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Message-ID: <4A4E2862.1060702@pidster.com>
Date: Fri, 03 Jul 2009 16:48:50 +0100
From: Pid <p@pidster.com>
Reply-To: p@pidster.com
Organization: Pid Inc
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To: Tomcat Users List <users@tomcat.apache.org>
Subject: Re: Http Session Null issue
References: <54044a7e0907030625j7df32a87tbb0725a31aefadf8@mail.gmail.com>
	 <4A4E096E.3060006@pidster.com>
 <54044a7e0907030718u19ece7c1ued1ca5e403d6cedb@mail.gmail.com>
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On 3/7/09 15:18, Achal Patel wrote:
> Its basically below:
>
> HttpSession session = request.getSession();
> Settings settings = (Settings) session.getAttribute(ATTR_NAME);
>
> I debugged it and got to know that session is getting null and again
> invoking the same resource from UI serves fine.
> The same is working fine on Weblogic.

Are you sure? The stack trace seems to say that something in 
Settings.java, at line 102 is null.

How and when is the object initialised?

p


> Regards,
> Achal.
>
> On Fri, Jul 3, 2009 at 7:06 PM, Pid<p@pidster.com>  wrote:
>
>> On 3/7/09 14:25, Achal Patel wrote:
>>
>>> Hi,
>>>
>>> I am facing strange issue with Tomcat 6 Jsp deployment.
>>> I have JSP pages deployed which internally performs operations and
>>> generates
>>> XML response which will be parsed using XSL and then finally displayed on
>>> the UI.
>>> Now when I invoke JSP pages from UI, session is getting null between the
>>> requests and this works perfectly fine on other Weblogic/Websphere App
>>> servers.
>>> We do use taglibs in xsl and JSPs.
>>>
>>> JDK version : 1.5.13
>>> Tomcat Ver: 6.0.18
>>>
>>> This error is again random but comes frequently even for the same page 2
>>> times out of 5 clicks.
>>> Any help on this will be useful, thanks.
>>>
>>> Posting the error message here for more info:
>>>
>>> org.apache.jasper.JasperException: java.lang.NullPointerException
>>>
>>>   org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
>>>
>>>   org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
>>>
>>>
>>>   org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
>>>         org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
>>>         javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
>>>
>>> *root cause*
>>>
>>> java.lang.NullPointerException
>>>         com.teradata.x2.context.Settings.getSettings(Settings.java:102)
>>>
>>>   com.teradata.x2.context.ServletProcessContext.getSettings(ServletProcessContext.java:38)
>>>
>> It's probably not that random.
>>
>> What is at Settings.java, line 102?
>>
>> p
>>
>>
>>
>>>   com.teradata.ui.web.common.HTMLComponent.getSettings(HTMLComponent.java:76)
>>>
>>>   com.teradata.ui.web.common.StyleSheetLink.doInline(StyleSheetLink.java:237)
>>>
>>>   com.teradata.ui.web.common.StyleSheetLink.prepareHTMLString(StyleSheetLink.java:170)
>>>
>>>
>>>   com.teradata.ui.web.common.HTMLComponent.toHTMLString(HTMLComponent.java:91)
>>>
>>>   com.teradata.ui.web.taglib.BodyTagBase.doEndTag(BodyTagBase.java:65)
>>>
>>>   org.apache.jsp.bcm.framework.tableeditor.tableeditor_jsp._jspx_meth_td_005fstylesheet_005f0(tableeditor_jsp.java:201)
>>>
>>>
>>>   org.apache.jsp.bcm.framework.tableeditor.tableeditor_jsp._jspService(tableeditor_jsp.java:99)
>>>         org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>>>         javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
>>>
>>>
>>>   org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
>>>
>>>   org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
>>>         org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
>>>
>>>         javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
>>>
>>> Regards,
>>> Achal.
>>>
>>>
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