JAX-WS RI：实现方法拦截器的最佳方式

Question

I want to provide my own method interceptor for my webservice invocations. Basically, this method interceptor should be called right before the real method is called... See the snippet below:

public class MyMethodInterceptor {
  public Object invoke(Object t, Method m, Object[] args) throws Throwable {
    // do some magic, such as tracing, authorise, etc...
    return m.invoke(t, args);
  }     
}

// ....    

public class MyWebServiceImpl implements MyWebServiceInterface {
  public String greet(final String name) {
    return "Hi there, " + name;
  }
}

The idea is that everytime that the webservice gets invoked, it will be dispatched through my interceptor. I've looked at hooking up my own InstanceResolver , but it is getting out of control. I know how to do this in CXF and with JAX-RS (Jersey) + Guice.

JAX-WS provides handler-chains , but these handlers get invoked way too early (ie, much before the method invocation), so I do not have the needed information at this point.

What is the best way to do this with the Referene Implementation of JAX-WS?

Answer 1

In a jax-ws handler you are just before the real thing, you have access to the content of entire SOAP message, what you need that isn't available yet?

EDIT:
Some examples, to use in the handler:

public String getMessage(SOAPMessageContext smc) {
    SOAPMessage message = smc.getMessage();
    ByteArrayOutputStream soapEnvelope = new ByteArrayOutputStream();
    message.writeTo(soapEnvelope);
    soapEnvelope.close();
    return new String(soapEnvelope.toByteArray());
}

public String getMethod(SOAPMessageContext smc) {
    SOAPMessage message = smc.getMessage();
    SOAPBody body = message.getSOAPBody();
    return body.getFirstChild().getLocalName();
}