擅长:python、mysql、java
<p>我可能已经太晚了,无法为op提供一个有用的答案,但是<strong>对于将来遇到这个问题的任何人(就像我一样)</strong>,您应该检查类方法<code>from_crawler</code>和/或{<cd2>}。在</p>
<p>这样你就可以按照你想要的方式传递你的论点。在</p>
<p>检查:
<a href="https://doc.scrapy.org/en/latest/topics/item-pipeline.html#from_crawler" rel="nofollow noreferrer">https://doc.scrapy.org/en/latest/topics/item-pipeline.html#from_crawler</a></p>
<blockquote>
<p><code>from_crawler(cls, crawler)</code></p>
<p>If present, this classmethod is called to create a pipeline instance from a Crawler. It must return a new instance of the pipeline. Crawler object provides access to all Scrapy core components like settings and signals; it is a way for pipeline to access them and hook its functionality into Scrapy.</p>
<p>Parameters: crawler (Crawler` object) – crawler that uses this pipeline</p>
</blockquote>