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JAX-WS relies on the annotation feature of Java 5. The JAX-WS annotations are used to specify the metadata used to map the SEI to a fully specified service definition. Among the information provided in the annotations are the following:
The target namespace for the service.
The name of the class used to hold the request message.
The name of the class used to hold the response message.
If an operation is a one way operation.
The binding style the service uses.
The name of the class used for any custom exceptions.
The namespaces under which the types used by the service are defined.
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Most of the annotations have sensible defaults and do not need to be specified. However, the more information you provide in the annotations, the better defined your service definition. A solid service definition increases the likelihood that all parts of a distributed application will work together. |
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