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No72：Scrapy多个spider时指定pipeline

Gilmty
技术笔记
2021年12月20日
1151已阅读
3

爬虫

简介Scrapy存在多个爬虫的时候如何指定对应的管道呢。

1、在pipeline里判断爬虫

settings.py

ITEM_PIPELINES = {
        "xxxx.pipelines.MyPipeline": 300,
}

OneSpider.py

class OneSpider(scrapy.spiders.Spider):
    name = "one"

TwoSpider.py

class TwoSpider(scrapy.spiders.Spider):
    name = "two"

pipelines.py

class MyPipeline(object):
    def process_item(self, item, spider):

        if spider.name == "one":
            print("one")
        elif spider.name == "two":
            print("two")

        return item

2、在爬虫里设置pipeline（scrapy版本必须是1.1以上）

settings.py

ITEM_PIPELINES = {
        "xxxx.pipelines.OneSpiderPipeline": 300,
        "xxxx.pipelines.TwoSpiderPipeline": 400,
}

OneSpider.py

class OneSpider(scrapy.Spider):
    name = "one"
    custom_settings = {
            "ITEM_PIPELINES": {"xxxx.pipelines.OneSpiderPipeline": 300},
    }

TwoSpider.py

class TwoSpider(scrapy.Spider):
    name = "two"
    custom_settings = {
            "ITEM_PIPELINES": {"xxxx.pipelines.TwoSpiderPipeline": 400},
    }

pipelines.py

class OneSpiderPipeline(object):
    def process_item(self, item, spider):
        print("one")

        return item


class TwoSpiderPipeline(object):
    def process_item(self, item, spider):
        print("two")

        return item