Hi Ian,

Yes, we are still seeing the problem. I've put it aside for the moment, 
hoping to revisit once we upgrade to a new GWT Release Candidate.
Glad to know I'm not the only one suffering from this :)

Cheers
Darren

On Monday, October 10, 2016 at 5:10:08 PM UTC+2, Ian Whyman wrote:
>
> Hi Darren,
>
> We are seeing the same issue, did you find any resolution?
>
> Regards,
>
> Ian
>
> On Thursday, 6 October 2016 08:20:49 UTC+1, Darren Smith wrote:
>>
>> Hi,
>>
>> I am developing a <web-app> that contains within it
>>   - a vanilla HttpServlet
>>   - a GWT RPC Service implementation (RemoteServiceServlet) 
>>
>> I am currently using [GWT2.8rc1].
>>
>> Both servlets manipulate XML documents, and hence make calls to the 
>> following code
>> DocumentBuilderFactory docfactory = DocumentBuilderFactory.newInstance();
>> docfactory.setNamespaceAware(true); 
>>
>> DocumentBuilder builder = docfactory.newDocumentBuilder();   // * problem 
>> here *
>>
>> When I launch the application in Eclipse, using the embedded 
>> Jetty container, the vanilla HttpServlet will fail at the line
>> DocumentBuilder builder = docfactory.newDocumentBuilder();   // * problem 
>> here *
>>
>> The error message is 
>>   java.lang.ClassCastException: 
>> org.apache.xerces.parsers.XIncludeAwareParserConfiguration cannot be cast 
>> to org.apache.xerces.xni.parser.XMLParserConfiguration
>>
>> Having done some research, this exception is typically raised when there 
>> are several Xerces implementations found on the classpath.
>> (I can only see Xerces implementations in gwt-dev and in Eclipse as a 
>> plugin).
>>
>>
>> For the GWT RPC Service implementation, launched as part of the same 
>> <web-app>, the XML document processing works fine - i.e. no exception 
>> raised.
>>
>> If I comment out in the web.xml file the GWT-RPC servlet defintion, then 
>> the vanilla HttpServlet will perform the XML document processing without an 
>> exception.
>>
>>
>> Has anyone encountered similar problems?
>>
>> Darren Smith.
>>
>>
>>

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