This chapter begins the code-driven tour of web services with an overview of the
differences—and the similarities—between REST and SOAP. Why are web services of any use? This question
is addressed with examples: one example focuses on using web services to automate access to the data and
functionality available on the Web; the other example focuses on web services as a way to integrate
diverse software systems. The theme of interoperability is pursued throughout the book with examples.
Chapter 1 includes a short history of
web services, with emphasis on how the SOA approach to distributed
systems differs significantly from the DOA approach that predates
yet continues to compete with web services. The chapter then focuses on how HTTP itself is at the
center of the RESTful way to web-based, distributed software systems. XML and JSON are
introduced as document-exchange formats of special interest in RESTful services. The chapter includes
code examples: a pair of Java HTTP clients used to illustrate key features of HTTP; and a first
RESTful service, which consists of a JSP script and two backend POJO classes. The curl utility is used to make sample client calls, including failed ones, against the first service. The chapter covers practical matters such as installing the Tomcat web server and using the provided Ant script to compile, ...
Become 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, and much more.
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.
Head of Cybersecurity
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.
Field Engineer
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.
Data Platform Tech Lead
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.