Soap Response Interceptor

[Sally Naga]

Hello,

I consider myself as a beginner in CXF so pardon me if these are naive questions.

We are using CXF to expose a java service/api as a soap webservice. The service works well accepting an incoming soap request, unmarshalling to java objects, exeuting the webmethod and marshalling the xml response.

Now, I have a requirement to intercept the response soapbody, pass the xml to a 3rd party transformer api. The transformer will return new xml and this needs to be replaced and returned as soapbody (instead of the default one generated from return objects).

The pseudo code for the requirement is as follows:
String strResponseBody = GetSoapBodyForResponse();
String strNewResponseBody = thirdPartyTransformer.transform(strResponseBody);
SetOutSoapBodyContent(strNewResponseBody);

I must extract and replace the response soap body in xml format and cannot transform at the java object level.

What phase should this interceptor intercept and in what order? What base interceptor class should be used? What would be the api's to extract and set soap body content for response?

Thank you
Sally

[Daniel Kulp]

This really depends on what your "third party transformer" expects.

If the thirdparty thing expects a DOM or is optimized for a DOM type thing, the easier thing to do is configure in the SAAJOutInterceptor. See:

http://cxf.547215.n5.nabble.com/How-To-Modify-The-Raw-XML-message-of-an-Outbound-CXF-Request-td4659707.html#a4662921

for an example that manipulates things on a DOM level.


If you NEED to do String things, it's a bit more complicated. You'd likely want to create a StringWriter, save that on the message. Wrapper that with an XMLStreamWriter, set that into the
message content saving the original. That would all be in PRE_PROTOCOL I think. Then, in a second interceptor in POST_PROTOCOL, grab those from the message, transform, grab the
original XMLStreamWriter, and copy the events to it. (Use the CXF StaxUtils class to help)


Dan

Post by Sally Naga
Hello,
I consider myself as a beginner in CXF so pardon me if these are naive questions.
We are using CXF to expose a java service/api as a soap webservice. The
service works well accepting an incoming soap request, unmarshalling to
java objects, exeuting the webmethod and marshalling the xml response.
Now, I have a requirement to intercept the response soapbody, pass the xml
to a 3rd party transformer api. The transformer will return new xml and
this needs to be replaced and returned as soapbody (instead of the default
one generated from return objects).
String strResponseBody = GetSoapBodyForResponse();
String strNewResponseBody =
thirdPartyTransformer.transform(strResponseBody);
SetOutSoapBodyContent(strNewResponseBody);
I must extract and replace the response soap body in xml format and cannot
transform at the java object level.
What phase should this interceptor intercept and in what order? What base
interceptor class should be used? What would be the api's to extract and
set soap body content for response?
Thank you
Sally