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JAX-WS and RPC

843833Feb 28 2007 — edited Sep 11 2007
Hi all,

I just started doing some development using Java Web Services. I would like to write a Web Service Client to a RPC based Web Service.

Now from Goolging, I believe JAX-RPC has been superseded by JAX-WS; and that JAX-WS does not support RPC type of Web Services.

Is that correct?

If so, what is the new model of Web Service? I like to know this so that I can potentially modify the actual Web Service to not use RPC.

Another question. Whatever this new model of Web Service that JAX-WS like, do other technologies support it? E.g., .NET?

Thanks.

Hon Hwang.

Comments

jwenting
there are 2 programming models for web services: RPC and document centric.

JAX-RPC (as the name suggests) is RPC centric.
JAX-WS is document centric.

They're not mutually exclusive, and a standards compliant library (which AFAIK JAX-WS is) will allow both.

So while you cannot use classes created for JAX-RPC with JAX-WS, you can do the same things with both (the programming model to achieve those things is just a bit different).
843833
JAX-WS does not support rpc/encoded. JAX-WS is WS-I Basic Profile conformant for Web Services Interoperability which mandates literal mode only and supports document/literal and rpc/literal modes.

JAX-WS is more document centric.

Yes, you can modify the webservice that is rpc/encoded to be document/literal or rpc/literal.
843833
This is not true, you can create rpc/encoded web services by adding this annotation:

@SOAPBinding(style = Style.RPC, use = Use.ENCODED)
843833
You can only do that with JAX-RPC, JAX-WS does not support rpc/encoded.
843833
There is one webservice i need to co-operate with, but it has it's WSDL file in rpc/encoded style, so what shall I do ?

Would it be much work for those guys to generate rpc/literal WSDL or do they need to change something more than just that file ?

If they refuse to do anything, then what shall I do, use JAX-RPC instead JAX-WS ?
843833
Just changing the WSDL from rpc/encoded to rpc/literal would not be sufficient. The actual endpoint would have to be modified to support the change as well. This may or may not be a lot of work.

If an endpoint must use rpc/encoded, then you pretty much have to use JAX-RPC.
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Locked on Oct 9 2007
Added on Feb 28 2007
#java-technologies-for-web-services
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