June 2004
Intermediate to advanced
792 pages
23h 17m
English
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Chapter 14. EJB 2.1: Web Service Standards
Web services have taken the enterprise computing industry by storm in the past couple of years, and for good reason. They present the opportunity for real interoperability across hardware, operating systems, programming languages, and applications. Based on XML, SOAP, and WSDL standards, web services have enjoyed widespread adoption by pretty much all the major enterprise players, including Microsoft, IBM, BEA, Oracle, Hewlett Packard, and others. Sun Microsystems has integrated web services into the J2EE platform; specifically, Sun and the Java Community Process have introduced several web service APIs, including JAX-RPC (Java API for XML-based RPC), SAAJ (SOAP with Attachments API for Java), and JAXR (Java API for XML Registries). These web service APIs have been integrated into J2EE 1.4 and are supported by EJB 2.1.
This chapter provides an overview of the technologies that are the foundation of web services: XML Schema and Namespaces, SOAP 1.1, and WSDL 1.1. Chapter 15 provides an overview of JAX-RPC, the most important web services API.
Web Services Overview
The term web service means different things to different people, but thankfully the definition is fairly straightforward for EJB developers because the J2EE platform has adopted a rather narrow view of web services. Specifically, a web service is a remote application described using WSDL (Web Service Description Language) and accessed using SOAP (Simple Object Access Protocol) according ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.