[jboss-user] [JBossWS] - Re: Duplicate SOAP body/envelope tags in SOAP message

[jopere]

I succeeded in calling a web service, from a web  service.  However, I'd really like someone out there who knows what they are doing to show me how to do this correctly.  I am sure there is a better way than what I did.

This is how I got it to work:

1.  Create web service B as a stateless session bean web service using wstools to create artifacts (ejb 2.1).  Deployed web service.

2.  Create web service A as a stateless session bean using wscompile to generate web service artifacts.  Copied WSDL from web service B and used wscompile to create client artifacts.  However, I don't ever use the generated stub/service/serializer classes, because when I do, I get a SOAP message with duplicate body/envelope tags.  What I do is create my own SOAP message using a SOAPMessageFactory.  Then I added namespacese, attributes and elements to the message so it complies with the WSDL.  Next I create a connection and call the web service.  When the message returns I parse it, retrieve the return value and pass it back to the client.

3.  Create a web client that calls web service A.  Web service A calls web service B, which returns a value to A, which returns a value to the client.

So, web service A is both a server to the web client and a client to web service B.  Web service A recieves the SOAP message from the web client and immediately calls web service B.  Here is the code in web service A that calls web service B:

SOAPConnectionFactory scf = SOAPConnectionFactory.newInstance();
SOAPConnection connection = scf.createConnection();
MessageFactory msgFactory = MessageFactory.newInstance();

// Create a message
SOAPMessage msg = msgFactory.createMessage();

// Create an envelope in the message
SOAPEnvelope envelope = msg.getSOAPPart().getEnvelope();
            
// Bind ns0 namespace
envelope.addNamespaceDeclaration("ns0","http://aaa/bbb/1.0");

// Get hold of the the body
SOAPBody body = envelope.getBody();
 
body.addChildElement(envelope.createName("ns0:getGreeting", "", ""))
 .addAttribute(envelope.createName("ns0"), "http://aaa/bbb/1.0");

URL endpoint = new URL("http://localhost:8082/ws/getGreeting");

msg.saveChanges();

// Make call to web service
SOAPMessage soapMessage = connection.call(msg, "http://localhost:8082/ws/getGreeting");

soapMessage.writeTo(System.out);
            
// The return value is in the grandchild element to the body tag.
Iterator it = soapMessage.getSOAPBody().getChildElements();
SOAPElement child = it.next();
Iterator it2 = child.getChildElements();
SOAPElement result = it2.next();
              
responseMessage = result.getValue();

As I said, there has to be an easier way to do this.  If someone could show me a simpler way to call a web service from a web service, I'd appreciate it.

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