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The generated code now adds some JAXB 2.1 specific annotations like @XmlSeeAlso. Thus, the code will not work with previous versions of CXF/JAX-WS.

java2wsdl tool is gone

The java2wsdl tool was replaced with the java2ws tool which provides much more flexibility. Add the -wsdl flag to java2ws if you just need the wsdl.

Runtime changes

ASM jar

The JAX-WS frontend now "requires" asm 2.x or 3.x to be able to process some of the JAXB annotations on the SEI interface. If you don't use those annotations on the SEI, or if you have generated wrapper classes (either via wsdl2java or java2ws with -wrapperbean flag), you can remove the asm jar. If you leave asm jar, there can be conflicts with other apps that use asm. The predominant one is Hibernate. The "workaround" for Hibernate is to remove the asm 1.x jar they use and replace the cglib jar with the cglib-nodeps jar that includes a special internal version of asm that would not conflict with the 2.x/3.x version we need.

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2.1 supports JDK 1.6 update 4 and later as update 4 includes the 2.1 versions of the JAX-WS API jar and the 2.1 version of the JAXB api jar and runtime. To use 2.1 with 1.6 up to update 3, you will need to add the jaxws-api jar and jaxb jars to the jre/lib/endorsed directories. You don't need to do anything special for JDK 1.5.

Aegis configuration

The configuration for the Aegis runtime has changed. See http://cwiki.apache.org/CXF20DOC/introduction-to-aegis-21.html for descriptions of the changes.