Programming Spiders, Bots, and Aggregators in Java

The content and services available on the web continue to be accessed mostly through direct human control. But this is changing. Increasingly, users rely on automated agents that save them time and effort by programmatically retrieving content, performing complex interactions, and aggregating data from diverse sources. Programming Spiders, Bots, and Aggregators in Java teaches you how to build and deploy a wide variety of these agents-from single-purpose bots to exploratory spiders to aggregators that present a unified view of information from multiple user accounts.

You will quickly build on your basic knowledge of Java to quickly master the techniques that are essential to this specialized world of programming, including parsing HTML, interpreting data, working with cookies, reading and writing XML, and managing high-volume workloads. You'll also learn about the ethical issues associated with bot use--and the limitations imposed by some websites.

This book offers two levels of instruction, both of which are focused on the library of routines provided on the companion CD. If your main concern is adding ready-made functionality to an application, you'll achieve your goals quickly thanks to step-by-step instructions and sample programs that illustrate effective implementations. If you're interested in the technologies underlying these routines, you'll find in-depth explanations of how they work and the techniques required for customization.

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Title of ebook: Programming Spiders, Bots, and Aggregators in Java
ISBN: 9780782152326
parent-ISBN: 9780782140408
Publisher: Sybex
Internet download file size: 4296 kb
Pages: 516
Published: 10-2006
Released online for download: 10-11-2006
Author of eBook: Heaton, Jeff

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Programming Spiders, Bots, and Aggregators in Java

Chapter One

Java Socket Programming

Exploring the world of sockets

Learning how to program your network

Java Stream and filter Programming

Understanding client sockets

Discovering server sockets

The Internet is built of many related protocols, and more complex protocols are layered on top of system level protocols. A protocol is an agreed-upon means of communicating used by two or more systems. Most users think of the Web when they think of the Internet, but the Web is just a protocol built on top of the Hypertext Transfer Protocol (HTTP). HTTP, in turn, is built on top of the Transmission Control Protocol/Internet Protocol (TCP/IP), also known as the sockets protocol.

Most of this book will deal with the Web and its facilitating protocol, HTTP. But before we can discuss HTTP, we must first examine TCP/IP socket programming.

Frequently, the terms socket and TCP/IP programming are used interchangeably both in the real world and in this chapter. Technically, socket-based programming allows for more protocols than just TCP/IP. With the proliferation of TCP/IP systems in recent years, however, TCP/IP is the only protocol tha ... read full excerpt from Programming Spiders, Bots, and Aggregators in Java ebook

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