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What is the difference between:
All three can be used to create webservices in Java.
As of I know JAX-WS is a specification and Axis2 and CXF are implementations, but Java 1.6 has implementation of JAX-WS if I am not wrong.
So one can use Java 1.6 to develop JAX-WS web services without using Axis2 or CXF? Then what is the use of Axis2, CXF?
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CXF has SOAP, REST/HTTP, and its Data Bindings support JAXB 2.0,Aegis, by default it use JAXB 2.0 and more close Java standard specification.. Axis2 supports a wider range of data bindings, including XMLBeans, JiBX, JaxMe and JaxBRI as well as its own native data binding, ADB.
Overview. Apache CXF™ is an open source services framework. CXF helps you build and develop services using frontend programming APIs, like JAX-WS and JAX-RS. These services can speak a variety of protocols such as SOAP, XML/HTTP, RESTful HTTP, or CORBA and work over a variety of transports such as HTTP, JMS or JBI.
Axis2 enables you to easily perform the following tasks: Send SOAP messages. Receive and process SOAP messages. Receive and process JSON messages.
Actually,JAX-WS represents both RESTful and SOAP based web services. One way to think about it is that JAX-RS specializes in RESTful, while JAX-WS allows you more flexibility to choose between either, while at the same time being (in some cases) more complicated to configure. Thank you for simple explanation.
The JAX-WS implementation built into the JDK really is just the basic soap stuff. If you need any of the more complex WS-* things like WS-Security, WS-RM, WS-Policy, etc..., you need to use one of the alternatives like CXF or Metro or Axis2. It can also depend on what you are trying to integrate with. For example, CXF has top notch Spring support as well as very good OSGi support.
CXF also has other things besides just JAX-WS. It has a compliant JAX-RS implementation as well and supports exposing services as both REST and SOAP very well. Has a W3C compliant SOAP/JMS implementation if that type of things is required. Basically, lots of stuff not available from the in-jdk JAX-WS impl.
Also see:
Difference between Apache CXF and Axis
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