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How to Do Everything with

Web 2.0 Mashups

New York Chicago San Francisco Lisbon London Madrid Mexico City Milan New Delhi

Jesse Feiler Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com

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Copyright © 2008 by The McGraw-Hill Companies All rights reserved Manufactured in the United States of America Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher

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About the Authors

Jesse Feiler has written a number of books about FileMaker, Mac OS X, the Web, and new

technologies; his books have been translated into Japanese, Chinese, Polish, German, Spanish,

French, and other languages His most recent book is Special Edition Using FileMaker 9 As

director of North Country Consulting, he has designed and implemented a variety of solutions for small businesses and nonprofits in fields such as production, marketing, the arts, printing and publishing, food service, and construction He has taught and consulted widely on nonprofit governance, and he is the founder of ChamplainArts.com—a listing of cultural events in 2 states,

2 countries, and 2 languages

About the Technical Editor

Jim Bumgardner is a senior technical guru at Yahoo! Music, a teacher at Pasadena’s Art Center

College of Design, and the creative mind behind CoverPop.com and CrazyDad.com An expert

in graphics and music software, Jim makes mashups, software toys, and experimental user interfaces using Flash, JavaScript, PHP, and other tools

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Contents at a Glance

PART I Introducing Mashups

1 Welcome to the World of Mashups 3

2 Understanding the Mashup World 15

PART II Learn Mashup Technologies 3 Know the Web 2.0 Mashup Rules and Design Principles 25

4 Use XML to Structure Data 35

5 Use JavaScript to Script the Mashup Page 47

6 Use PHP to Perform Server-Side Scripting 61

7 Use MySQL with PHP to Retrieve Mashup Data 79

8 Use RSS and Atom to Receive Data Automatically 97

9 Use XMLHttpRequest, XML-RPC, REST, and JSON to Retrieve Data 113

10 Use XHTML to Structure the Mashup Pages 127

PART III Build Your Own Mashups 11 Implement a Basic Mashup 143

12 Use the Google Maps API 163

13 Build Mashups with the Google Maps API 179

14 Use the Amazon Web Services and Google Search APIs 205

15 Build a Mashup to Search Amazon and Google at the Same Time 225

16 Use the Flickr API 241

17 Build a Mashup to Search Flickr and Google at the Same Time 255

18 Use the eBay API 265

19 Map the Locations of eBay Items 279

Index 291

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Acknowledgments xv

Introduction xvii

PART I Introducing Mashups CHAPTER 1 Welcome to the World of Mashups 3

Sell Things with Mashups 5

Provide Information with Mashups 8

Create Art with Mashups 11

CHAPTER 2 Understanding the Mashup World 15

Describe a Mashup 16

Use Multisource Mashups 16

Use Presentation Mashups 17

Build Your Own Mashup 17

Decide on Your Mashup’s Objective 18

Identify the Data and the Keys 18

Get Access to the Data 18

Regroup 19

Design the User Interaction 19

Implement the Mashup 19

Implement the Starting Page 20

Make Money with Mashups 20

Achieve Goals with Mashups 20

Improve Productivity with Mashups 21

Know How to Use Mashup Data Legally 21

PART II Learn Mashup Technologies CHAPTER 3 Know the Web 2.0 Mashup Rules and Design Principles 25

Manage Multiple Technologies for Mashups 26

Separate Data from Presentation 27

Contents

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viii How to Do Everything with Web 2.0 Mashups

Use Scripts 29

Server-Side Scripting 30

Browser-Side Scripting 30

Access Data with APIs 30

Minimize Full-Page Loading 31

Make Your Mashup Visible to Search Engines 32

Use Object-Oriented Programming Techniques 33

Adopt Standards 33

CHAPTER 4 Use XML to Structure Data 35

Understand XML Structure and Purpose 36

Learn Basic XML Syntax 38

Create and Use XML Elements 43

Use Attributes to Identify Data Characteristics 44

Avoid Confusion by Using Namespaces 45

CHAPTER 5 Use JavaScript to Script the Mashup Page 47

Understand JavaScript Structure 49

Place JavaScript Scripts in Script Elements 49

Use Scripts from an External Source with the src Attribute 49

Scripts Are Interpreted as They Are Encountered on the HTML Page Unless They Are in the Head Element 50

You Can Use Semicolons to End Statements 50

Continue Quoted Text Strings with \ and Concatenation (+) 50

Use Spaces and Comments for Readability 51

JavaScript Is Case-Sensitive 51

Use Local and Global Variables 51

Create and Use Functions 52

Use JavaScript Objects 54

Work with Events 55

Handle Errors 55

Handle JavaScript Environmental Problems 57

CHAPTER 6 Use PHP to Perform Server-Side Scripting 61

Understand PHP Structure 62

Use PHP Delimiters 64

Use Comments 65

Terminate PHP Statements 65

Start a PHP Script by Submitting an HTML Form 65

Use PHP Variables and Arrays 69

Use PHP Strings 69

Differentiating Between Single and Double Quotes 69

Using Heredoc 70

Building Concatenated Strings 71

Control PHP Operations 72

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Contents ix

Build a Web Page with PHP 72

The HTML Source Code to Be Built 72

The PHP Code to Build the HTML Source Code 73

Structure Multiple PHP Files 76

CHAPTER 7 Use MySQL with PHP to Retrieve Mashup Data 79

Understand SQL and Databases 80

Create SQL Queries 82

Use the FEC Database 84

Use MySQL 86

Use PHP to Get to an SQL Database 87

Connect to the Database 87

Create and Process the Query 88

Fetch the Data 89

Disconnect from the Database 90

Create and Load a Test Database 90

Create a Test Database 90

Load the Test Database 91

Delete Data from the Test Database 95

CHAPTER 8 Use RSS and Atom to Receive Data Automatically 97

Understand Syndication, RSS, and Atom 99

RSS 99

Atom 101

Categorize and Label a Feed 102

Parse a Feed with PHP 103

Inside the Feed’s XML Document 104

Implement the Form to Launch the Script 110

Implement the PHP Script to Parse the Feed 111

Create a Search Feed 111

CHAPTER 9 Use XMLHttpRequest, XML-RPC, REST, and JSON to Retrieve Data 113

Understand Web Services 115

Deal with Cross-Domain Scripting Issues 115

Use XMLHttpRequest 116

Constructing and Sending an XMLHttpRequest 117

Handling an XMLHttpRequest Response 118

Putting It Together 119

Implement an XML-RPC Retrieval 123

Implement a REST Retrieval 124

Implement a JSON Retrieval 126

CHAPTER 10 Use XHTML to Structure the Mashup Pages 127

Understand the Need for XHTML 128

HTML’s Ease of Use Is a Two-Edged Sword 129

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x How to Do Everything with Web 2.0 Mashups

The XHTML Solution 129

Why This Matters for Mashups 130

What Makes XHTML Code Tricky for Mashup Results Pages? 131

The Sample XHTML Code 131

Use XHTML Structures 132

The XML Declaration 132

The Document Type Declaration (DTD) 133

The HTML Element 134

Use XHTML Syntax 134

XHTML Documents Can (and Should) Contain Comments 134

XHTML Element Syntax 134

XHTML Attribute Syntax 135

Documents Should Be Well-Formed and Valid 136

Validate XHTML 136

PART III Build Your Own Mashups CHAPTER 11 Implement a Basic Mashup 143

The Population Data 145

The Labor Force Data 148

Load Labor Force Data into MySQL 152

Load Population Data into MySQL 155

Test 157

Regroup 158

Design the User Interface 158

CHAPTER 12 Use the Google Maps API 163

Get Access to the Google Maps API 164

Create the Basic Mapping Page 167

Create a Map 169

Identify a Location with a GLatLng 170

Use a Geocoder 170

Create a Marker 172

Add Text to a Marker 173

Putting It Together in the Callback Function 173

Wrap It Up in PHP 174

CHAPTER 13 Build Mashups with the Google Maps API 179

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Contents xi

Create a Campaign Contributions Mashups 192

Regroup 199

CHAPTER 14 Use the Amazon Web Services and Google Search APIs 205

Get Access to the Amazon API 206

Setting Up an Amazon Account 207

Setting Up an Amazon Associate Account 207

Setting Up an Amazon Web Services Account 209

Search Amazon for an Item 211

Required Parameters 212

General Parameters 213

Specific Parameters for ItemSearch 214

Put It Together: An Amazon Search REST Query 214

Build an Amazon Link 214

Build an Amazon Shopping Cart 216

Use the Google Search API 218

CHAPTER 15 Build a Mashup to Search Amazon and Google at the Same Time 225

The Basic Mashup Architecture 228

Code the Mashup 230

Add Debugging and Error-Checking Code 236

Debugging Code 236

Debugging the XML from Amazon 237

Checking the Result 238

Testing Error-Checking Code 239

CHAPTER 16 Use the Flickr API 241

Get Access to the Flickr API 242

Getting a Key 243

Exploring the API 244

Search for Photos 246

Use API Explorer 246

Display a Photo 250

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xii How to Do Everything with Web 2.0 Mashups

CHAPTER 17 Build a Mashup to Search Flickr and Google at the Same Time 255

CHAPTER 18 Use the eBay API 265

Get Access to the eBay API 266

Use the API Test Tool 267

Generating the Token 268

Making the API Call 269

Use the REST Interface for GetSearchResults 271

Define Your Token and User ID 272

Set Up Variables 273

Create the Request 273

Execute the Request 273

Use the SOAP Interface for GetSearchResults 274

Define Your Token and User ID 274

Set Up Variables 274

Create the Request 274

Execute the Request 276

Parse the XML Results 277

CHAPTER 19 Map the Locations of eBay Items 279

Implement the Page Top Include 282

Implement the PHP Code 283

What’s Next? 288

Index 291

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Roger Stewart and Carly Stapleton at McGraw-Hill worked tirelessly to help move this book along Carole McClendon, at Waterside Productions as always contributed her skills and expertise

Jim Bumgardner’s technical edits were invaluable; you will notice several code snippets and

specific suggestions from Jim that I’m happy to be able to pass along

Acknowledgments

xiii

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Tiêu đề	How to Do Everything with Web 2.0 Mashups
Tác giả	Jesse Feiler
Trường học	McGraw-Hill Companies
Chuyên ngành	Web Development
Thể loại	Sách giáo trình
Năm xuất bản	2008
Thành phố	New York

Định dạng
Số trang	33
Dung lượng	1,67 MB