1) Create Table using Mysql Server
create table admin(username varchar(50),password varchar(50))
insert into admin values('admin',12345);
2) Create Form in Jsp for login
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<form action="AdminSer" method="post">
<p><input type="text" name="txtuser" placeholder="Enter username" /></p>
<p><input type="password" name="txtpass" placeholder="Enter password" /></p>
<p><input type="submit" name="btnsubmit" value="Login" /> </p>
</form>
</body>
</html>
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class AdminSer extends HttpServlet {
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try (PrintWriter out = response.getWriter()) {
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/java56","root","");
Statement st = con.createStatement();
ResultSet res = st.executeQuery("select * from admin where username='"+request.getParameter("txtuser")+"' and password='"+request.getParameter("txtpass")+"'");
if(res.next())
{
response.sendRedirect("ViewStudent.jsp");
}
else
{
response.sendRedirect("index.jsp?q=invalid userid and password");
}
}
catch(Exception ex)
{
}
}
}
insert into admin values('admin',12345);
2) Create Form in Jsp for login
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<form action="AdminSer" method="post">
<p><input type="text" name="txtuser" placeholder="Enter username" /></p>
<p><input type="password" name="txtpass" placeholder="Enter password" /></p>
<p><input type="submit" name="btnsubmit" value="Login" /> </p>
</form>
</body>
</html>
3) Create Servlet for admin login and write database code
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class AdminSer extends HttpServlet {
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try (PrintWriter out = response.getWriter()) {
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/java56","root","");
Statement st = con.createStatement();
ResultSet res = st.executeQuery("select * from admin where username='"+request.getParameter("txtuser")+"' and password='"+request.getParameter("txtpass")+"'");
if(res.next())
{
response.sendRedirect("ViewStudent.jsp");
}
else
{
response.sendRedirect("index.jsp?q=invalid userid and password");
}
}
catch(Exception ex)
{
}
}
}
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