I am trying to redirect the user to the main page if session object is null. I am successful when I place my code in my normal jsp page eg. dashboard.jsp but if I remove code from dashboard.jsp and add it to header.jsp, it won't work.
Here is header.jsp
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="">
<meta name="author" content="">
<title>Dashboard</title>
<!-- Bootstrap core CSS -->
<link href="vendor/bootstrap/css/bootstrap.min.css" rel="stylesheet">
<!-- Custom fonts for this template -->
<link href="vendor/font-awesome/css/font-awesome.min.css" rel="stylesheet" type="text/css">
<!-- Plugin CSS -->
<link href="vendor/datatables/dataTables.bootstrap4.css" rel="stylesheet">
<!-- Custom styles for this template -->
<link href="css/sb-admin.css" rel="stylesheet">
</head>
<body class="fixed-nav" id="page-top">
<%
//add header to not cache the page as well as revalidate eveytime before providing access
response.setHeader("Cache-Control", "no-cache,no-store,must-revalidate");
//check if logged in, else redirect to login page
if (session.getAttribute("username") == null) {
response.sendRedirect("index.jsp?login=false");
return;
}
%>
Dashboard.jsp
<jsp:include page="/WEB-INF/partials/header.jsp" />
<jsp:include page="/WEB-INF/partials/navigation.jsp" />
//body content here
<jsp:include page="/WEB-INF/partials/footer.jsp" />
When the code
<%
//add header to not cache the page as well as revalidate eveytime before providing access
response.setHeader("Cache-Control", "no-cache,no-store,must-revalidate");
//check if logged in, else redirect to login page
if (session.getAttribute("username") == null) {
response.sendRedirect("index.jsp?login=false");
return;
}
%>
is added to dashboard.jsp the page is redirected successfully but not when added to header.jsp. Why is it so?
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