ExtensionFilter called multiple times under Weblogic
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Key: MYFACES-347
URL: http://issues.apache.org/jira/browse/MYFACES-347
Project: MyFaces
Type: Bug
Versions: 1.0.9 beta
Environment: Windows 2000 Server, Weblogic 8.1 SP2
Reporter: Dan Zehme
Because of a lack of clarity in some version of the serlvet specification,
Weblogic, unlike Tomcat and JBoss, invoke the servlet filters not only on the
initial request but on forwards and includes through the RequestDispatcher.
This behavior causes the ExtensionFilter to be called multiple times for a
single request causing multiple insertions of the header information or
unnecessary errors indicating that no head or body was found.
The solution to this problem is to set a request attribute indicating that the
filter has been run and just calling chain.doFilter() when that request
attribute is set.
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