In your endpoing class "HelloWorldMarshalledEndpoint", try adding the "@Endpoint" annotation before the class and "@PayloadRoot" annotations before your endpoint methods:
Code:
import org.springframework.ws.server.endpoint.annotation.Endpoint;
import org.springframework.ws.server.endpoint.annotation.PayloadRoot;
@Endpoint
public class myEndPoint{
...
@PayloadRoot(localPart = "getMyRequest", namespace = "http://localhost/ws/helloWorld/schema")
public MyResponse getMyRequest(GetMyRequest request){
...
Adjust the localPart, namespace, MyRequest, MyResponse, getMyRequest, etc for your implementation.