[opencms-dev] State shared between the JSPs

[Ladislav Kulhanek]

Hi Sankar,
we had a problem with session too, it was due to opencms was running on
Tomcat on context /opencms and we masked it on Nginx server befor Opencms,
so it looked like opencms was running on context /
But session is realized by cookie (which is created by Tomcat) and it looks
like this:

JSESSIONID=4871301FB4E4B60F03CAB5DC5AF5CD4D; Path=/opencms

Cookie has a path set, browser then sends this cookie only with requests
with path which begins with /opencms. But path was masked by Nginx and
request from browser din not have path /opencms. Cookie was not sent and
session did not work. Now we are running OpenCms directly on Tomcat on
context / and session works properly.

Ladislav Kulhanek


2013/1/23 Paul-Inge Flakstad <flakstad at npolar.no>

> Hi again Sankar,****
>
> ** **
>
> OK, I trust it’s not that then. I see you’re passing “false” in your 2ndJSP when you’re getting the session object. You should probably pass “true”
> or nothing all. ****
>
> ** **
>
> Here’s a real example, in use right now on one of our sites. It works like
> a charm.****
>
> ** **
>
> JSP A:****
>
> HttpSession sess = request.getSession(true); // Passing “true” here, even
> though I probably don’t have to****
>
> sess.setAttribute("share", "true"); ****
>
> ** **
>
> JSP B:****
>
> HttpSession sess = request.getSession(); // Note I’m not passing no
> argument here****
>
> if (sess.getAttribute("share") != null &&
> sess.getAttribute("share").equals("true")) {****
>
>                 // Do stuff****
>
> }****
>
> ** **
>
> Please try something like this. Let us know how it goes.****
>
> ** **
>
> Best regards,****
>
> Paul****
>
> ** **
>
> *From:* opencms-dev-bounces at opencms.org [mailto:
> opencms-dev-bounces at opencms.org] *On Behalf Of *Karri Sankar Rao
> *Sent:* 23. januar 2013 12:47
>
> *To:* The OpenCms mailing list
> *Subject:* Re: [opencms-dev] State shared between the JSPs****
>
> ** **
>
> Hi Paul,****
>
>  ****
>
> In both JSP pages, session=”true” in page directives.****
>
>  ****
>
> Thanks,****
>
> Sankar.K****
>
>  ****
>
> *From:* opencms-dev-bounces at opencms.org [
> mailto:opencms-dev-bounces at opencms.org <opencms-dev-bounces at opencms.org>]
> *On Behalf Of *Paul-Inge Flakstad
> *Sent:* Wednesday, January 23, 2013 5:15 PM
> *To:* The OpenCms mailing list
> *Subject:* Re: [opencms-dev] State shared between the JSPs****
>
>  ****
>
> Hi again Sankar,****
>
>  ****
>
> The issue is not related to OpenCms, I assure you. Do you have
> session="true" in your @page directives?****
>
>  ****
>
> Best regards,****
>
> Paul****
>
>  ****
>
> *From:* opencms-dev-bounces at opencms.org [
> mailto:opencms-dev-bounces at opencms.org <opencms-dev-bounces at opencms.org>]
> *On Behalf Of *Karri Sankar Rao
> *Sent:* 23. januar 2013 12:43
> *To:* The OpenCms mailing list
> *Subject:* Re: [opencms-dev] State shared between the JSPs****
>
>  ****
>
> Hi Paul,****
>
>  ****
>
> Thanks for your reply. Here is the code.****
>
> HttpSession sess = request.getSession(true);****
>
> sess.setAttribute("whitePaperRegistrationMailId",regDetails.getEmailId());
> ****
>
> String mailId = (String)sess.getAttribute("whitePaperRegistrationMailId");
> ****
>
> out.println("Mail id is :"+mailId); //This is working fine in same JSP.***
> *
>
>  ****
>
> When I am trying to access from another JSP with the below code, I am
> getting null value.****
>
> HttpSession sess = request.getSession(false);****
>
> String mailId = (String)sess.getAttribute("whitePaperRegistrationMailId");
> ****
>
> out.println("Mail id is :"+mailId); //I am getting null value.****
>
>  ****
>
> I think the problem is with OpenCMS. Does OpenCMS provide any session
> management?****
>
>  ****
>
> Thanks,****
>
> Sankar.K****
>
> *From:* opencms-dev-bounces at opencms.org [
> mailto:opencms-dev-bounces at opencms.org <opencms-dev-bounces at opencms.org>]
> *On Behalf Of *Paul-Inge Flakstad
> *Sent:* Wednesday, January 23, 2013 4:40 PM
> *To:* The OpenCms mailing list
> *Subject:* Re: [opencms-dev] State shared between the JSPs****
>
>  ****
>
> Hi Sankar,****
>
>  ****
>
> You do realize you’re trying to modify a final object in your illustration
> code..?****
>
> final CmsRequestContext requestContext = cmsObject.getRequestContext();***
> *
>
> requestContext.setAttribute("someObj ", someObj);****
>
>  ****
>
> Anyway -- my preferred recipe goes like this:****
>
> // Fetch the session object (don’t use the implicitly available variable
> “session”)****
>
> HttpSession sess = request.getSession(true); // You may or may not want to
> pass the boolean here****
>
> // Then do like this:****
>
> sess.setAttribute(...);****
>
> sess.getAttribute(...);****
>
>  ****
>
> Not forgetting to put session="true" in the @page directive:****
>
> <%@page import=”...” session=”true” % <%25 at page%20import=>>****
>
>  ****
>
> You should also be able to use request.setAttribute(...) and
> request.getAttribute(...) -- just like that, using the implicitly available
> variable “request”. (The stored object will of course live only for as long
> as the request lives.)****
>
>  ****
>
> NOTE: If you’re using flex cache, be aware. It doesn’t always play nice
> with this. It’s supposed to work (if configured correctly) with the session
> approach, but I’ve had to disable flex cache for some of my JSPs where I do
> stuff like this.****
>
>  ****
>
> HTH :)****
>
>  ****
>
> Cheers,****
>
> Paul****
>
>  ****
>
> *From:* opencms-dev-bounces at opencms.org [
> mailto:opencms-dev-bounces at opencms.org <opencms-dev-bounces at opencms.org>]
> *On Behalf Of *Karri Sankar Rao
> *Sent:* 23. januar 2013 11:16
> *To:* opencms-dev at opencms.org
> *Subject:* [opencms-dev] State shared between the JSPs****
>
>  ****
>
> Hi,****
>
>  ****
>
> I am working on OpenCMS application. I am new to OpenCMS.****
>
>  ****
>
> I have one object which I want to keep it in session so that I can use it
> in other JSPs.****
>
> I tried in 2 ways to get this.****
>
> a)      Initially I used JSP implicit variable i.e
> session.setAttribute(“someObj”,someObj). But this session object is not
> available in other JSPs. I am getting null when I try to retrieve using
> session.getAttribute(“someObj”);****
>
> b)      Then I used another approach.****
>
> CmsJspActionElement cms = new CmsJspActionElement(pageContext, request,
> response);****
>
> final CmsObject cmsObject = cms.getCmsObject();****
>
> final CmsRequestContext requestContext = cmsObject.getRequestContext();***
> *
>
> requestContext.setAttribute("someObj ", someObj);****
>
>  ****
>
> I am not sure whether it is in request scope or session scope. When I
> tried to access it in another JSP, getting null value.****
>
>  ****
>
> CmsJspActionElement cms=new CmsJspActionElement(pageContext, request,
> response);****
>
> final CmsObject cmsObject = cms.getCmsObject();****
>
> final CmsRequestContext requestContext = cmsObject.getRequestContext();***
> *
>
> Object obj = requestContext.getAttribute("someObj ");****
>
>  ****
>
> Could you please let me know how to resolve this.****
>
>  ****
>
> Your help is highly appreciated.****
>
>  ****
>
> Thanks,****
>
> Sankar.K****
>
>  ****
>
>  ****
>
>  ****
>
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