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From "Bhattacharya, Mousami" <mbhat...@nsf.gov>
Subject File Upload issue with struts 1.1
Date Tue, 24 Jun 2008 18:17:18 GMT
Hi,
We have a web application (using struts 1.1) which works fine on Sun
application server. while migrating the application to weblogic 9.2,
this file upload issue is coming. 
java.lang.ClassCastException:
org.apache.struts.upload.MultipartRequestWrapper

The error occurs in the perform method of the
org.apache.struts.tiles.UrlController class, when its trying to call
requestDispatcher.include.

I think the problem is that UrlController is not unwrapping the Request
from the MultipartRequestWrapper . RequestProcessor does something like
this
// Unwrap the multipart request, if there is one.
if (request instanceof MultipartRequestWrapper) {
request = ((MultipartRequestWrapper) request).getRequest();
}

When I change the UrlController (which is part of the struts1.1 jar ) to
add the above lines ,the fileupload works fine. Is this a bug in struts
1.1 tiles , or has something to do with weblogic [ since the same code
without changes works in sun application server)

stack trace :
java.lang.ClassCastException:
org.apache.struts.upload.MultipartRequestWrapper
at
weblogic.servlet.internal.ServletRequestImpl.getOriginalRequest(ServletR
equestImpl.java:1313)
at
weblogic.servlet.internal.RequestDispatcherImpl.include(RequestDispatche
rImpl.java:328)
at org.apache.struts.tiles.UrlController.perform(UrlController.java:111)
at
org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(Til
esRequestProcessor.java:243)
at
org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(Tiles
RequestProcessor.java:309)
at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:
279)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)



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