middlewares.py 文件源码

def process_request(self, request, spider):
    proxy = random.choice(PROXIES)
    if proxy['user_pass'] is not None:
      request.meta['proxy'] = "http://%s" % proxy['ip_port']
      encoded_user_pass = base64.encodestring(proxy['user_pass'])
      request.headers['Proxy-Authorization'] = 'Basic ' + encoded_user_pass
      print "**************ProxyMiddleware have pass************" + proxy['ip_port']
    else:
      print "**************ProxyMiddleware no pass************" + proxy['ip_port']
      request.meta['proxy'] = "http://%s" % proxy['ip_port']