[request_ebook] Webbots, Spiders, and Screen Scrapers

图书介绍

• Author: M. Schrenk
• Publisher: No Starch Press,US
• Publish Date: 30 Sep 2006
• ISBN: 1593271204
• Pages: 328

Book Description
The Internet is bigger and better than what a mere browser allows. Webbots,
Spiders, and Screen Scrapers is for developers and business managers
looking to unlock the competitive advantages of nontraditional online
approaches. The book first outlines the deficiencies of browsers, and then
explains how these deficiencies can be exploited in the design and
deployment of task-specific webbots. Readers will learn how to write
stealthy webbots that read email, emulate online forms, auto-authenticate,
manage cookies, and handle encryption. Sample projects reinforce these new
skills so that readers can create more sophisticated webbots and spiders to
track online prices, create anonymous browsing environments, bid on
auctions in their closing moments, and more.

Synopsis
The Internet is bigger and better than what a mere browser allows. Webbots, Spiders, and Screen Scrapers is for programmers and businesspeople who want to take full advantage of the vast resources available on the Web. There's no reason to let browsers limit your online experience-especially when you can easily automate online tasks to suit your individual needs. Learn how to write webbots and spiders that do all this and more: Programmatically download entire websites Effectively parse data from web pages Manage cookies Decode encrypted files Automate form submissions Send and receive email Send SMS alerts to your cell phone Unlock password-protected websites Automatically bid in online auctions Exchange data with FTP and NNTP servers Sample projects using standard code libraries reinforce these new skills. You'll learn how to create your own webbots and spiders that track online prices, aggregate different data sources into a single web page, and archive the online data you just can't live without.You'll learn inside information from an experienced webbot developer on how and when to write stealthy webbots that mimic human behavior, tips for developing fault-tolerant designs, and various methods for launching and scheduling webbots.You'll also get advice on how to write webbots and spiders that respect website owner property rights, plus techniques for shielding websites from unwanted robots. As a bonus, visit the author's website to test your webbots on sample target pages, and to download the scripts and code libraries used in the book. Some tasks are just too tedious-or too important!- to leave to humans. Once you've automated your online life, you'll never let a browser limit the way you use the Internet again.