check session value is exit or not in jsp.

<%
String userName = (String) session.getAttribute("email");
if (null == userName) {
   request.setAttribute("Error", "Session has ended.  Please login.");
   RequestDispatcher rd = request.getRequestDispatcher("index.jsp");
   rd.forward(request, response);
}
%>

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