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    【未解决】PySpider中尝试设置Cookie避免大众点评的反扒

    pyspider crifan 522浏览 0评论
    折腾：
    【未解决】如何破解大众点评网页爬取时的反扒验证verify.meituan.com
    期间，去看看，是否可以设置对应的，合适的cookie，从而避免触发大众点评的反扒。
    如何绕过反扒 verify.meituan.com
    绕开 verify.meituan.com
    verify.meituan.com
    scrapy绕过反爬虫 – 简书
    感觉此处或许是
    “判断Header，比如如果User-agent是爬虫或者检测工具，或者非正常的浏览器，就禁止该次连接”
    再去加上之前的cookie等参数
    不过加之前，还是找个干净的浏览器环境，看看首次访问的request相关header等内容是啥
    结果用Chrome调试期间，clear清除了：
    • 所有的cookie和storage
    • network
    等内容，再去访问页面，竟然出现另外错误：
    http://www.dianping.com/taiyuan/ch70/g27762
    抱歉！页面无法访问......
错误信息：
currentDate:2019-04-23 10:23:49
userIp:222.92.130.218, 10.76.44.9
userAgent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36
    继续研究，发现首次访问页面，除了其他header，还会有个cookie
    Cookie:
__mta=1434xxx01173051.1555487763877.1555488438729.9
    不过再去试试其他页面，貌似没有这个Cookie
    再去看看cookie。
    对比了两次请求：
    http://www.dianping.com/baotou/ch70/g27762
    http://www.dianping.com/shop/97388294
    其中cookie部分：
    __mta=1434xxx01173051.1555487763877.1555488438729.9; 
aburl=1; cy=1; cye=shanghai; _hc.v=7f7a2906-c69c-60ba-1b77-4d80608c536b.1555988402; _lxsdk_cuid=16a4822cf0bc8-0d887e1d6c0a14-366f7e04-fa000-16a4822cf0bc8; _lxsdk=16a4822cf0bc8-0d887e1d6c0a14-366f7e04-fa000-16a4822cf0bc8; Hm_lvt_dbeeb675516927da776beeb1d9802bd4=1555988407; Hm_lpvt_dbeeb675516927da776beeb1d9802bd4=1555997885; _lxsdk_s=16a48b34b96-771-c57-e15%7Cuser-id%7C4


aburl=1; cy=1; cye=shanghai; _hc.v=7f7a2906-c69c-60ba-1b77-4d80608c536b.1555988402; _lxsdk_cuid=16a4822cf0bc8-0d887e1d6c0a14-366f7e04-fa000-16a4822cf0bc8; _lxsdk=16a4822cf0bc8-0d887e1d6c0a14-366f7e04-fa000-16a4822cf0bc8; Hm_lvt_dbeeb675516927da776beeb1d9802bd4=1555988407; Hm_lpvt_dbeeb675516927da776beeb1d9802bd4=1555988407; _lxsdk_s=16a48b34b96-771-c57-e15%7Cuser-id%7C1
    去用上其中的共同的部分：
    aburl=1; cy=1; cye=shanghai; _hc.v=7f7a2906-c69c-60ba-1b77-4d80608c536b.1555988402; _lxsdk_cuid=16a4822cf0bc8-0d887e1d6c0a14-366f7e04-fa000-16a4822cf0bc8;_lxsdk=16a4822cf0bc8-0d887e1d6c0a14-366f7e04-fa000-16a4822cf0bc8;Hm_lvt_dbeeb675516927da776beeb1d9802bd4=1555988407;
    去试试效果。
    问题依旧：稍微调试了几个url，就verify了。
    http://www.dianping.com/suzhou/ch70/g27762
    突然想到，难道PySpider中默认开启了cookie？
    如果是，那么去禁止cookie试试？
    【已解决】PySpider中如何禁止cookie
    不过从
    pyspider cookies问题，用requests设置cookies成功登录微博但在pyspider中失败 – 足兆叉虫的回答 – SegmentFault 思否
    -》
    self.crawl – pyspider
    看到了cookies是可以直接设置的。
    所以自己此处把：
    constHeaders = {
    ...
    "Cookie": "aburl=1; cy=1; cye=shanghai; _hc.v=7f7a2906-c69c-60ba-1b77-4d80608c536b.1555988402; _lxsdk_cuid=16a4822cf0bc8-0d887e1d6c0a14-366f7e04-fa000-16a4822cf0bc8;_lxsdk=16a4822cf0bc8-0d887e1d6c0a14-366f7e04-fa000-16a4822cf0bc8;Hm_lvt_dbeeb675516927da776beeb1d9802bd4=1555988407;"
...
}
    去改为：
    class Handler(BaseHandler):
    crawl_config = {
        "proxy": ProxyUri,
        ...


        "cookies": {
            "aburl": "1",
            "cy": "1",
            "cye": "shanghai",
            "_hc.v": "7f7a2906-c69c-60ba-1b77-4d80608c536b.1555988402",
            "_lxsdk_cuid": "16a4822cf0bc8-0d887e1d6c0a14-366f7e04-fa000-16a4822cf0bc8",
            "_lxsdk": "16a4822cf0bc8-0d887e1d6c0a14-366f7e04-fa000-16a4822cf0bc8",
            "Hm_lvt_dbeeb675516927da776beeb1d9802bd4": "1555988407",
        }
    }
    试试效果。问题依旧。
    此处，调试发现，在确定换了IP
    （先后调用get api确定IP已经换了）
    结果还会出现：
    respUrl=
https://verify.meituan.com/v2/web/general_page?action=spiderindefence&requestCode=0bff7476ccef4fffa67b5476ddc900cc&platform=1000&adaptor=auto&succCallbackUrl=https%3A%2F%2Foptimus-mtsi.meituan.com%2Foptimus%2FverifyResult%3ForiginUrl%3Dhttp%253A%252F%252Fwww.dianping.com%252Fbaoding%252Fch70%252Fg27762&theme=dianping
    ->貌似其反扒可以识别IP代理背后的，我此处的地址？
    现在感觉是：
    http://www.dianping.com/shop/97388294
    Chrome调试发现：这种shop的detail页面，貌似需要一点其他参数才能进来
    -》否则很容易就出错了：
    所有cookie都清除后
    容易出现报错页面
    继续调试，发现清除cookie后：
    有时候返回出错
    有时候还是可以访问shop页的，且有个cookie：
    Cookie:_lxsdk_s=16a4946bb7c-9d8-b5c-c47%7C%7C1
    偶尔又是：
    Cookie:_lxsdk_s=16a4949e875-db8-d33-123%7C%7C2
    Safari中是：
    _lxsdk_s=16a494c1a16-58a-a82-c0e%7C%7C1
    再多次请求是：
    _lxsdk_s=16a494c1a16-58a-a82-c0e%7C%7C4
_lxsdk_s=16a494c1a16-58a-a82-c0e%7C%7C7
_lxsdk_s=16a494c1a16-58a-a82-c0e%7C%7C10
    好像每次加3
    那此处只用1即可
                self.crawl(
                shopUrl,
                callback=self.shopDetailCallback,
                headers=self.genCurHeaders(),
                cookies={
                    "_lxsdk_s": "16a4946bb7c-9d8-b5c-c47%7C%7C1", # chrome
                    # "_lxsdk_s": "16a494c1a16-58a-a82-c0e%7C%7C1", # safari
                },
                save=curInfo,
            )
    问题依旧：
    还是会出现verify，还是刷新一下又好了。
    先不管，先去PySpider运行试试效果
    爬了几十秒后，还是各种问题了：
    结果中要爬的字段都是空
    ->说明页面没有获取到内容
    log出错：
    [W 190423 16:32:24 tornado_fetcher:423] [403] DianpingChilrenEnglish:f1b738806cd6cc81baf7a5433c18290e 
http://www.dianping.com/shop/93357247
 0.14s
[E 190423 16:32:24 processor:202] process DianpingChilrenEnglish:f1b738806cd6cc81baf7a5433c18290e 
http://www.dianping.com/shop/93357247
 -> [403] len:7801 -> result:None fol:0 msg:0 err:HTTPError('HTTP 403: Forbidden',)
    再去加回来：
    “Connection”: “keep-alive”,
    结果：
    好像效果还行。
    不过突然：
    [E 190423 16:46:05 base_handler:203] HTTP 599: LibreSSL SSL_connect: SSL_ERROR_SYSCALL in connection to 
verify.meituan.com:443
    Traceback (most recent call last):
      File "/Users/crifan/.local/share/virtualenvs/crawler_dianping_com-sGcMRJTS/lib/python3.6/site-packages/pyspider/libs/base_handler.py", line 196, in run_task
        result = self._run_task(task, response)
      File "/Users/crifan/.local/share/virtualenvs/crawler_dianping_com-sGcMRJTS/lib/python3.6/site-packages/pyspider/libs/base_handler.py", line 175, in _run_task
        response.raise_for_status()
      File "/Users/crifan/.local/share/virtualenvs/crawler_dianping_com-sGcMRJTS/lib/python3.6/site-packages/pyspider/libs/response.py", line 172, in raise_for_status
        six.reraise(Exception, Exception(self.error), Traceback.from_string(self.traceback).as_traceback())
      File "/Users/crifan/.local/share/virtualenvs/crawler_dianping_com-sGcMRJTS/lib/python3.6/site-packages/six.py", line 692, in reraise
        raise value.with_traceback(tb)
      File "/Users/crifan/.local/share/virtualenvs/crawler_dianping_com-sGcMRJTS/lib/python3.6/site-packages/pyspider/fetcher/tornado_fetcher.py", line 378, in http_fetch
        response = yield gen.maybe_future(self.http_client.fetch(request))
      File "/Users/crifan/.local/share/virtualenvs/crawler_dianping_com-sGcMRJTS/lib/python3.6/site-packages/tornado/httpclient.py", line 102, in fetch
        self._async_client.fetch, request, **kwargs))
      File "/Users/crifan/.local/share/virtualenvs/crawler_dianping_com-sGcMRJTS/lib/python3.6/site-packages/tornado/ioloop.py", line 458, in run_sync
        return future_cell[0].result()
      File "/Users/crifan/.local/share/virtualenvs/crawler_dianping_com-sGcMRJTS/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 4, in raise_exc_info
    Exception: HTTP 599: LibreSSL SSL_connect: SSL_ERROR_SYSCALL in connection to 
verify.meituan.com:443
    刷新后，还是之前verify错误：
    respUrl=
https://verify.meituan.com/v2/web/general_page?action=spiderindefence&requestCode=933f1b20a82a487480f4c7cbdce391cc&platform=1000&adaptor=auto&succCallbackUrl=https%3A%2F%2Foptimus-mtsi.meituan.com%2Foptimus%2FverifyResult%3ForiginUrl%3Dhttp%253A%252F%252Fwww.dianping.com%252Fshop%252F67535963&theme=dianping
    Safari调试
    http://www.dianping.com/shop/70003777
    看到cookie有：
    Cookie: _lxsdk_s=16a494c1a16-58a-a82-c0e%7C%7C18; aburl=1; cy=38; cye=changzhi; wed_user_path=27762|0; _hc.v="\"1396e0a9-49ff-43e7-9869-4e8b4fddf846.1556007886\""; _lxsdk=16a494c1d87c8-0b48673994cbc1-481c3400-fa000-16a494c1d87c8; _lxsdk_cuid=16a494c1d87c8-0b48673994cbc1-481c3400-fa000-16a494c1d87c8
    想办法加进来一些。
    • cye=changzhi;
    • wed_user_path=27762|0;
      • 27762是
      • CategoryLevel2ChildEnglish = “g27762” # 幼儿教育 -> 幼儿外语
      • 中的27762
    问题依旧。

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