We create such client which will set target address info and binding info in RequestContext of BindingProvider.
String mtom11URL = "http://localhost:9080//MyBusiness/MTOM11Service"; MTOMInterface port = null; BindingProvider bp = null; System.out.println("Looking up SOAP 1.1 MTOM service"); QName serviceName = new QName("http://shengym.com/MyBusiness/","MTOM11Service"); QName portName = new QName("http://shengym.com/MyBusiness", "MTOM11Port"); // Setup the necessary JAX-WS artifacts Service svc = Service.create(serviceName); port = svc.getPort(portName, MTOMInterface.class); // Set the target URL bp = (BindingProvider) port; Map<String, Object> requestCtx = bp.getRequestContext(); requestCtx.put(BindingProvider.ENDPOINT_ADDRESS_PROPERTY,mtom11URL); // Enable MTOM SOAPBinding binding = (SOAPBinding) bp.getBinding(); binding.setMTOMEnabled(true); However, it reports such error: javax.xml.ws.WebServiceException:Port {http://shengym.com/MyBusiness/} MTOM11Port not found. org.apache.cxf.jaxws.ServiceImpl.getPort(ServiceImpl.java:332) org.apache.cxf.jaxws.ServiceImpl.getPort(ServiceImpl.java:323) javax.xml.ws.Service.getPort(Service.java:134) I know that the added following code can fix this error: svc.addPort(portName, SOAPBinding.SOAP11HTTP_MTOM_BINDING, mtom11URL); Well, this error should not report even the addPort method is not called. I know the added check in ServiceImpl is to avoid run time error and report it as early as possible. But I think it is not needed. The reasons are: 1. User can get run time error later; 2. User can set target addess info and bind info in other ways (as my example shows) I remove the check from the ServiceImpl then my client code works well.