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Robots META标签的写法

Robots META标签中没有大小写之分，name=”Robots”表示所有的搜索引擎，可以针对某个具体搜索引擎写为name=”BaiduSpider”。 content部分有四个指令选项：index、noindex、follow、nofollow，指令间以“,”分隔。

INDEX 指令告诉搜索机器人抓取该页面；

FOLLOW 指令表示搜索机器人可以沿着该页面上的链接继续抓取下去；

Robots Meta标签的缺省值是INDEX和FOLLOW，只有inktomi除外，对于它，缺省值是INDEX,NOFOLLOW。

这样，一共有四种组合：

<META NAME=”ROBOTS” CONTENT=”INDEX,FOLLOW”>

<META NAME=”ROBOTS” CONTENT=”NOINDEX,FOLLOW”>

<META NAME=”ROBOTS” CONTENT=”INDEX,NOFOLLOW”>

<META NAME=”ROBOTS” CONTENT=”NOINDEX,NOFOLLOW”>

其中

<META NAME=”ROBOTS” CONTENT=”INDEX,FOLLOW”>可以写成<META NAME=”ROBOTS” CONTENT=”ALL”>；

<META NAME=”ROBOTS” CONTENT=”NOINDEX,NOFOLLOW”>可以写成<META NAME=”ROBOTS” CONTENT=”NONE”>

绝大多数的搜索引擎机器人都遵守robots.txt的规则，而对于Robots META标签，目前支持的并不多，但是正在逐渐增加，如著名搜索引擎GOOGLE就完全支持，而且GOOGLE还增加了一个指令“archive”，可以限制GOOGLE是否保留网页快照。例如：

<META NAME=”googlebot” CONTENT=”index,follow,noarchive”>

表示抓取该站点中页面并沿着页面中链接抓取，但是不在GOOLGE上保留该页面的网页快照。

Public @ 2019-08-04 16:09:30

我的 Sitemap 可以有多大？

单个Sitemap 应该小于 10MB（10,485,759字节），所包含的网址数最多为 50,000 个。如果您网站包含的网址超过 50,000 个或您的 Sitemap 超过 10MB，则需要创建多个 Sitemap 文件，并且需要使用 Sitemap 索引文件。Sitemap 索引文件应该小于 10MB（10,485,759字节），且最多可以包含1000个sitemap。

Public @ 2009-06-06 16:11:56

301跳转常见问题汇总

Q1:什么是301跳转？答：301重定向是一种网页重定向技术，将请求的网页移动到另一个网址，并在浏览器中显示新的网址。原因主要是为了实现网站的结构更改，以便用户能够快速、准确和对服务器最有利的方式访问网站。 Q2:为什么需要301跳转？答：301跳转可以提高搜索引擎优化好处，确保移动到新网址的完整SEO价值，以及提高用户体验，避免出现错误。因此，301重定向被认为是必要的，特别是当你

Public @ 2023-02-25 09:48:21

头条搜索Robots匹配说明

匹配方式分两部分：1.path部分，2.参数部分匹配支持?*$?两种通配符?*? 表示任何有效字符的 0 个或多个个案。?$? 表示网址结束。path部分与google匹配方式保持一致，也就是只有/或是*开头的规则才有机会匹配上?/?匹配根目录以及任何下级网址?/fish??/fish?开头的匹配项* ?/fish?* ?/fish.html?* ?/fish/salmon.html?* ?/fi

Public @ 2011-09-27 16:09:01

什么是meta robots 标签？meta robots 标签的写法

网站上有些页面不希望被搜索引擎收录，我们可以使用robots的文件或者meta robots 标签。什么是meta robots 标签？meta robots 标签是页面head部分meta标签的一种，用于指令搜索引擎禁止索引（收录）本页内容。meta robots 标签的写法：<meta name=”robots”content=”noindex,nofollow”>标签的意义：禁止

Public @ 2012-07-08 16:09:26

更多您感兴趣的搜索

基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.026423s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.019015s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4448 LIMIT 1 [ RunTime:0.017768s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.018644s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by times desc limit 100 [ RunTime:0.018114s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.018321s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4448 LIMIT 1 [ RunTime:0.017725s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] update `ob_article` set views=views+1 where id=4448 [ RunTime:0.018389s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站结构优化' AND `status` <> -1 LIMIT 1 [ RunTime:0.023774s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站结构优化' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.049929s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海Robots' AND `status` <> -1 LIMIT 1 [ RunTime:0.030060s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海Robots' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.034643s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

0.617984s

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