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robots.txt文件放在哪里?

robots.txt文件应该放在网站根目录下。举例来说，当robots访问一个网站时，首先会检查该网站中是否存在这个文件，如果机器人找到这个文件，它就会根据这个文件的内容，来确定它访问权限的范围。

Public @ 2019-06-21 16:09:32

常见的robots.txt文件用法实例

常见的robots.txt文件用法实例：1、禁止所有搜索引擎抓取网站的任何部分User-agent: *Disallow: /这是禁止所有目录和文件被所有搜索引擎收录。网站还没上线时，有的会先屏蔽所有蜘蛛抓取。2、允许所有的spider抓取（或者也可以建一个空的robots.txt文件）User-agent: *Allow: /这是允许所有搜索引擎抓取网站的任何部分，既然是允许所有文件被抓取，可以

Public @ 2010-05-21 16:09:23

Canonical标签的作用是什么？SEO详细解读！

如果网站中有不同的url能访问到同一个页面，那么从网站seo优化的角度来看，是有问题的。不同的网址都可以访问同样内容的页面，会给有可能引起搜索引擎的误判。Canonical标签的出现，就是来解决这一问题的。什么是canonical标签canonical标签是在html网页中head头部标签中link标签的一种属性;最早由谷歌搜索引擎提出，目的是为了解决网址规范性问题。简单来说就是当网页中有多个网址

Public @ 2016-10-20 16:11:19

robot 禁止抓取图片

User-agent: *Disallow: .jpg$jpg可以代替为gif，png 等等...

Public @ 2020-04-11 16:09:30

常见的robots.txt文件用法实例

常见的robots.txt文件用法实例：1、禁止所有搜索引擎抓取网站的任何部分User-agent: *Disallow: /这是禁止所有目录和文件被所有搜索引擎收录。网站还没上线时，有的会先屏蔽所有蜘蛛抓取。2、允许所有的spider抓取（或者也可以建一个空的robots.txt文件）User-agent: *Allow: /这是允许所有搜索引擎抓取网站的任何部分，既然是允许所有文件被抓取，可以

Public @ 2010-05-21 16:09:23

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/www/wwwroot/briline.net/public/public.php ( 1.08 KB )
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/www/wwwroot/briline.net/thinkphp/convention.php ( 10.31 KB )
/www/wwwroot/briline.net/thinkphp/library/think/App.php ( 21.04 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Request.php ( 50.94 KB )
/www/wwwroot/briline.net/app/config.php ( 11.25 KB )
/www/wwwroot/briline.net/app/database.php ( 1.41 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Hook.php ( 4.76 KB )
/www/wwwroot/briline.net/app/tags.php ( 1.16 KB )
/www/wwwroot/briline.net/app/common/behavior/InitBase.php ( 8.17 KB )
/www/wwwroot/briline.net/app/common.php ( 23.29 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Env.php ( 1.25 KB )
/www/wwwroot/briline.net/thinkphp/helper.php ( 17.86 KB )
/www/wwwroot/briline.net/app/function.php ( 0.78 KB )
/www/wwwroot/briline.net/app/extend.php ( 13.29 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Debug.php ( 7.06 KB )
/www/wwwroot/briline.net/app/common/model/Config.php ( 0.78 KB )
/www/wwwroot/briline.net/app/common/model/ModelBase.php ( 12.18 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Model.php ( 66.83 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Db.php ( 6.54 KB )
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/www/wwwroot/briline.net/thinkphp/library/think/db/Connection.php ( 29.97 KB )
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/www/wwwroot/briline.net/thinkphp/library/think/db/builder/Mysql.php ( 2.16 KB )
/www/wwwroot/briline.net/thinkphp/library/think/db/Builder.php ( 30.47 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Cache.php ( 6.17 KB )
/www/wwwroot/briline.net/thinkphp/library/think/cache/driver/File.php ( 7.46 KB )
/www/wwwroot/briline.net/thinkphp/library/think/cache/Driver.php ( 5.52 KB )
/www/wwwroot/briline.net/app/common/behavior/InitHook.php ( 1.25 KB )
/www/wwwroot/briline.net/app/common/model/Hook.php ( 0.77 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Lang.php ( 6.95 KB )
/www/wwwroot/briline.net/thinkphp/lang/zh-cn.php ( 3.85 KB )
/www/wwwroot/briline.net/app/route.php ( 0.91 KB )
/www/wwwroot/briline.net/app/index/config.php ( 0.96 KB )
/www/wwwroot/briline.net/app/index/common.php ( 0.68 KB )
/www/wwwroot/briline.net/app/index/controller/Wiki.php ( 2.44 KB )
/www/wwwroot/briline.net/app/index/controller/IndexBase.php ( 1.10 KB )
/www/wwwroot/briline.net/app/common/controller/ControllerBase.php ( 4.75 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Controller.php ( 6.20 KB )
/www/wwwroot/briline.net/thinkphp/library/traits/controller/Jump.php ( 4.97 KB )
/www/wwwroot/briline.net/thinkphp/library/think/View.php ( 6.86 KB )
/www/wwwroot/briline.net/thinkphp/library/think/view/driver/Think.php ( 5.61 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Template.php ( 46.46 KB )
/www/wwwroot/briline.net/thinkphp/library/think/template/driver/File.php ( 2.24 KB )
/www/wwwroot/briline.net/app/index/logic/Wiki.php ( 6.16 KB )
/www/wwwroot/briline.net/app/index/logic/IndexBase.php ( 0.79 KB )
/www/wwwroot/briline.net/app/common/logic/LogicBase.php ( 0.83 KB )
/www/wwwroot/briline.net/app/common/model/Article.php ( 0.78 KB )
/www/wwwroot/briline.net/app/common/model/ArticleTongji.php ( 0.79 KB )
/www/wwwroot/briline.net/thinkphp/library/think/paginator/driver/Bootstrap.php ( 5.90 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Paginator.php ( 9.45 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Collection.php ( 8.63 KB )
/www/wwwroot/briline.net/runtime/temp/ead4923c25a6b3f986358f7070f93dfa.php ( 56.51 KB )
/www/wwwroot/briline.net/thinkphp/library/think/Response.php ( 8.64 KB )
/www/wwwroot/briline.net/thinkphp/library/think/debug/Html.php ( 4.27 KB )

[ DB ] CONNECT:[ UseTime:0.028796s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.020350s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.019443s ]
[ 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:0.020262s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.019283s ]
[ 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:0.020538s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4452 LIMIT 1 [ RunTime:0.019596s ]
[ 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:0.019646s ]
[ 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:0.019750s ]
[ 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:0.020014s ]
[ 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` = 4452 LIMIT 1 [ RunTime:0.019256s ]
[ 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=4452 [ RunTime:0.022046s ]
[ 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:0.026294s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, '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:0.039927s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, '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:0.026093s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, '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:0.035777s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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