《Learning Scrapy》中文版.pdf

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第4章从Scrapy到移动应用

第8章 Scrapy编程

Scrapy架构概要

信号signals

第9章使用Pipelines

1 Scrapy HelloScrapy Scrapy —— Google Scrapy 2 HTMLXPath HTMLDOMXPath HTML ChromeXPath 3 Scrapy UR2IM—— 4 Scrapy Scrapy app 5

JSON APIsAJAX 30 Excel 6 Scrapinghub 7 Scrapy 1—— HTTP 2—— 3—— 4——Crawlera Scrapy 8 Scrapy ScrapyTwisted TwistedI/O——Python Scrapy 1——pipeline

2—— 9 Pipelines REST APIs treq Elasticsearchpipeline pipelineGoogle Geocoding API Elasticsearch Python pipelineMySQL Twisted pipelineRedis CPU pipelineCPU pipeline 10 Scrapy Scrapy—— Scrapy 1——CPU 2- 3-“” 4- 5-item/ 6- 11 Scrapyd Scrapyd

URL settingsURL scrapyd Apache Spark streaming 1 Scrapy Scrapy Scrapy Scrapy HelloScrapy Scrapy Excel3 Scrapy ScrapyScrapy 7 Scrapy89 Scrapy 100Scrapy16 16 16003 1648009 4800Scrapy4800 Scrapy

APIScrapy Scrapy ScrapyScrapy ScrapyHTML ScrapyBeautifulSouplxmlScrapySelectorlxml XPathHTML ScrapyScrapyhttps://groups.google.com/forum/#!foru m/scrapy-usersStack Overﬂowhttp://stackoverﬂow.com/questions/tagged/s crapyhttp://scrapy.org/community/ ScrapyPythonpipelines Scrapy http://doc.scrapy.org/en/latest/news.html / Scrapy Scrapy 50000Scrapy MySQLRedisElasticsearchGoogle geocoding API Apach Spark

HTMLXPath 28 89 PythonPythonPython PythonScrapy “Scrapy”Python PythonCoursera PythonScrapy Scrapy bug “” “”Eric Ries

MVP Scrapy App App“1”“2”“ 433”“Samsung UN55J6200 55-Inch TV”“Richard S.” MVP Scrapy4 App —— Google Stack OverﬂowGitHub

T DoS Scrapy 7 User-Agent ScrapyBOT_NAME User-AgentURL ScrapyRobotsTxtMiddlewarerobots.txt http://www.google.com/robots.txt Scrapy Scrapy ScrapyApache NutchScrapy ScrapyXPath CSSApache Nutch ScrapyApache SolrElasticsearchLuceneScrapy

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