Justin's Words

阻止搜索引擎对页面进行爬取的方法

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使用元标记

在 <meta> 标签中插入 noindex 元标记可以完全阻止 Google 对该页面的索引，也就是该页面不会出现在 Google 的搜索结果中。

相对大部分搜索引擎的做法：

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<meta name="robots" content="noindex">

只相对 Google 的做法：

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<meta name="googlebot" content="noindex">

使用 robots.txt

robots.txt 必须放在网站的根目录下，搜索引擎爬到该站点时会首先访问 robots.txt，然后根据 robots.txt 里面指定的屏蔽网址对该网站特定网址进行屏蔽，结果将不出现在 Google 搜索结果中。

以下是百度的 robots.txt：

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User-agent: Baiduspider
Disallow: /baidu
Disallow: /s?
Disallow: /ulink?
Disallow: /link?

User-agent: Googlebot
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: MSNBot
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: Baiduspider-image
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: YoudaoBot
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: Sogou web spider
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: Sogou inst spider
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: Sogou spider2
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: Sogou blog
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: Sogou News Spider
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: Sogou Orion spider
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: ChinasoSpider
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: Sosospider
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: yisouspider
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: EasouSpider
Disallow: /baidu
Disallow: /s?
Disallow: /shifen/
Disallow: /homepage/
Disallow: /cpro
Disallow: /ulink?
Disallow: /link?

User-agent: *
Disallow: /

当然你也可以去看看 Google 的 robots.txt

另外 Google 有个自动生成 Robots.txt 的工具，也可以去了解下。

给敏感页面添加密码访问

给敏感页面添加密码访问，并在服务端进行验证。

下面是 Google 出的 SEO 文档，颇受帮助。