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Oct 29, 2009

Intro to Web Services and REST in JAVA

Dustin Talk

Dustin Talk

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Presentation given to Texas A&M CPSC 438 (Distributed Objects Programming) Students on 10/28/2009

Introduction:

From a technical standpoint, building a Web Service is not entirely difficult, but it’s not a task that should be taken lightly either. Given the vast use of Web Services in the Enterprise environment, on a recent trip to Texas A&M University, I was able to speak to students (courtesy of Dr. Salih Yurttas) about Web Services and REST in JAVA.

Demo Applications:

As part of the presentation linked above, several demonstrations were given including overviews of the following projects and technologies.

  • metroSOAP

    We create a simple java object (POJO) representing a saying about Texas and it’s author. Using the Hibernate framework, we create a mapping to a mysql table for this object as well as a data access object for accessing the objects. Creating a service class, and it’s implementation, we annotate the service as necessary to produce a RPC based SOAP Web Service Web Application that is factored into a war file for deployment on a Java Web App server such as Apache Tomcat.

  • jerseyRest

    Using the same POJO, Hibernate mapping, and DAO as the previous project, we expose a resource and annotate it as necessary to produce a RESTful Web Service.

Optional Resources:

These resources are indirectly used in the demonstration of the above projects and may be necessary to recreate the given scenarios.

  • soapUI project

    Project files for SOAP UI. Import as necessary.

  • database table

    A collection of famous texas quotes returned by our service calls. May be imported into a mysql table.

Required Software:

A collection of software to build and deploy our example applications.

Optional Software:

Additional resources to test and access the Web Services in a meaningful way. I am also including references to tools that once added to SOAP UI will allow for JAVA client code generation.

License:

This article, along with any associated source code and files, is licensed under Apache License, Version 2.0

About the Author:

Dustin Talk is a consultant at Credera. He graduated from Texas A&M University with his Masters of Computer Science, B.S. in Computer Science, and a minor in Business. Throughout his academic career he developed applications using Java and .Net technologies. While in school, he worked for The Department of Statistics as a Network Administrator. He has interned for Anheuser-Busch Inc. as a Systems Engineer developing in .Net and working with industrial software.

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