中间件:

import base64

class ProxyMiddleware(object):
    def process_request(self, request, spider):
        request.meta['proxy'] = "http://xxx.xxx.xxx.xxx:xxxx"
        
        proxy_user_pass = "USER:PWD"
        encoded_user_pass = base64.encodestring(proxy_user_pass)
        request.headers['Proxy-Authorization'] = 'Basic ' + encoded_user_pass

settings设置:

DOWNLOADER_MIDDLEWARES = {
    'scrapy.contrib.downloadermiddleware.httpproxy.HttpProxyMiddleware': 110,
    'tutorial.middlewares.ProxyMiddleware': 100,
}

运行后报错

(failed 1 times): [<twisted.python.failure.Failure twisted.internet.error.ConnectionDone: Connection was closed cleanly.>, <twisted.python.failure.Failure twisted.web.http._DataLoss: Chunked decoder in 'BODY' state, still expecting more data to get to 'FINISHED' state.>]