Hi,
Please follow the below steps to resolve "UnsupportedOperationException: This class does not support SAAJ 1.1" issue.
1. Set classpath to latest saaj-impl.jar in startweblogic.cmd
2. Set the below 2 system properties in code.
System.setProperty("javax.xml.soap.MessageFactory","com.sun.xml.messaging.saaj.soap.ver1_1.SOAPMessageFactory1_1Impl");
System.setProperty("javax.xml.soap.SOAPConnectionFactory","weblogic.wsee.saaj.SOAPConnectionFactoryImpl");
It works for me in weblogic9.2. Let me know if you still face any problem related to "UnsupportedOperationException: SAAJ1.1"
Thanks,
Mani