you must created table with name admin with attribute name and pass,then copy this code and enjoy the login form using jsp.
code for form in html and css
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package StudentSystem;
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.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
*
* @author Faraz
*/
@WebServlet(name = "LoginServlet", urlPatterns = {"/LoginServlet"})
public class LoginServlet extends HttpServlet {
/**
* Processes requests for both HTTP <code>GET</code> and <code>POST</code>
* methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
Connection conn=null;
String image=null;
String name=null;
String occup=null;
String batch=null;
ResultSet rs;
String uname=request.getParameter("name");
String pass=request.getParameter("pass");
try {
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException ex) {
Logger.getLogger(SaveStudentServlet.class.getName()).log(Level.SEVERE, null, ex);
}
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/student_data","root","badmash");
String sql="select * from admin where name='"+uname+"' and pass='"+pass+"' ";
//String sql2="insert into student (id,fname) values (5,'zeeshan')";
rs= conn.createStatement().executeQuery(sql);
boolean status=rs.next();
if(status==true){
image=rs.getString("image");
name=rs.getString("name");
occup =rs.getString("occupation");
batch =rs.getString("batch");
Admin ad=new Admin(name,occup,batch,image);
AdminCopy.setAbo(ad);
request.setAttribute("admin", ad);
request.getRequestDispatcher("dashboard.jsp").forward(request, response);
}
else{
request.setAttribute("error","Username/Password Incorrect");
request.getRequestDispatcher("login.jsp").forward(request, response);
}
} catch (SQLException ex) {
Logger.getLogger(SaveStudentServlet.class.getName()).log(Level.SEVERE, null, ex);
}
finally{
try {
conn.close();
} catch (SQLException ex) {
Logger.getLogger(SaveStudentServlet.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}
code for handling request coming from this form after clicking the submut button.
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package StudentSystem;
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.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
*
* @author Faraz
*/
@WebServlet(name = "LoginServlet", urlPatterns = {"/LoginServlet"})
public class LoginServlet extends HttpServlet {
/**
* Processes requests for both HTTP <code>GET</code> and <code>POST</code>
* methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
Connection conn=null;
String image=null;
String name=null;
String occup=null;
String batch=null;
ResultSet rs;
String uname=request.getParameter("name");
String pass=request.getParameter("pass");
try {
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException ex) {
Logger.getLogger(SaveStudentServlet.class.getName()).log(Level.SEVERE, null, ex);
}
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/student_data","root","badmash");
String sql="select * from admin where name='"+uname+"' and pass='"+pass+"' ";
rs= conn.createStatement().executeQuery(sql);
boolean status=rs.next();
if(status==true){
image=rs.getString("image");
name=rs.getString("name");
occup =rs.getString("occupation");
batch =rs.getString("batch");
Admin ad=new Admin(name,occup,batch,image);
AdminCopy.setAbo(ad);
request.setAttribute("admin", ad);
request.getRequestDispatcher("dashboard.jsp").forward(request, response);
}
else{
request.setAttribute("error","Username/Password Incorrect");
request.getRequestDispatcher("login.jsp").forward(request, response);
}
} catch (SQLException ex) {
Logger.getLogger(SaveStudentServlet.class.getName()).log(Level.SEVERE, null, ex);
}
finally{
try {
conn.close();
} catch (SQLException ex) {
Logger.getLogger(SaveStudentServlet.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}
