How To Modify The Raw XML message of an Outbound CXF Request?

Question

I would like to modify an outgoing SOAP Request. I would like to remove 2 xml nodes from the Envelope\'s body. I managed to set up an Interceptor and get the generated Stri

Answer 1

this one's working for me. It's based on StreamInterceptor class from configuration_interceptor example in Apache CXF samples.

It's in Scala instead of Java but the conversion is straightforward.

I tried to add comments to explain what's happening (as far as I understand).

import java.io.OutputStream

import org.apache.cxf.binding.soap.interceptor.SoapPreProtocolOutInterceptor
import org.apache.cxf.helpers.IOUtils
import org.apache.cxf.io.CachedOutputStream
import org.apache.cxf.message.Message
import org.apache.cxf.phase.AbstractPhaseInterceptor
import org.apache.cxf.phase.Phase

// java note: base constructor call is hidden at the end of class declaration
class StreamInterceptor() extends AbstractPhaseInterceptor[Message](Phase.PRE_STREAM) {

  // java note: put this into the constructor after calling super(Phase.PRE_STREAM);
  addBefore(classOf[SoapPreProtocolOutInterceptor].getName)

  override def handleMessage(message: Message) = {
    // get original output stream
    val osOrig = message.getContent(classOf[OutputStream])
    // our output stream
    val osNew = new CachedOutputStream
    // replace it with ours
    message.setContent(classOf[OutputStream], osNew)
    // fills the osNew instead of osOrig
    message.getInterceptorChain.doIntercept(message)
    // flush before getting content
    osNew.flush()
    // get filled content
    val content = IOUtils.toString(osNew.getInputStream, "UTF-8")
    // we got the content, we may close our output stream now
    osNew.close()
    // modified content
    val modifiedContent = content.replace("a-string", "another-string")
    // fill original output stream
    osOrig.write(modifiedContent.getBytes("UTF-8"))
    // flush before set
    osOrig.flush()
    // replace with original output stream filled with our modified content
    message.setContent(classOf[OutputStream], osOrig)
  }
}