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Posted to user@struts.apache.org by "Brett G. Palmer" <pb...@qwest.net> on 2001/06/04 18:35:35 UTC

Null PointerException when run with Apache/SSL/Tomcat

We are getting a NullPionterException which seems to originate from the the
struts-html tag libraries.  The error only occurs when we run Struts with
Tomcat/Apache and SSL.  If we bypass SSL and just go through Apache (port
80) we do not see the error.  Has anyone else seen this problem when running
Struts through SSL?  Any suggestions would be appreciated.  The error
message is shown below.

Thanks in advance for your help.

Brett

/******************** ERROR Message **************************/

Error: 500
Location: /mvelopes05/index.jsp
Internal Servlet Error:

javax.servlet.ServletException
	at
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImp
l.java:459)
	at
_0002findex_0002ejspindex_jsp_1._jspService(_0002findex_0002ejspindex_jsp_1.
java:553)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at
org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.ja
va:130)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja
va:282)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
	at org.apache.tomcat.core.Handler.service(Handler.java:287)
	at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
	at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79
7)
	at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
	at
org.apache.tomcat.service.connector.Ajp13ConnectionHandler.processConnection
(Ajp13ConnectionHandler.java:160)
	at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
	at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
	at java.lang.Thread.run(Thread.java:484)

Root cause:
java.lang.NullPointerException
	at org.apache.struts.taglib.html.LinkTag.hyperlink(LinkTag.java:492)
	at org.apache.struts.taglib.html.LinkTag.doStartTag(LinkTag.java:317)
	at
_0002findex_0002ejspindex_jsp_1._jspService(_0002findex_0002ejspindex_jsp_1.
java:145)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at
org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.ja
va:130)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja
va:282)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
	at org.apache.tomcat.core.Handler.service(Handler.java:287)
	at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
	at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79
7)
	at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
	at
org.apache.tomcat.service.connector.Ajp13ConnectionHandler.processConnection
(Ajp13ConnectionHandler.java:160)
	at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
	at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
	at java.lang.Thread.run(Thread.java:484)

Re: Null PointerException when run with Apache/SSL/Tomcat

Posted by "Brett G. Palmer" <pb...@qwest.net>.

Thanks for everyone's suggestions.  Updating to Struts beta-3 fixed the
problem.  I also tried configuring SSL according the Bugzilla record #992,
but it didn't fix the problem.

Brett



----- Original Message -----
From: "Bryan Field-Elliot" <br...@netmeme.org>
To: <st...@jakarta.apache.org>
Sent: Monday, June 04, 2001 12:24 PM
Subject: Re: Null PointerException when run with Apache/SSL/Tomcat


> I had an extremely similar (though not quite exact) problem last week. I
> posted as you did, but no one responded. This morning, I upgraded from
> Struts beta-1 to beta-3, and so far it appears to have magically fixed
> the SSL problem. Hopefully a similar path will fix yours too.
>
> Good luck,
>
> Bryan
>
> Brett G. Palmer wrote:
>
> >We are getting a NullPionterException which seems to originate from the
the
> >struts-html tag libraries.  The error only occurs when we run Struts with
> >Tomcat/Apache and SSL.  If we bypass SSL and just go through Apache (port
> >80) we do not see the error.  Has anyone else seen this problem when
running
> >Struts through SSL?  Any suggestions would be appreciated.  The error
> >message is shown below.
> >
> >Thanks in advance for your help.
> >
> >Brett
> >
> >/******************** ERROR Message **************************/
> >
> >Error: 500
> >Location: /mvelopes05/index.jsp
> >Internal Servlet Error:
> >
> >javax.servlet.ServletException
> > at
>
>org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextIm
p
> >l.java:459)
> > at
>
>_0002findex_0002ejspindex_jsp_1._jspService(_0002findex_0002ejspindex_jsp_1
.
> >java:553)
> > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
> > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> > at
>
>org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.j
a
> >va:130)
> > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> > at
>
>org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.j
a
> >va:282)
> > at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
> > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
> > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> > at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
> > at org.apache.tomcat.core.Handler.service(Handler.java:287)
> > at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
> > at
>
>org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:7
9
> >7)
> > at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
> > at
>
>org.apache.tomcat.service.connector.Ajp13ConnectionHandler.processConnectio
n
> >(Ajp13ConnectionHandler.java:160)
> > at
> >org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
> > at
>
>org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
> > at java.lang.Thread.run(Thread.java:484)
> >
> >Root cause:
> >java.lang.NullPointerException
> > at org.apache.struts.taglib.html.LinkTag.hyperlink(LinkTag.java:492)
> > at org.apache.struts.taglib.html.LinkTag.doStartTag(LinkTag.java:317)
> > at
>
>_0002findex_0002ejspindex_jsp_1._jspService(_0002findex_0002ejspindex_jsp_1
.
> >java:145)
> > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
> > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> > at
>
>org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.j
a
> >va:130)
> > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> > at
>
>org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.j
a
> >va:282)
> > at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
> > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
> > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> > at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
> > at org.apache.tomcat.core.Handler.service(Handler.java:287)
> > at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
> > at
>
>org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:7
9
> >7)
> > at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
> > at
>
>org.apache.tomcat.service.connector.Ajp13ConnectionHandler.processConnectio
n
> >(Ajp13ConnectionHandler.java:160)
> > at
> >org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
> > at
>
>org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
> > at java.lang.Thread.run(Thread.java:484)
> >
> >
> >
>
>
>

Re: Null PointerException when run with Apache/SSL/Tomcat

Posted by Bryan Field-Elliot <br...@netmeme.org>.

I had an extremely similar (though not quite exact) problem last week. I 
posted as you did, but no one responded. This morning, I upgraded from 
Struts beta-1 to beta-3, and so far it appears to have magically fixed 
the SSL problem. Hopefully a similar path will fix yours too.

Good luck,

Bryan

Brett G. Palmer wrote:

>We are getting a NullPionterException which seems to originate from the the
>struts-html tag libraries.  The error only occurs when we run Struts with
>Tomcat/Apache and SSL.  If we bypass SSL and just go through Apache (port
>80) we do not see the error.  Has anyone else seen this problem when running
>Struts through SSL?  Any suggestions would be appreciated.  The error
>message is shown below.
>
>Thanks in advance for your help.
>
>Brett
>
>/******************** ERROR Message **************************/
>
>Error: 500
>Location: /mvelopes05/index.jsp
>Internal Servlet Error:
>
>javax.servlet.ServletException
>	at
>org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImp
>l.java:459)
>	at
>_0002findex_0002ejspindex_jsp_1._jspService(_0002findex_0002ejspindex_jsp_1.
>java:553)
>	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
>	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>	at
>org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.ja
>va:130)
>	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>	at
>org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja
>va:282)
>	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
>	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
>	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>	at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
>	at org.apache.tomcat.core.Handler.service(Handler.java:287)
>	at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
>	at
>org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79
>7)
>	at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
>	at
>org.apache.tomcat.service.connector.Ajp13ConnectionHandler.processConnection
>(Ajp13ConnectionHandler.java:160)
>	at
>org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
>	at
>org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
>	at java.lang.Thread.run(Thread.java:484)
>
>Root cause:
>java.lang.NullPointerException
>	at org.apache.struts.taglib.html.LinkTag.hyperlink(LinkTag.java:492)
>	at org.apache.struts.taglib.html.LinkTag.doStartTag(LinkTag.java:317)
>	at
>_0002findex_0002ejspindex_jsp_1._jspService(_0002findex_0002ejspindex_jsp_1.
>java:145)
>	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
>	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>	at
>org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.ja
>va:130)
>	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>	at
>org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja
>va:282)
>	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
>	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
>	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>	at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
>	at org.apache.tomcat.core.Handler.service(Handler.java:287)
>	at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
>	at
>org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79
>7)
>	at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
>	at
>org.apache.tomcat.service.connector.Ajp13ConnectionHandler.processConnection
>(Ajp13ConnectionHandler.java:160)
>	at
>org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
>	at
>org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
>	at java.lang.Thread.run(Thread.java:484)
>
>
>