机器人拦截 功能说明 配置字段 配置示例 放行原本命中爬虫规则的请求 增加爬虫判断 机器人拦截 功能说明 bot-detect 插件可以用于识别并阻止互联网爬虫对站点资源的爬取。 配置字段 名称 数据类型 填写要求 默认值 描述 allow array of string 选填 - 配置匹配 User-Agent 请求头的正则表达式，...

Requests and Responses Request objects Passing additional data to callback functions Using errbacks to catch exceptions in request processing Accessing additional data in errback...

Debugging memory leaks Common causes of memory leaks Too Many Requests? Debugging memory leaks with trackref Which objects are tracked? A real example Too many spiders? scrap...

Debugging memory leaks Common causes of memory leaks Too Many Requests? Debugging memory leaks with trackref Which objects are tracked? A real example Too many spiders? scrap...

如何实现多服务器集群爬虫？ 如何实现多服务器集群爬虫？ 很多时候，单机器爬取的效率并不高，对于京东、淘宝这种动则上千万页面的网站，真的会爬到天荒地老，如何快速爬取成了当今爬虫最难的课题，要说破解防盗页面以及内容正则匹配提取，真的是特别的小儿科。现在PHPSpider框架自带了集群功能，可以让初学者很轻易的在多台机器上运行同一分代码实现多机器爬取。 ...

Item Exporters 使用 Item Exporter 1. 在 field 类中声明一个 serializer 2. 覆盖(overriding) serialize_field() 方法 Item Exporters 参考资料 BaseItemExporter XmlItemExporter CsvItemExporter Pickl...

运行项目 过程分析 注意 运行项目 这个项目演示了在多个spiders实例之间，如何共享(share)一个爬虫spider的请求队列； 第一次运行的爬虫，然后停止 它： cd redis - youyuan scrapy crawl youyuan ... [ youyuan ] ... ^ C ...

Requests and Responses Request objects Passing additional data to callback functions Using errbacks to catch exceptions in request processing Request.meta special keys bindaddre...

Insert Basic usage Inserting links Nested inserts With block Conflicts Upserts Suppressing failures Bulk inserts Insert The insert command is used to create instances o...

Feed exports Serialization formats JSON JSON lines CSV XML Pickle Marshal Storages Storage URI parameters Storage backends Local filesystem FTP S3 Google Cloud Storage ...