PM47776: APPLICATION FAILS WITH CLASSCASTEXCEPTION AND CANNOT DISPLAY THE IMAGES.

8.0.0.2: WebSphere Application Server V8.0 Fix Pack 2
8.0.0.3: WebSphere Application Server V8.0 Fix Pack 3
8.0.0.4: WebSphere Application Server V8.0 Fix Pack 4
8.0.0.5: WebSphere Application Server V8.0 Fix Pack 5
8.0.0.6: WebSphere Application Server V8.0 Fix Pack 6
8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15

APAR status

• Closed as program error.

Error description

• java.lang.ClassCastException:
  com.ibm.websphere.servlet.response.DummyResponse incompatible
  with com.ibm.wsspi.webcontainer.servlet.IExtendedResponse
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  IBM WebSphere Application Server version    *
  *                  8.0 users                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: A java.lang.ClassCastException          *
  *                      might occur when requesting for a       *
  *                      static resource.                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When an application's filter wraps the servlet response object
  of a request for the static resource, the
  java.lang.ClassCastException might occur.   Below is an
  example of the exception stack:
  Caused by: java.lang.ClassCastException:
  com.ibm.websphere.servlet.response.DummyResponse incompatible
  with com.ibm.wsspi.webcontainer.servlet.IExtendedResponse
  at
  com.ibm.ws.webcontainer.servlet.FileServletWrapper.setResponseHe
  aders(FileServletWrapper.java:737)
  at
  com.ibm.ws.webcontainer.servlet.FileServletWrapper.service(FileS
  ervletWrapper.java:618)
  at
  com.ibm.ws.webcontainer.servlet.FileServletWrapper.handleRequest
  (FileServletWrapper.java:472)
  at
  com.ibm.ws.webcontainer.servlet.StaticFileServletWrapperImpl.han
  dleRequest(StaticFileServletWrapperImpl.java:135)
  at
  com.ibm.ws.webcontainer.extension.DefaultExtensionProcessor.hand
  leRequest(DefaultExtensionProcessor.java:747)
  at
  com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(We
  bAppFilterChain.java:125)
  at
  com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebApp
  FilterChain.java:77)
  at
  com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebA
  ppFilterManager.java:919)
  at
  com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters
  (WebAppFilterManager.java:1016)
   ¢â‚¬ ¦......
  

Problem conclusion

• The WebContainer code was modified to handle the class cast
  operation accordingly.
  
  The fix for this APAR is currently targeted for inclusion in
  fixpack 8.0.0.2
  Please refer to the recommended updates page for delivery
  information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels

• R800 PSY

     UP