August 2013
Intermediate to advanced
360 pages
10h 47m
English
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Chapter 7. Web Services and Java Application Servers
This chapter examines how web services can be deployed using a JAS, the software centerpiece of enterprise Java. The current version of enterprise Java is Java EE 6, which includes EJB 3.x. Yet if web services, REST-style and SOAP-based alike, can be published straightforwardly using the production-grade web servers such as Tomcat and Jetty, why bother with a JAS at all? The chapter also delves into the reasons why a JAS might be preferred over a standalone web server such as Tomcat or Jetty. To begin, an overview of available JASes might be useful.
- Apache Geronimo
- This is an open source project.
- Apache TomEE
-
This is essentially the Tomcat7 web server with OpenEJB extensions. This chapter includes a code example of a SOAP-based service deployed as a
@StatelessSession EJB and using JPA to persist data in an HSQLDB database. The service is deployed under TomEE as a standard WAR file—indeed, as a WAR file that requires no web.xml document. - IBM WebSphere
- This is a JAS with various extensions. There is a free version for developers.
- JBoss
- This JAS has been a community-based project and a JAS innovator from the start. It is currently under Red Hat.
- GlassFish
- This JAS is part of the community-based GlassFish Metro project, which includes the Metro implementation of JAX-WS. GlassFish is the reference implementation. This chapter includes a pair of examples that involve GlassFish, including a SOAP-based service deployed as a ...
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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.