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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

Google网站地图Sitemap与搜索引擎优化

Sitemap是指网站地图，是一个网站的结构图，包含了所有页面的链接和关系。它可以帮助搜索引擎更好地了解网站的结构和内容，以便更好地抓取和索引网站。对于SEO来说，网站地图是非常重要的一部分，因为它可以提高搜索引擎对网站内容的理解和评估，从而提高网站的排名。以下是一些使用网站地图提高SEO效果的方法： 1. 提交地图到Google搜索控制台：将网站地图提交到Google搜索控制台可以告诉Go

Public @ 2023-04-04 05:00:19

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

robots.txt概念和10条注意事项

robots.txt概念如果我们网站内有某些特殊的文件不让搜索引擎收录，那怎么办？答案是：使用一个叫做robots.txt的文件。robots.txt文件告诉搜索引擎本网站哪些文件是允许搜索引擎蜘蛛抓取，哪些不允许抓取。搜索引擎蜘蛛访问网站任何文件之前，需先访问robots.txt文件，然后抓取robots.txt文件允许的路径，跳过其禁止的路径。总结：robots.txt是一个简单的.txt文件

Public @ 2019-12-20 16:09:22

robots文件中屏蔽的为什么还可以收录？

robots.txt 是一个标准，它通过提供一些规则，告诉搜索引擎爬虫哪些网页可以被爬取，哪些网页不应该被爬取。但是，一些搜索引擎爬虫可能会忽略这些规则，直接抓取它们想要的网页。此外， robots.txt 文件的存在只是一个建议而不是命令。在一些情况下，搜索引擎爬虫可能会收录被 robots.txt 文件所屏蔽的网页，这有可能是因为发布这个网页的人想要让它被收录，也有可能是因为机器人误解了

Public @ 2023-04-24 07:50:07

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[ DB ] CONNECT:[ UseTime:0.022500s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.016035s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.015062s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_config', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 25, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_hook` [ RunTime:0.016152s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.015028s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_hook', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 3, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.017076s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4448 LIMIT 1 [ RunTime:0.015790s ]
[ 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:0.015425s ]
[ 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:0.015716s ]
[ 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:0.015685s ]
[ 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:0.015034s ]
[ 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+2 where id=4448 [ RunTime:0.017606s ]
[ 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:0.022285s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, '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:0.035470s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, '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:0.021887s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, '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:0.032401s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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