middewares里：

class ProxyMiddleWare(object):
def process_request(self, request, spider):
proxy = random.choice(PROXIES)

    if proxy['user_passwd'] is None:
    # if 'user_passwd' not in proxy:
        # 没有代理账户验证的代理使用方式
        print('---------------------->>> ', proxy['ip_port'])
        request.meta['proxy'] = "http://" + proxy['ip_port']
        # request.meta['proxy'] =  'http://122.235.168.162:8118'
    else:
        # 对账户密码进行base64编码转换
        base64_userpasswd = base64.b64encode(proxy['user_passwd'].encode())
        # 对应到代理服务器的信令格式里
        request.headers['Proxy-Authorization'] = 'Basic ' + base64_userpasswd.decode()
        request.meta['proxy'] = "http://" + proxy['ip_port']

setting里：

PROXIES = [
# {'ip_port': '61.175.192.2:35420'},
# {'ip_port': '221.234.192.10:8010'},
{'ip_port': '221.224.49.194:51127', 'user_passwd': ''},
# {"ip_port": "121.41.8.23:16816", "user_passwd": "morganna_mode_g:ggc22qxp"},

# {'ip_port': '122.224.249.122:8088', 'user_passwd': 'user4:pass4'},

]

DOWNLOADER_MIDDLEWARES = {

'taobao.middlewares.TaobaoDownloaderMiddleware': 543,

'taobao.middlewares.SeleniumMiddleware': 543,

'scrapy.contrib.downloadermiddleware.httpproxy.HttpProxyMiddleware': 751,

'taobao.middlewares.ProxyMiddleWare': 750,
'taobao.middlewares.RandomUserAgent': 400,

}

我是这么设置的，而且这个IP用request测试过，返回状态码也是200，但在scrapy里不能正常抓取数据，请教各位大神指点下