知识点 Spider参数 知识点 官方架构图 Scrapy主要包括了以下组件： 五个功能模块 引擎(Scrapy): 用来处理整个系统的数据流处理, 数据流的指挥官，负责控制数据流（控制各个模块之间的通信) 调度器(Scheduler): 负责引擎发过来的请求URL,压入队列成一个URL的优先队列, 由它来决定下一个要抓取的网址是什么...

Spiders scrapy.Spider 爬取规则(Crawling rules) CrawlSpider样例 XMLFeedSpider XMLFeedSpider例子 CSVFeedSpider CSVFeedSpider例子 SitemapSpider SitemapSpider样例 讨论 Spiders Spider类定...

Spiders scrapy.Spider Spider arguments Generic Spiders CrawlSpider Crawling rules CrawlSpider example XMLFeedSpider XMLFeedSpider example CSVFeedSpider CSVFeedSpider example...

Spiders Spider class scrapy.spider.Spider Spider样例 案例 CrawlSpider scrapy.spiders.CrawlSpider 爬取规则(Crawling rules) CrawlSpider案例 process_links参数:动态网页爬取，动态url的处理 process_req...

Stats Collection Common Stats Collector uses Available Stats Collectors MemoryStatsCollector DummyStatsCollector Stats Collection Scrapy provides a convenient facility for c...

Stats Collection Common Stats Collector uses Available Stats Collectors MemoryStatsCollector DummyStatsCollector Stats Collection Scrapy provides a convenient facility for ...

Downloader Middleware Activating a downloader middleware Writing your own downloader middleware Built-in downloader middleware reference CookiesMiddleware Multiple cookie session...

Scrapy Tutorial Creating a project Our first Spider How to run our spider What just happened under the hood? A shortcut to the start_requests method Extracting data XPath: a br...

Debugging Spiders Parse Command Scrapy Shell Open in browser Logging Debugging Spiders This document explains the most common techniques for debugging spiders. Consider the...

Extensions Extension settings Loading & activating extensions Available, enabled and disabled extensions Disabling an extension Writing your own extension Sample extension Bu...