如图,很疑惑的说。。。
各位可以在firefox中打开百度的页面,然后搜索关键词,右侧就会出现了。
回复讨论(解决方案)
http://blog.csdn.net/lgh1117/article/details/7740136
http://blog.csdn.net/lgh1117/article/details/7740136
图片会比纯文本更小么?
http://blog.csdn.net/lgh1117/article/details/7740136
图片会比纯文本更小么?
节省了一个HTTP 请求,服务器上可以少放一张图片
http://blog.csdn.net/lgh1117/article/details/7740136
图片会比纯文本更小么?
节省了一个HTTP 请求,服务器上可以少放一张图片
可是它本身就是文字的啊,为什么要做成图片格式呢?直接用文字内容不就好了么?
防采集用的吧
这个是百度最近才有的,就是防止被采集的。
网站把文字做成图片主要是防爬取
这个是百度最近才有的,就是防止被采集的。
原来如此……有点儿不可思议吖,为什么要防止采集呢~~~
图片数据经 base64 编码后,体积一定会增大。并不利于存储和传输
如果说是为了防采集,那是防不了的。取出内容经base64 解码后就是图片数据了
应该是为了不暴露原始图片的地址
这个是百度最近才有的,就是防止被采集的。
原来如此……有点儿不可思议吖,为什么要防止采集呢~~~ 防采集是指防止采集到字符形式。 比如现在的很多租房网站 手机号码都是以图片形式显示。 有些邮箱也是。 就是防止被软件自动采集了用来群发广告,群发邮件。
另外一点,也是为了保护自己网站的资源。 你想想,别人把你论坛内容用软件完整采集后完整克隆一个咋办? csdn现在的做法是你频繁采集几次就提示 啊,爬虫!!

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