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robots.txt文件放在哪里?

robots.txt文件放在哪里?

robots.txt文件应该放置在网站根目录下。举例来说，当spider访问一个网站（比如 http://www.abc.com）时，首先会检查该网站中是否存在http://www.abc.com/robots.txt这个文件，如果 Spider找到这个文件，它就会根据这个文件的内容，来确定它访问权限的范围。

网站 URL

相应的 robots.txt的 URL

http://www.w3.org/

http://www.w3.org/robots.txt

http://www.w3.org:80/

http://www.w3.org:80/robots.txt

http://www.w3.org:1234/

http://www.w3.org:1234/robots.txt

http://w3.org/

http://w3.org/robots.txt

来源：百度搜索资源平台百度搜索学堂

Public @ 2017-01-09 16:08:57

sitemap提交后，多久能被百度抓取？

通常情况下，sitemap提交后，百度会在1-2天内进行抓取。但具体时间也受到网站规模、更新频率、抓取限制等因素的影响。如果长期未被抓取，可以检查一下sitemap是否存在问题，并通过百度站长平台的工具进行排查。

Public @ 2023-06-16 10:50:16

锚文本链接是什么？

锚文本链接是指在网页上，使用一段文字或者词语作为超链接，并且这段文字或者词语是描述链接目标的内容，而不是直接使用URL地址。锚文本链接可以更容易地吸引到用户的点击，并且有助于提高网页的搜索引擎排名。

Public @ 2023-06-22 03:00:07

robot 禁止抓取图片

可以在Robot协议文件中添加"User-agent:*"以及"Disallow: /images/"，这样Robot就会禁止抓取图片。

Public @ 2023-02-24 10:24:06

360搜索对Robots协议的扩展

360搜索对Robots协议进行了扩展，增加了以下几个指令： 1. User-Agent：用于指定搜索引擎访问网站时使用的用户代理字符串，可以设置多个User-Agent。 2. Crawl-delay：用于指定搜索引擎访问网站时的延迟时间，单位为秒。可以设置针对不同的User-Agent的延迟时间。 3. Sitemap：用于指定网站的sitemap文件的地址，搜索引擎将通过该文件获取站点

Public @ 2023-05-29 17:00:21

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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.025582s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.018520s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4379 LIMIT 1 [ RunTime:0.017271s ]
[ 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:0.017845s ]
[ 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:0.017873s ]
[ 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:0.018288s ]
[ 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` = 4379 LIMIT 1 [ RunTime:0.017322s ]
[ 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=4379 [ RunTime:0.018332s ]
[ 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:0.024532s ]
[ 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:0.054083s ]
[ 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:0.024362s ]
[ 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:0.034414s ]
[ 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', ) ]

0.498483s

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