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I get an UnsupportedOperationException “This class does not support SAAJ 1.1” when I use SAAJ under WebLogic 10. What can I do about it?

April 26, 2017saaj unsupportedoperationexception WebLogic

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I get an UnsupportedOperationException “This class does not support SAAJ 1.1” when I use SAAJ under WebLogic 10. What can I do about it?

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Weblogic 10 ships with two SAAJ implementations. By default the buggy 9.x implementation is used (which lives in the package weblogic.webservice.core.soap), but there is a new implementation, which supports SAAJ 1.3 (which lives in the package weblogic.xml.saaj). By looking at the DEBUG logging when Spring Web Services starts up, you can see which SAAJ implementation is used.