Scrapy - 抓取

说明

要在 first_scrapy 目录中执行蜘蛛，请运行以下命令：

scrapy crawl first

其中，first 是在创建蜘蛛时指定的蜘蛛名称。

蜘蛛爬取后，您可以看到以下输出：

2016-08-09 18:13:07-0400 [scrapy] INFO: Scrapy started (bot: tutorial)
2016-08-09 18:13:07-0400 [scrapy] INFO: Optional features available: ...
2016-08-09 18:13:07-0400 [scrapy] INFO: Overridden settings: {}
2016-08-09 18:13:07-0400 [scrapy] INFO: Enabled extensions: ...
2016-08-09 18:13:07-0400 [scrapy] INFO: Enabled downloader middlewares: ...
2016-08-09 18:13:07-0400 [scrapy] INFO: Enabled spider middlewares: ...
2016-08-09 18:13:07-0400 [scrapy] INFO: Enabled item pipelines: ...
2016-08-09 18:13:07-0400 [scrapy] INFO: Spider opened
2016-08-09 18:13:08-0400 [scrapy] DEBUG: Crawled (200) 
<GET http://www.dmoz.org/Computers/Programming/Languages/Python/Resources/> (referer: None)
2016-08-09 18:13:09-0400 [scrapy] DEBUG: Crawled (200) 
<GET http://www.dmoz.org/Computers/Programming/Languages/Python/Books/> (referer: None)
2016-08-09 18:13:09-0400 [scrapy] INFO: Closing spider (finished)

在输出中可以看到，对于每个 URL，都有一行日志，它状态 (referer: None)，表明这些 URL 是起始 URL，它们没有引荐人。接下来，您应会看到在 first_scrapy 目录中创建了两个名为 Books.html 和 Resources.html 的新文件。