Book Image

Java EE 8 Development with Eclipse - Third Edition

By : Ram Kulkarni
Book Image

Java EE 8 Development with Eclipse - Third Edition

By: Ram Kulkarni

Overview of this book

Java EE is one of the most popular tools for enterprise application design and development. With recent changes to Java EE 8 specifications, Java EE application development has become a lot simpler with the new specifications, some of which compete with the existing specifications. This guide provides a complete overview of developing highly performant, robust and secure enterprise applications with Java EE with Eclipse. The book begins by exploring different Java EE technologies and how to use them (JSP, JSF, JPA, JDBC, EJB, and more), along with suitable technologies for different scenarios. You will learn how to set up the development environment for Java EE applications and understand Java EE specifications in detail, with an emphasis on examples. The book takes you through deployment of an application in Tomcat, GlassFish Servers, and also in the cloud. It goes beyond the basics and covers topics like debugging, testing, deployment, and securing your Java EE applications. You'll also get to know techniques to develop cloud-ready microservices in Java EE.
Table of Contents (20 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Free Chapter
1
Introducing JEE and Eclipse
Index

RESTful web services


We will start learning web services with RESTful services because they are widely used and are easy to implement. REST is not necessarily a protocol but an architectural style, and is typically based on HTTP. RESTful web services act on resources on the server, and actions are based on HTTP methods (Get, Post, Put, and Delete). The state of resources is transferred over HTTP in either XML or JSON format, although JSON is more popular. Resources on the server are identified by URLs. For example, to get details of a course with ID 10, you can use the HTTP GET method with the following URL: http://<server_address>:<port>/course/10. Notice that the parameter is part of the base URL. To add a new Course or modify a Course, you can use either POST or PUT methods. Furthermore, the DELETE method can be used to delete a Course by using the same URL as that used for getting the course, that is, http://<server_address>:<port>/course/10.

Resource URLs in RESTful...