validateuser.jsp" method="POST">
username - <input type="text" name="userName">
password - <input type="password" name="passWord">
<input type="submit" value="Submit">
<input type="reset" value="Reset">
</form>
</body>
</html>
<----------validateuser.jsp--------->
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@page import="java.util.*" %>
<%@page import="java.util.HashMap" %>
<%@page import="java.util.Collections" %>
<jsp:useBean id="idHandler" class="com.mycompany.login.Login" scope="request">
<jsp:setProperty name="idHandler" property="*"/>
</jsp:useBean>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head></head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<body>
<%
String userName = request.getParameter("USER_NAME");
String passWord = request.getParameter("PASSWORD");
if (idHandler.authenticate(userName, passWord)){
System.out.println("login is successfull");
//} else {
//response.sendRedirect("retry.jsp");
}
%>
</body>
</html>
<-----------Login.java--------->
package com.mycompany.login;
import java.sql.*;
import java.io.*;
public class Login {
//default constructor
public Login(){}
//method for the catabase connection
public Connection getConnection()
throws IOException{
Connection conn = null;
try{
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection(
"jdbc:mysql:@localhost:3036:anantha",
"root",
"buser");
}
catch(SQLException e)
{
System.out.println("SQLException: " + e.getMessage());
while((e = e.getNextException()) != null)
System.out.println(e.getMessage());
}
catch(ClassNotFoundException e)
{
System.out.println("ClassNotFoundException: " + e.getMessage());
}
return conn;
}
//method that is called from validateuser.jsp and this checks for the authentic user and
public boolean authenticate(String user, String pass)
throws SQLException, IOException{
String Username = null;
String Password = null;
Login dbconn = new Login();
Statement stmt = dbconn.getConnection().createStatement();
String sql = "SELECT USER_NAME,PASSWORD FROM userlogin WHERE USER_NAME='" + user + "'" + "AND PASSWORD='" + pass + "'";
ResultSet rs = stmt.executeQuery(sql);
if(rs.next()){
Username = rs.getString("USER_NAME");
Password = rs.getString("PASSWORD");
}
if(Username != null && Password != null && user.equals(Username) && pass.equals(Password)){
return true;
}
else return false;
}
}
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