但是从1.0.0版本开始,scrapy中有一个新功能,您可以像这样覆盖每个spider的设置:
class MySpider(scrapy.Spider):
name = "my_spider"
custom_settings = {"HTTP_PROXY":'http://127.0.0.1:8123',
"DOWNLOADER_MIDDLEWARES": {'myproject.middlewares.RandomUserAgentMiddleware': 400,
'myproject.middlewares.ProxyMiddleware': 410,
'scrapy.contrib.downloadermiddleware.useragent.UserAgentMiddleware': None}}
class MySpider2(scrapy.Spider):
name = "my_spider2"
custom_settings = {"DOWNLOADER_MIDDLEWARES": {'myproject.middlewares.RandomUserAgentMiddleware': 400,
'scrapy.contrib.downloadermiddleware.useragent.UserAgentMiddleware': None}}