scrapy自定制命令

自定制命令

在spiders同级创建任意目录，如：commands
在其中创建 crawlall.py 文件（此处文件名就是自定义的命令）

 1 from scrapy.commands import ScrapyCommand
 2     from scrapy.utils.project import get_project_settings
 3 
 4 
 5     class Command(ScrapyCommand):
 6 
 7         requires_project = True
 8 
 9         def syntax(self):
10             return '[options]'
11 
12         def short_desc(self):
13             return 'Runs all of the spiders'
14 
15         def run(self, args, opts):
16             spider_list = self.crawler_process.spiders.list()
17             for name in spider_list:
18                 self.crawler_process.crawl(name, **opts.__dict__)
19             self.crawler_process.start()

crawlall.py

在settings.py 中添加配置 COMMANDS_MODULE = '项目名称.目录名称'
在项目目录执行命令：scrapy crawlall

单个爬虫：

import sys
from scrapy.cmdline import execute

if __name__ == '__main__':
    execute(["scrapy","crawl","chouti","--nolog"])