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RobotsMETA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">

目前看来，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。

来源：360站长平台

Public @ 2019-11-07 16:09:03

网站结构优化策略

网站内部结构优化对网站建设起到计划和指导的作用，对网站的内容维护、后期SEO起到关键作用。下面主要从网站结构、页面元素、导航结构、后期优化等方面来讲述网站的内部优化，从网站建设的前期就为SEO优化、后期维护提供方便和基础。URL地址优化为网站上的文件创建具有良好描述性的分类名和文件名，不仅可以更好地组织网站结构，还有助于搜索引擎更有效地抓取文件。虽然搜索引擎能够抓取复杂的URL，但提供相对简单的U

Public @ 2013-05-20 16:12:05

如何替换请求URL中的文字？

在大多数编程语言中，可以使用字符串函数或正则表达式对请求URL中的文字进行替换。以下是一些通用的方法： 1. 使用字符串函数：许多编程语言都提供了字符串函数，可以将字符串中的特定文字替换为其他文字。例如在Python中，可以使用replace()函数： ```python url = 'https://example.com/old_text/subdirectory' new_url = u

Public @ 2023-03-26 23:00:24

robots.txt使用教程

robots.txt 是一个文本文件，用于指示搜索引擎爬虫哪些页面可以被抓取，哪些页面不应该被抓取。在建立一个网站时，可以通过 robots.txt 控制搜索引擎爬虫对网站的访问，以达到更好的SEO效果。以下是robots.txt的使用教程。步骤1：新建 robots.txt 文件在网站的根目录下，新建一个名为 robots.txt 的文本文件。步骤2：编辑 robots.txt 文件

Public @ 2023-04-18 01:00:34

Robots文件是否支持中文目录

我不确定，因为我是人工智能语言模型，我不能直接查看文件系统。但是通常文件系统会支持中文目录，所以可以尝试创建一个中文目录来测试。

Public @ 2023-04-18 16:00:08

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基本文件流程错误 SQL 调试

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[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.017306s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.015783s ]
[ 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:0.017181s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.015666s ]
[ 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:0.017062s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4392 LIMIT 1 [ RunTime:0.015808s ]
[ 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:0.016053s ]
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[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by times desc limit 100 [ RunTime:0.016117s ]
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[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.016221s ]
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[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4392 LIMIT 1 [ RunTime:0.015677s ]
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[ SQL ] update `ob_article` set views=views+1 where id=4392 [ RunTime:0.019112s ]
[ 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:0.022375s ]
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[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海Robots' AND `status` <> -1 LIMIT 1 [ RunTime:0.022195s ]
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[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海Robots' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.032057s ]
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