Scrapy 運行多個爬蟲spider文件

https://www.cnblogs.com/yunlongaimeng/p/11526466.html

1. 在項目文件夾中新建一個commands文件夾

2. 在command的文件夾中新建一個文件 crawlall.py

3.在crawlall.py 中寫一個command類，該類繼承 scrapy.commands

from scrapy.commands import ScrapyCommand


class Command(ScrapyCommand):
    requires_project = True

    def syntax(self):
        return '[options]'

    def short_desc(self):
        return 'Runs all of the spiders 運行多個爬蟲文件'

    def run(self, args, opts):
        spider_list = self.crawler_process.spiders.list()
        print('*'*100)
        print(spider_list)
        print('*'*100)
        for name in spider_list:
            self.crawler_process.crawl(name, **opts.__dict__)
        self.crawler_process.start()

到這裏還沒完，settings.py配置文件還需要加一條。

COMMANDS_MODULE = ‘項目名稱.目錄名稱’

COMMANDS_MODULE = 'news_spider.commands'

命令行執行:啓動所有爬蟲         scrapy crawlall