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robots.txt文件放在哪里?

robots.txt文件應(yīng)該放置在網(wǎng)站根目錄下。舉例來說，當(dāng)spider訪問一個網(wǎng)站（比如 http://www.abc.com）時，首先會檢查該網(wǎng)站中是否存在http://www.abc.com/robots.txt這個文件，如果 Spider找到這個文件，它就會根據(jù)這個文件的內(nèi)容，來確定它訪問權(quán)限的范圍。

網(wǎng)站 URL

相應(yīng)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

來源：百度搜索資源平臺百度搜索學(xué)堂

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

怎樣靜態(tài)化URL

常見的方法是使用服務(wù)器的URL重寫模塊，在LAMP(Linux+Apache+MySQL+PHP)服務(wù)器上一般使用mod_rewrite模塊，Windows服務(wù)器也有功能相似的ISAPI Rewrite等模塊。以LAMP服務(wù)器為例，要想把URL：http://www.seowhy.com/products.php?id=$123靜態(tài)化為：http://www.seowhy.com/products

Public @ 2019-02-17 16:11:07

錨文本鏈接是什么？

錨文本鏈接，簡稱錨文本，又叫關(guān)鍵詞鏈接，是鏈接的一種展現(xiàn)形式。錨文本和超鏈接類似，超鏈接是直接鏈接形式，如 https://www.seowhy.com/a/227.html錨文本是給一個關(guān)鍵詞做一個鏈接，指向別的網(wǎng)頁，例子如：SEO第二個例子：學(xué)SEO需要多長時間這樣可以點擊的文字，就是一個錨文本。錨文本是文本關(guān)鍵詞與URL鏈接整合在一起狀態(tài)名稱。如果給一個圖片做一個鏈接，則叫圖片

Public @ 2017-10-08 16:11:32

設(shè)置搜索robots協(xié)議的后果

設(shè)置搜索robots協(xié)議的后果針對短視頻類內(nèi)容，視頻搜索將不再索引、展現(xiàn)網(wǎng)站的視頻資源，歷史已索引部分會從搜索中屏蔽。若設(shè)置部分目錄不希望被收錄，該目錄下內(nèi)容將從搜索中屏蔽，其余內(nèi)容在搜索中則以正常結(jié)果展示。來源：百度搜索資源平臺

Public @ 2021-05-12 16:09:00

Robots文件的作用和規(guī)范寫法

控制頁面的抓取、索引是SEO優(yōu)化網(wǎng)站結(jié)構(gòu)時經(jīng)常需要用到的技術(shù)。常見的工具包括：robots文件頁面的noindex標(biāo)簽鏈接的nofollow屬性頁面的301轉(zhuǎn)向頁面的canonical標(biāo)簽等這幾個工具各有各的特定應(yīng)用場景，但都是用于控制網(wǎng)站內(nèi)部結(jié)構(gòu)，之間容易混淆，還經(jīng)常需要配合使用，SEO們必須準(zhǔn)確理解這幾個工具的機制和原理，不然很容易出錯。這篇貼子討論robots文件。Robots文件的作用ro

Public @ 2012-12-30 16:09:20

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基本文件流程錯誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.023462s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.015513s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.014474s ]
[ 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:0.016407s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.014619s ]
[ 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:0.015333s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4379 LIMIT 1 [ RunTime:0.017563s ]
[ 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:0.014986s ]
[ 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:0.016215s ]
[ 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:0.015787s ]
[ 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:0.014505s ]
[ 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:0.019638s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海網(wǎng)站結(jié)構(gòu)優(yōu)化' AND `status` <> -1 LIMIT 1 [ RunTime:0.023302s ]
[ 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` = '威海網(wǎng)站結(jié)構(gòu)優(yōu)化' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.036523s ]
[ 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:0.022113s ]
[ 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:0.033436s ]
[ 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', ) ]

0.525499s