开干
1、在spiders同级创建任意目录,如:commands
2、在其中创建 crawlall.py 文件 (此处文件名就是自定义的命令)
image.png
3.crawlall.py
from scrapy.commands import ScrapyCommand
from scrapy.utils.project import get_project_settings
class Command(ScrapyCommand):
requires_project = True
def syntax(self):
return '[options]'
def short_desc(self):
return 'Runs all of the spiders'
def run(self, args, opts):
spider_list = self.crawler_process.spiders.list()
for name in spider_list:
self.crawler_process.crawl(name, **opts.__dict__)
self.crawler_process.start()
4.settings.py文件中添加👇👇👇
# COMMANDS_MODULE = ‘项目名称.目录名称’
COMMANDS_MODULE = 'article.commands'
5.terminal中执行
scrapy crawlall
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