Re: Null Pointer exception when using struts html tag library injspfile

[Deepesh Nandal <de...@eth.net>]

Try creating a new context with the blank struts application,which you said 
is working fine, and run the jsp there. Something seems to be missing or not 
properly configured ,I had a similar problem last year when I accidently 
mixed the config files of version 1.1 and 1.2

Deepesh Nandal.

----- Original Message ----- 
From: "Archana Soni" <ar...@ebizportals.com>
To: "Struts Users Mailing List" <us...@struts.apache.org>
Sent: Friday, September 23, 2005 9:56 AM
Subject: RE: Null Pointer exception when using struts html tag library 
injspfile


> MC,
>
> Actually, the jsp page is referring a page within my application. For
> testing purpose, I tried with an absolute URL and I sent U that changed 
> jsp.
> Anyways, I noted that anything between the <html> tags is not affecting
> b'coz even after removing the complete body and just leaving (<%@
> taglib....) with an empty body, I am still getting the 
> NullPOinterException.
> So I guess there is something wrong happening when jsp page is invoked 
> thru
> the struts framework and that too only when html taglibrary is used.
>
> -Archana
>
>
> -----Original Message-----
> From: Murray Collingwood [mailto:murray@focus-computing.com.au]
> Sent: Thursday, September 22, 2005 6:11 PM
> To: Struts Users Mailing List
> Subject: RE: Null Pointer exception when using struts html tag library
> in jsp file
>
>
> Hi Archana
>
> Try changing your html:link page to href.  ie From:
>
>   <html:link page="http://yahoo.com">Yahoo </html:link>
>
> to
>
>   <html:link href="http://yahoo.com">Yahoo </html:link>
>
>
>>>From what I gather the 'page'  parameters refers to a page within your
> application.  You
> should use the 'href' parameter to refer to a URI.
>
> I've never found any good documentation on the use of various taglib
> parameters,
> maybe somebody else on this list could point us in the right direction.
>
> PS If you leave the taglib statement in and take out the html:link 
> commands
> do you still
> get the NullPointer error?
>
> Also, because these URIs are external to the application there is nothing 
> to
> stop you
> using a simple html anchor <a href=...>link</a>.  The use of the html 
> taglib
> is only
> really necessary when referring to elements within your application.
>
> Kind regards
> mc
>
>
>
> On 22 Sep 2005 at 10:14, Archana Soni wrote:
>
>> This is my Welcome.jsp file content
>>
>>
>>
>> <%@ taglib uri="/tags/struts-html" prefix="html" %>
>>
>> <html:html locale="true">
>>
>> <table align="center" cellspacing="2"cellpadding="5" border="0" >
>> <tr><th> Welcome </th></tr>
>> </table>
>>
>> <table align="center" cellspacing="2"cellpadding="5" border="0"
>> bgcolor="#cbe3ed">
>> <tr>
>> <td><b><font face="verdana" size="2">
>> <html:link page="http://yahoo.com">Yahoo </html:link>
>> </font></b></td>
>>
>> <td><b><font face="verdana" size="2">
>> <html:link page="http://rediff.com">Rediff</html:link>
>> </font></b></td>
>> </tr>
>> </table>
>>
>> </html:html>
>>
>>
>> The application is working fine with just omitting the first line of the
> jsp
>> ( <%@ taglib ...). But as soon as I add it, it gives the
>> NullPointerexception
>>
>> -----Original Message-----
>> From: Murray Collingwood [mailto:murray@focus-computing.com.au]
>> Sent: Wednesday, September 21, 2005 5:14 PM
>> To: Struts Users Mailing List
>> Subject: RE: Null Pointer exception when using struts html tag library
>> in jsp file
>>
>>
>> Can you post your jsp form?
>>
>> On 21 Sep 2005 at 17:12, Archana Soni wrote:
>>
>> > Global-forwards are not necessary to be defined. It will work even
> without
>> > it. And the URL pattern can be anything (even other than *.do).
> Important
>> is
>> > that it should be mapped with some servlet name.
>> >
>> > So I guess changing these will not have any impact. Still I did the
>> > correction you suggested. And I am still getting same error.
>> >
>> >
>> > -----Original Message-----
>> > From: Murray Collingwood [mailto:murray@focus-computing.com.au]
>> > Sent: Wednesday, September 21, 2005 4:21 PM
>> > To: Struts Users Mailing List
>> > Subject: RE: Null Pointer exception when using struts html tag library
>> > in jsp file
>> >
>> >
>> > struts-config.xml
>> > Global-forwards are the application entry points.  You don't have any
>> > defined.  Mine
>> > look like this:
>> >   <global-forwards>
>> >     <forward name="Home" path="/Home.do" />
>> >     <forward name="Setup" path="/Setup.do" />
>> >   </global-forwards>
>> >
>> > web.xml
>> > Your servlet mapping is weird, normally you would specify something
> like:
>> >   <servlet-mapping>
>> >     <servlet-name>action</servlet-name>
>> >     <url-pattern>*.do</url-pattern>
>> >   </servlet-mapping>
>> >
>> > Maybe, I'm still thinking in Struts 1.2.7 (having not used 1.1).
>> >
>> > Have you looked at some example 1.1 applications?  I started with one
> from
>> > JohnTopley, it's a good starting point for getting something running 
>> > and
>> > then you can
>> > grow from there.  Try this:
>> > http://www.sitepoint.com/article/struts-first-steps
>> >
>> > Kind regards
>> > mc
>> >
>> >
>> >
>> > On 21 Sep 2005 at 15:06, Archana Soni wrote:
>> >
>> > > I am attaching my web.xml and struts-config.xml files
>> > >
>> > >
>> > >
>> > > -----Original Message-----
>> > > From: Murugesan, Kathiresan (Cognizant)
>> > > [mailto:Kathiresan.Murugesan@cognizant.com]
>> > > Sent: Wednesday, September 21, 2005 12:37 PM
>> > > To: Struts Users Mailing List
>> > > Subject: RE: Null Pointer exception when using struts html tag 
>> > > library
>> > > in jsp file
>> > >
>> > >
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