Web Services provide a convenient mechanism for applications and components to interact using standard protocols. The emerging standards of SOAP, UDDI, and WSDL create an architecture that allows services to be registered, queried, and used in a dynamic fashion. Currently it is primarily the SOAP standard that is used, providing XML document interchange using HTTP but over time other services may become more widely used.
The JAXM package allows Java applications to create specialized servlets to perform point-to-point synchronous SOAP transactions. This chapter demonstrated one such application. In the next chapter, we examine the use of JAXM to create remote providers to allow asynchronous SOAP transactions.