抓取单个蜘蛛将多个项目类传递给管道 [英] scrapy single spider to pass multiple item classes to pipeline

问题描述

我是scrapy的新手.在 items.py 中，我声明了 2 个名为 ItemClass1 和 ItemClass2 的 ItemClass.蜘蛛方法 parseUrl 获取 html 并抓取数据并放入相应项目类的列表中.

I am new to scrapy. In items.py, I declare 2 ItemClass called ItemClass1 and ItemClass2. A spider method parseUrl get the html and scrape data and put into lists for respective Item Classes.

e.g:
C1Items = []
C1Item = ItemClass1()
#scrape data
C1Items.append(C1Item)
...
C2Items = []
C2Item = ItemClass2()
#scrape data
C2Items.append(C2Item)
...

最后:C1Items 和 C2Items 包含所需的数据.

finally: C1Items and C2Items contain required data.

return C1Items #will pass ItemClass1 data to pipeline
return C2Items #will pass ItemClass2 data to pipeline

您能否告知将 C1Items、C2Items 传递给管道的最佳方法是什么.

Could you please advise what is the best way to pass both C1Items, C2Items to pipeline.

推荐答案

要么将不同类的所有项目组合成一个列表并返回该列表，要么使用 yield 语句:

Either combine all the items of different classes into one list and return that list, or use yield statement:

C1Item = ItemClass1()
#scrape data
yield C1Item
...
C2Item = ItemClass2()
#scrape data
yield C2Item

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