Servlets :: Disabling Cookies In Firefox Does Not Create Session

Mar 4, 2014

I'm experimenting the basic concepts of Servlet technology with my below simple setup.

I have a welcome.jsp defined under webContent in eclipse and my welcome.jsp looks like

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1" [b]session="false"[/b]%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

[Code] ....

Now I have few questions based on the above setup

1) As you see session="false" in jsp, and when I used scriptlet like <%= request.getSession(false) %>, I see "null" being printed but if I use pageContext.request.session.id, the session is not null. How does session = "false" influences scriptlets and implicit objects and why the behavior is different

2) If session really exists, even when session=false is used, when I disabled cookies in FireFox browser and click on "click Me" hyperlink, the control goes to Controller, but in the servlet, I see 'No Session Created" being displayed. Which means session was not created and probably because I used false is getSession(false). But if I enable cookies, with the same setup, I get Session ID = << some value>> being printed and this is same as the session what printed through pageContext.request.session.id in the jsp.

So when cookies disabled, how can pageContext.request.session.id actually printed session id , but not in servlet and when cookies enabled, the same session id is displayed in both cases.

My question is why there is no impact in jsp, when cookies are disabled.

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How can i create a session when i loged in and how can i invalid it when i logout?

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package httpServlets;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Date;
import javax.servlet.ServletException;
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[code]....

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I have traced the firefox browser using httpfox and the result was the first HTTP request was done using POST correctly but after redirect the browser send GET.

This problem appears with FireFOx and IE but doesnot appear with google chrome.

index.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="myTags" tagdir="/WEB-INF/tags" %>
<html>
<head>
<title>Welcome Page</title>
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[Code] ......

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Nov 5, 2014

I am using servlet 2.4 I used the ff. code below to set httponly in my application's cookies but it did not work. When I do a javascrip alert (document. cooke) in my page, the session id still shows up.

Cookie [] cookies = request.getCookies();
for(int x=0; x<cookies.length; x++){
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I also tried doing this and it wouldn't work too

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Jan 11, 2015

I am getting following exception.

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java.io.NotSerializableException: org.apache.tomcat.jdbc.pool.DisposableConnectionFacade
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1183)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1508)

[Code] .....

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</head>
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[code]....

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[Code] ....

Every now and then while debugging I lose session attributes:

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[Code] ....

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I attached an image of what menu object looks like.

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[Code] .....

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[Code] ....

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@EJB
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@EJB
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[code]....

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[Code] ....

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