玩爬虫，为什么列表网的验证码图片链接一刷新就出不来了？ - V2EX
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colincat
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玩爬虫，为什么列表网的验证码图片链接一刷新就出不来了？

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  •   colincat Feb 18, 2013 3193 views
    This topic created in 4836 days ago, the information mentioned may be changed or developed.
    例如：http://daqing.liebiao.com/shouji/21157360.html 里面的手机号链接http://www.liebiao.com/cgi-bin/phone.php?p=Lnbc8sBq8n63LndA8pUi8pCaVsV4Vp6 第一次可以显示出来，点刷新就再也刷不出来了，为什么啊怎么实现的？
    Supplement 1    Feb 19, 2013
    已经解决啦，不过图片是透明背景，在想办法合并中。。。
  • 图片链接
  • 爬虫
  • 验证码
    4 replies    1970-01-01 08:00:00 +08:00
    est
        1
    est  
       Feb 18, 2013   1
    session绑定，一次请求一个唯一hash。下载站常用的招数。
    colincat
        2
    colincat  
    OP
       Feb 18, 2013
    @est 怎么搞定啊？
    est
        3
    est  
       Feb 18, 2013
    @colincat 带session cookie去请求图片呗。。
    colincat
        4
    colincat  
    OP
       Feb 18, 2013 via Android
    @est 也这样弄啦，还不行，明天试试加一个gzip参数
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