Jax-ws client can be a singleton?

[Matteo Ferrari]

I have to call a webservice using JAX-WS and I have to include a parameter in header of webservice xml. I've used wsimport to generate client classes and now I'm using them in this way (I use MyHandlerResolver to inject parameter in header):

MyServiceService myServiceService = new MyServiceService(url, new QName("http://mysite/service", "MyServiceService"));

	MyHandlerResolver handlerResolver = new MyHandlerResolver();

	myServiceService.setHandlerResolver(handlerResolver);

	MyService myService = myServiceService
			.getMyServicePort();

	((BindingProvider) myService).getRequestContext().put(
			"myParameter", myParameter);
			
	myService.callSomeMethod();

My question is: can MyServiceService be a singleton? Are there issues with concurrent requests? I haven't found any clear answer on this argument. Is there any official documentation about this?
Thanks!

[Tina Smith]

My understanding is yes, and each webservice request will be processed in a separate thread (or thread pool). So you can make the service a singleton but you do need to handle concurrency within your application.

[Tina Smith]

And welcome to the ranch!