App Engine几乎是近年来最引人注目的web技术，它提供了一个简单易用的应用程序框架，以及基本的web工具。尽管 Google自带的教程已经展示了主要的步骤，本书将会帮助任何人开始上手使用这个平台。读完本书你将学会如何构建完整的交互应用，并且将它们部署到和]Google搜索引擎使用同样服务器的云中。

即便你在编程或者Web开发方面只有很少或者没有任何经验，使用Google APP Engine和这本书就能快速并且充满自信地构建那些激动人心的可扩展Web应用。

App Engine几乎是近年来最引人注目的Web技术，它提供了一个简单易用的应用程序框架以及基本的Web工具。尽管Google自带的教程已经展示了主要的步骤，但是《Google App Engine开发》将会帮助任何人开始上手使用这个平台。读完本书你将学会如何构建完整的交互应用，并且将它们部署到和]Google搜索引擎使用同样服务器的云中。

拥有这本书，你将会：纵览Google App Engine相关必备技术；学习如何使用Python、HTML、层叠样式表（CSS）、HTTP和IDataStore（App Engine的数据库）；领会创建高级动态web应用的必备技术要点；掌握部署应用的前提要件。

《Google App Engine开发》同样也是那些想要获得Web开发技能的资深程序员的极佳参考资源。构建Web应用曾是专家们独占的领地，但自从有了Google App Engine和这本书，任何人都能创建一个动态Web网站。

Preface

1. Programming on the Web

The Request/Response Cycle

What Is Google App Engine？

What Is a "Cloud"？

Why Did Google Build App Engine and Give It Away for Free？

What Is the Google Infrastructure Cloud？

Enter the Application Engine

Your Application Must Be a Good Citizen in the Google Cloud

How the Cloud Runs Your Application

Why You Really Want to Run in the Cloud

The Simplest App Engine Application

Summary

Exercises

2. HTMLandCSS

A Brief History of HTML and CSS

HyperText Markup Language （HTML）

A Well-Formed HTML Document

Validating Your HTML

HyperText Links （Anchor Tags）

Multiple Files

Lists in HTML

Specifying Styles Using CSS

Styling Tags with CSS

Exerting More Control over Markup

Validating CSS

Tools to Help You Work with css

Building the Navigation Menu

The CSS Box Model

Adding Navigation Hints for Users

Summary

Exercises

3. Python

What Is Programming？

About Pyttion

Installing Python

The Essence of Programming

Input, Processing, and Output

Conditional Steps: A Number-Guessing Web Application

Variables and Expressions

Naming Variables

Constants

Handling Text Data Using Strings

Using the String Library

Types and Conversion

Variables with Many Values at the Same Time: Lists

Repeated Code: Loops

Python's Backpack: Dictionaries

Looping Through a Dictionary

Stored and Reused Code: Python Functions

Turning Traceback to Our Advantage Using Try and Except

Object-Oriented Python

Comments in Python

The Tao of Programming

Summary

Exercises

4. Sending Data to Your Application

Making an HTTP Request

Hacking the HTTP Protocol

The HTTP Protocol Standards

Watching HTTP in Action

HTML: Building a Form

Sending Form Data to the Server Using POST

Handling Form Data in the App Engine Server

Sending Form Data to the Server Using GET

App Engine Log

Looking at All the Data Available on an HTTP Request

Advanced: Multipart POST Data with File Upload

Summary

Exercises

5. TheApp Engine webapp Framework

A Trivial App Engine Application

An Equivalent Trivial webapp Application

The Handler Callback Pattern

Looking at the Handler Code

What Is "self" and Why Is It There？

Number Guessing Using the webapp Framework

Web Server Logs

Summary

Exercises

6. Templates

Template Syntax

Using the Templates from Python

The Number-Guessing Game Using Templates

Abstraction and Separation of Concerns: "Model View Controller"

Building a Multiscreen Application

Static Files in App Engine

Referencing Static Files

Generalizing Template Lookup with Multiple Templates

Extending Base Templates

Conditional Processing Templates

Replacing More Than One Block in the Base Template

Extending Our Application

Syntax Errors

More on Templates

Summary

Exercises

7. Cookies and Sessions

HTTP Cookies

Logging In and Logging Out Using Sessions

Installing the Simple Session Utility

Using the Session to Mark Login and Logout

Changing the User Interface for a Logged-In User

Summary

Exercises

8. AppEngineDatastore

The Model-View-Controller Pattern

Defining Models

Adding a New Account Form

Adding a User Account

Looking Through the Datastore

Logging In and Checking Accounts and Passwords

Retrieving and Displaying Many Objects

Terminology: Different Types of Keys

References Between Data Models

Interactions Between Models

Pt/tting the Primary Key into Session

Adding the Chat Feature

Summary

Exercises

9. lavaScript, jQuery, and AJAX

jquery

Create a View of the Chat Messages in HTML

Asynchronously Updating a <div> Using AJAX

Summary

Exercises

10. Running Your Application on the Google Infrastructure

Application Engine Accounts

Creating an Application on App Engine

Uploading Your Application

Testing Your Application

Logs, Statistics, and Other Features

Uploading New Versions

Collaboration on Applications

Summary

Exercises

11. Memory Cache

The Rules of Memory Cache

Using the Memory Cache

Using the Application Console to Examine Memory Cache

Using a Memory Cache in Your Application

Building a Session Store Using Memory Cache

Sessions and Memory Cache

Summary

Exercises

A. Installing and Running Google App Engine on Windows XP

B. Installing and Running Google App Engine on Windows Vista

C. Installing and Running Google App Engine on a Macintosh System

D. Installing and Running Google App Engine on a Linux System

Index