JAX-WS is built into Java 6. This makes it a low-dependency choice for writing SOAP-based web service code. This post covers the basics of JAX-WS development with a sample web service.
An understanding of the following is beneficial: Servlets; XML Schema Definition (XSD); Web Services Description Langauge (WSDL); XPath; JAXB.
Server code was tested on Glassfish 3; client code was tested on Java 6.
The code here describes a contract-first web service; it is possible to do this the other way round, starting with Java code and generating descriptors from it.
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