February 2009
Intermediate to advanced
316 pages
9h 28m
English
Content preview from Java Web Services: Up and RunningBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 6. JAX-WS in Java Application Servers
Overview of a Java Application Server
In previous chapters, SOAP-based and REST-style web services have
been deployed using mostly the Endpoint publisher or the Tomcat web
container. This chapter illustrates how web services can be deployed
using a Java Application Server (JAS), the software centerpiece of enterprise Java. The current
version of enterprise Java is Java EE 5, which includes EJB 3.0. To
begin, here is a sketch of the software bundled into a JAS:
- Web container
A web container deploys servlets and web services. A traditional web application in Java is a mix of static HTML pages, servlets, higher-level servlet generators such as JSP (Java Server Pages) and JSF (Java Server Faces) scripts, backend JavaBeans for JSP and JSF scripts, and utility classes. Tomcat is the reference implementation (RI) for a web container. Tomcat, like other web containers, can be embedded in an application server. Web components are deployed in the web container as WAR files, which typically contain the standard configuration document web.xml and may contain vendor-specific configuration documents as well (e.g., sun-jaxws.xml). To host web services, a web container relies on a servlet interceptor (in the case of Tomcat, a
WSServletinstance) that mediates between the client and the web service SIB.- Message-oriented middleware
The message-oriented middleware supports JMS (Java Message Service), which provides the store-and-forward technologies lumped ...
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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.