Home » Archived » BIRT » Birt2.1.1 problem with Xerces in Weblogic
| Birt2.1.1 problem with Xerces in Weblogic [message #210553] |
Wed, 10 January 2007 20:33  |
Eclipse User |
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The Birt example app WebViewerExample can run correctly in Weblogic8.1.5
and Weblogic9.2.
But if I put Xerces(xml-apis.jar,xercesImpl.jar) into
WebViewerExample\WEB-INF\lib directory, Birt show me
"java.lang.ClassCastException" message. Even i use the same version as
"WebViewerExample\WEB-INF\platform\plugins\org.apache.xerces ",the same
error occured.
How to resolve this problem, for my web application need Xerces jars at
\WEB-INF\lib directory.
There's no this problem in Tomcat.
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| Re: Birt2.1.1 problem with Xerces in Weblogic [message #211006 is a reply to message #210658] |
Thu, 11 January 2007 20:39  |
| Eclipse User |
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Thanks for your help.
I've tried as you say, but it has the same error.
In fact, if I delete the platform/plugins/org.apache.xerces, the same
error occured; and if I delete platform/plugins/org.apache.xerces
directory and delete Xerces lib from WEB-INF/lib also, Birt works correctly.
I surmise that some function cann't use Xerces lib from WEB-INF/lib,it's
some problem about ClassLoader. But I cann't know more about this
problem. How can I resolve this problem? Is it a bug of Birt(or Xerces,
or digester, or other component)?
David Michonneau :
> In fact, BIRT also use Xerces, so adding one more lib in web-inf is
> going to cause some problems. BIRT is using the OSGi classloading to
> load Xerces, so I would suggest you copy the xerces jar lib from the
> platform/plugins dir in the WEB-INF/lib. Normally it should work. Let me
> know if you still have problems.
>
> Thanks,
>
> David
>
>> The Birt example app WebViewerExample can run correctly in
>> Weblogic8.1.5
>> and Weblogic9.2.
>> But if I put Xerces(xml-apis.jar,xercesImpl.jar) into
>> WebViewerExample\WEB-INF\lib directory, Birt show me
>> "java.lang.ClassCastException" message. Even i use the same version as
>> "WebViewerExample\WEB-INF\platform\plugins\org.apache.xerces ",the same
>> error occured.
>> How to resolve this problem, for my web application need Xerces jars
>> at \WEB-INF\lib directory.
>>
>> There's no this problem in Tomcat.
>>
>
>
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| Re: Birt2.1.1 problem with Xerces in Weblogic [message #211168 is a reply to message #211006] |
Fri, 12 January 2007 07:23 |
| Eclipse User |
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Are you using the weblogic.xml from the runtime package? It looks like it's
loading classes from weblogic internal libraries, which conflict with the
BIRT ones. The normal fix is to have prefer-web-inf-classes set to true in
weblogic.xml of the web app.
Thanks,
David
> Thanks for your help.
>
> I've tried as you say, but it has the same error.
>
> In fact, if I delete the platform/plugins/org.apache.xerces, the same
> error occured; and if I delete platform/plugins/org.apache.xerces
> directory and delete Xerces lib from WEB-INF/lib also, Birt works
> correctly.
>
> I surmise that some function cann't use Xerces lib from
> WEB-INF/lib,it's some problem about ClassLoader. But I cann't know
> more about this problem. How can I resolve this problem? Is it a bug
> of Birt(or Xerces, or digester, or other component)?
>
> David Michonneau :
>
>> In fact, BIRT also use Xerces, so adding one more lib in web-inf is
>> going to cause some problems. BIRT is using the OSGi classloading to
>> load Xerces, so I would suggest you copy the xerces jar lib from the
>> platform/plugins dir in the WEB-INF/lib. Normally it should work. Let
>> me know if you still have problems.
>>
>> Thanks,
>>
>> David
>>
>>> The Birt example app WebViewerExample can run correctly in
>>> Weblogic8.1.5
>>> and Weblogic9.2.
>>> But if I put Xerces(xml-apis.jar,xercesImpl.jar) into
>>> WebViewerExample\WEB-INF\lib directory, Birt show me
>>> "java.lang.ClassCastException" message. Even i use the same version
>>> as
>>> "WebViewerExample\WEB-INF\platform\plugins\org.apache.xerces ",the
>>> same
>>> error occured.
>>> How to resolve this problem, for my web application need Xerces jars
>>> at \WEB-INF\lib directory.
>>> There's no this problem in Tomcat.
>>>
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| Re: Birt2.1.1 problem with Xerces in Weblogic [message #211499 is a reply to message #211168] |
Mon, 15 January 2007 01:10 |
| Eclipse User |
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Thanks for your fervor.
The WebViewerExample is a well defined application. The
prefer-web-inf-classes parameter is already exist in the sample.
I think this is a bug, and I've submit a bug report to Birt project.
Please see https://bugs.eclipse.org/bugs/show_bug.cgi?id=170299
David Michonneau :
> Are you using the weblogic.xml from the runtime package? It looks like
> it's loading classes from weblogic internal libraries, which conflict
> with the BIRT ones. The normal fix is to have prefer-web-inf-classes set
> to true in weblogic.xml of the web app.
>
> Thanks,
>
> David
>
>> Thanks for your help.
>>
>> I've tried as you say, but it has the same error.
>>
>> In fact, if I delete the platform/plugins/org.apache.xerces, the same
>> error occured; and if I delete platform/plugins/org.apache.xerces
>> directory and delete Xerces lib from WEB-INF/lib also, Birt works
>> correctly.
>>
>> I surmise that some function cann't use Xerces lib from
>> WEB-INF/lib,it's some problem about ClassLoader. But I cann't know
>> more about this problem. How can I resolve this problem? Is it a bug
>> of Birt(or Xerces, or digester, or other component)?
>>
>> David Michonneau :
>>
>>> In fact, BIRT also use Xerces, so adding one more lib in web-inf is
>>> going to cause some problems. BIRT is using the OSGi classloading to
>>> load Xerces, so I would suggest you copy the xerces jar lib from the
>>> platform/plugins dir in the WEB-INF/lib. Normally it should work. Let
>>> me know if you still have problems.
>>>
>>> Thanks,
>>>
>>> David
>>>
>>>> The Birt example app WebViewerExample can run correctly in
>>>> Weblogic8.1.5
>>>> and Weblogic9.2.
>>>> But if I put Xerces(xml-apis.jar,xercesImpl.jar) into
>>>> WebViewerExample\WEB-INF\lib directory, Birt show me
>>>> "java.lang.ClassCastException" message. Even i use the same version
>>>> as
>>>> "WebViewerExample\WEB-INF\platform\plugins\org.apache.xerces ",the
>>>> same
>>>> error occured.
>>>> How to resolve this problem, for my web application need Xerces jars
>>>> at \WEB-INF\lib directory.
>>>> There's no this problem in Tomcat.
>>>>
>
>
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| Re: Birt2.1.1 problem with Xerces in Weblogic [message #211507 is a reply to message #211222] |
Mon, 15 January 2007 05:18 |
| Eclipse User |
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The WebViewerExample can run with weblogic 8.1.5 without any modify. You
can try it.
shweta kautia :
> Hi,
>
> We are trying to get BIRT211 running with weblogic 8.1.5 and have not
> been able to do so. If possible, please share any special customization
> or configuration that was required to get it working?
>
> Thanks,
> shweta
>
> perseusli wrote:
>> The Birt example app WebViewerExample can run correctly in Weblogic8.1.5
>> and Weblogic9.2.
>> But if I put Xerces(xml-apis.jar,xercesImpl.jar) into
>> WebViewerExample\WEB-INF\lib directory, Birt show me
>> "java.lang.ClassCastException" message. Even i use the same version as
>> "WebViewerExample\WEB-INF\platform\plugins\org.apache.xerces ",the same
>> error occured.
>>
>> How to resolve this problem, for my web application need Xerces jars at
>> \WEB-INF\lib directory.
>>
>> There's no this problem in Tomcat.
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