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RESTful Web Services
Leonard Richardson and Sam Ruby
Beijing
•
Cambridge
•
Farnham •
Köln
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Paris
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Sebastopol
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Taipei
•
Tokyo
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RESTful Web Services
by Leonard Richardson and Sam Ruby
Copyright © 2007 O’Reilly Media, Inc. All rights reserved.
Printed in the United States of America.
Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472
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Editor: Mike Loukides
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Printing History:
May 2007:
First Edition
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tained herein.
TM
This book uses RepKover™, a durable and flexible lay-flat binding.
ISBN-10: 0-596-52926-0
ISBN-13: 978-0-596-52926-0
[M]
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Table of Contents
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
1.
The Programmable Web and Its Inhabitants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Kinds of Things on the Programmable Web
4
HTTP: Documents in Envelopes
5
Method Information
8
Scoping Information
11
The Competing Architectures
13
Technologies on the Programmable Web
18
Leftover Terminology
20
2.
Writing Web Service Clients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Web Services Are Web Sites
23
del.icio.us: The Sample Application
26
Making the Request: HTTP Libraries
29
Processing the Response: XML Parsers
38
JSON Parsers: Handling Serialized Data
44
Clients Made Easy with WADL
47
3.
What Makes RESTful Services Different? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Introducing the Simple Storage Service
49
Object-Oriented Design of S3
50
Resources
52
HTTP Response Codes
54
An S3 Client
55
Request Signing and Access Control
64
Using the S3 Client Library
70
Clients Made Transparent with ActiveResource
71
Parting Words
77
vii
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