This is login Filter in servlet.


import java.util.*;
import javax.servlet.http.*;
import javax.servlet.*;
import java.io.*;
import java.sql.*;
public class Filt implements Filter
{
FilterConfig fcg;
public void init(FilterConfig f)
{
fcg=f;
}
public void doFilter(ServletRequest req,ServletResponse res,FilterChain ch)throws IOException,ServletException
{
PrintWriter out=res.getWriter();
res.setContentType("text/html");
try
{

String name=req.getParameter("name");
String pass=req.getParameter("pass");
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","navjyoti","jyoti7");
PreparedStatement pst=con.prepareStatement("select * from employee where password=?");
pst.setString(1,pass);
 ResultSet rs=pst.executeQuery();
            if(rs.next())
            {
//out.println("welcome:'"+name+"'");
                //RequestDispatcher rd=req.getRequestDispatcher("login.do");
                //rd.include(req,res);
ch.doFilter(req,res);
}
else
{
out.println("invalid username&password"+name);
                RequestDispatcher rd=req.getRequestDispatcher("index.html");
                rd.include(req,res);
}

}
catch(Exception e)
{
System.out.println(e);
}

}
public void destroy()
{
}
}

Popular posts from this blog

Simple Sign up design. Android.

Image
<?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     app:layout_behavior="@string/appbar_scrolling_view_behavior"     tools:context=".Signup"     tools:showIn="@layout/activity_signup">     <ScrollView         android:layout_width="fill_parent"         android:layout_height="fill_parent"         android:fillViewport="true"         tools:ignore="MissingConstraints">     <LinearLayout         android:layout_width="fill_parent"         android:layout_height="fill_parent"         android:orientation="vertic
Read more

Cart page design in android.

Image
<?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     app:layout_behavior="@string/appbar_scrolling_view_behavior"     tools:context=".Cart"     tools:showIn="@layout/activity_cart">     <LinearLayout         android:id="@+id/activity_cart_list"         xmlns:android="http://schemas.android.com/apk/res/android"         xmlns:tools="http://schemas.android.com/tools"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:orientation="vertical"         android:weightSu
Read more

Set Date on jDateChooser and retrieve record from database.

 d5  = ((JTextField)jDateChooser1.getDateEditor().getUiComponent()).getText();         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Calendar c = Calendar.getInstance();         try {             c.setTime(sdf.parse(d5));         } catch (ParseException ex) {             Logger.getLogger(Commity.class.getName()).log(Level.SEVERE, null, ex);         } c.add(Calendar.MONTH, 1);  // number of days to add d5 = sdf.format(c.getTime()); System.out.println(""+d5);         try {             java.util.Date date = new SimpleDateFormat("yyyy-MM-d").parse(String.valueOf(d5));             jDateChooser1.setDate(date);                    } catch (ParseException ex) {             Logger.getLogger(Commity.class.getName()).log(Level.SEVERE, null, ex);         }         try         {     Class.forName("com.mysql.jdbc.Driver");     java.sql.Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3305/commity",
Read more