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robots.txt文件有什么必要？

robots.txt文件是一個(gè)文本文件，用于向搜索引擎和其他機(jī)器人網(wǎng)站爬蟲(chóng)指定哪些頁(yè)面或內(nèi)容可以被爬取，哪些頁(yè)面或內(nèi)容不能被爬取。它的主要作用是為了控制搜索引擎和其他機(jī)器人網(wǎng)站爬蟲(chóng)訪問(wèn)和抓取網(wǎng)站內(nèi)容，保護(hù)網(wǎng)站的隱私和安全。如果一個(gè)網(wǎng)站不想被某些搜索引擎或爬蟲(chóng)訪問(wèn)、爬取和索引，就可以通過(guò)robots.txt文件來(lái)禁止它們。另外，robots.txt文件還可以防止一些機(jī)器人抓取出現(xiàn)線上攻擊或?yàn)E用等安全問(wèn)題。因此，對(duì)于任何一個(gè)網(wǎng)站來(lái)說(shuō)，編寫(xiě)一個(gè)有效的robots.txt文件都是非常必要的。

Public @ 2023-06-12 20:00:21

網(wǎng)站中死鏈接要怎么解決？

解決網(wǎng)站中死鏈接的方法可以包括以下幾種： 1. 找出死鏈接：通過(guò)使用在線鏈接檢查工具、網(wǎng)站分析工具或者掃描整個(gè)網(wǎng)站的程序，找出所有的死鏈接。這些工具能夠列出所有無(wú)法訪問(wèn)的鏈接。 2. 更新或修復(fù)鏈接：對(duì)于被標(biāo)記為死鏈接的頁(yè)面，在找到正確的URL后進(jìn)行更新，或者修復(fù)指向正確頁(yè)面的鏈接。如果無(wú)法找到新的頁(yè)面，則可以考慮刪除該鏈接。 3. 重定向鏈接：如果一個(gè)死鏈接指向的是刪除的頁(yè)面，可以通過(guò)設(shè)置

Public @ 2023-07-31 14:00:33

面包屑導(dǎo)航的原理與作用

面包屑（Breadcrumbs）是一種用于進(jìn)行網(wǎng)頁(yè)導(dǎo)航的UI設(shè)計(jì)技術(shù)，它將當(dāng)前頁(yè)面的位置信息清楚的提示給用戶，從而讓用戶在瀏覽網(wǎng)站時(shí)更加清晰，導(dǎo)航頁(yè)面更加便捷。面包屑導(dǎo)航的原理是類似于一個(gè)視覺(jué)式的系統(tǒng)路徑，它跟蹤其用戶當(dāng)前處于網(wǎng)站哪個(gè)部分，是用戶在當(dāng)前網(wǎng)頁(yè)或者瀏覽器窗口中顯示當(dāng)前頁(yè)面標(biāo)題以及它所處網(wǎng)站結(jié)構(gòu)位置的鏈?zhǔn)浇Y(jié)構(gòu)，它顯示用戶已經(jīng)在網(wǎng)站中瀏覽過(guò)的路線，并且可以像瀏覽這個(gè)路線一樣，把用戶

Public @ 2023-03-06 12:00:30

robots里這樣寫(xiě)，就能避免蜘蛛爬這個(gè)“index.htm”這個(gè)首頁(yè)？

威海seo專題威海Robots
926

要避免搜索引擎蜘蛛爬取某個(gè)頁(yè)面，可以在robots.txt文件中添加如下指令： User-agent: * Disallow: /index.htm 這樣，所有搜索引擎蜘蛛都不會(huì)爬取網(wǎng)站的index.htm首頁(yè)頁(yè)面。注意，這并不代表該頁(yè)面會(huì)從搜索結(jié)果中徹底移除，因?yàn)榧词箾](méi)有被索引，用戶仍然可以在搜索結(jié)果中找到該頁(yè)面。

Public @ 2023-06-09 00:50:07

通過(guò)robots.txt文件屏蔽蜘蛛抓取不存在的后綴

通過(guò)網(wǎng)站日志分析，會(huì)發(fā)現(xiàn)搜索引擎蜘蛛抓取了一些網(wǎng)站上不存在的文件后綴，如：.php、.asp、.aspx等。搜外網(wǎng)站后臺(tái)日志分析結(jié)果如下圖：image.搜外主站實(shí)際上不存在php后綴的URL地址。可通過(guò)robots.txt文件禁止蜘蛛抓取不存在的后綴，減少出現(xiàn)404返回值。在robots.txt文件填寫(xiě)屏蔽規(guī)則如下：Disallow: /*.asp$Disallow: /*.php$Disallo

Public @ 2015-07-18 16:09:24

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基本文件流程錯(cuò)誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.023744s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.017041s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 8824 LIMIT 1 [ RunTime:0.016262s ]
[ 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:0.016514s ]
[ 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:0.016787s ]
[ 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:0.017254s ]
[ 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` = 8824 LIMIT 1 [ RunTime:0.016023s ]
[ 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=8824 [ RunTime:0.018073s ]
[ 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:0.023289s ]
[ 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:0.037377s ]
[ 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:0.023278s ]
[ 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:0.032997s ]
[ 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', ) ]

0.456485s

Categories

Tags

robots.txt文件有什么必要？

網(wǎng)站中死鏈接要怎么解決？

面包屑導(dǎo)航的原理與作用

robots里這樣寫(xiě)，就能避免蜘蛛爬這個(gè)“index.htm”這個(gè)首頁(yè)？

通過(guò)robots.txt文件屏蔽蜘蛛抓取不存在的后綴

更多您感興趣的搜索

Categories

Tags

robots.txt文件有什么必要？

網(wǎng)站中死鏈接要怎么解決？

面包屑導(dǎo)航的原理與作用

robots里這樣寫(xiě)，就能避免蜘蛛爬這個(gè)“index.htm”這個(gè)首頁(yè)？

通過(guò)robots.txt文件屏蔽蜘蛛抓取不存在的后綴

更多您感興趣的搜索

robots.txt文件有什么必要？

robots里這樣寫(xiě)，就能避免蜘蛛爬這個(gè)“index.htm”這個(gè)首頁(yè)？