title: How can a Spring Soap interceptor modify the contents of a message?
body: <p>I'm trying to write an interceptor for a web service that will modify the contents of the Soap message before is sent on to the endpoint.  If a client sent a message where the value of some element is 1, I want to be able to alter that element to a 2 so that, when the message arrives at the endpoint, it looks as if the client submitted a 2 instead of a 1.  I'm not sure if this is a difficult task which is elluding me, or an easy task which I am making harder than it needs to be.</p>
  
  <p>I have stepped through some of the Spring interceptors; but the validation and logging interceptors don't every alter the message that is in transit.  The Wss4jSecurityInterceptor does add some properties to the MessageContext; but I haven't been able to leverage anything that it is doing.  I have a shell of an interceptor; but nothing that is doing anything of any value.</p>
  
  <pre><code>public boolean handleRequest(MessageContext messageContext, Object endpoint)
          throws Exception {
  
      SaajSoapMessage saajSoapMessage = (SaajSoapMessage) messageContext
              .getRequest();
      SOAPMessage soapMessage = saajSoapMessage.getSaajMessage();
      SOAPBody soapBody = soapMessage.getSOAPBody();
  
      return true;
  }
  </code></pre>
  
  <p>I was hoping there was a chance that soembody else had already solved this particular problem.  Any insight would be appreciated.  Thanks.</p>