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robots.txt使用教程

robots.txt 是一個(gè)文本文件，用于指示搜索引擎爬蟲哪些頁面可以被抓取，哪些頁面不應(yīng)該被抓取。在建立一個(gè)網(wǎng)站時(shí)，可以通過 robots.txt 控制搜索引擎爬蟲對(duì)網(wǎng)站的訪問，以達(dá)到更好的SEO效果。以下是robots.txt的使用教程。步驟1：新建 robots.txt 文件在網(wǎng)站的根目錄下，新建一個(gè)名為 robots.txt 的文本文件。步驟2：編輯 robots.txt 文件編輯 robots.txt 文件，指示搜索引擎爬蟲哪些頁面可以被抓取，哪些頁面不應(yīng)該被抓取。 1.指示所有搜索引擎不抓取任何網(wǎng)頁 User-agent: * Disallow: / 2.指示所有搜索引擎抓取所有網(wǎng)頁 User-agent: * Disallow: 3.指示某些搜索引擎不抓取某些網(wǎng)頁 User-agent: Baidu Disallow: /private/ User-agent: Googlebot Disallow: /test/ 4.指定抓取頻率 User-agent: * Disallow: Crawl-delay: 5 5.添加注釋在 robots.txt 文件中添加注釋，以便其他人更好地理解你的設(shè)置。 # This is an example robots.txt file # It prevents all search engines from indexing your site 步驟3：上傳 robots.txt 文件連接 FTP 服務(wù)器，將編輯好的 robots.txt 文件上傳到網(wǎng)站的根目錄下。步驟4：驗(yàn)證robots.txt文件是否生效在瀏覽器中輸入網(wǎng)站地址，后面加上 /robots.txt，如：http://www.example.com/robots.txt，打開文件查看是否生效。總的來說，robots.txt 是一個(gè)非常有用的工具，可以讓我們更好地控制搜索引擎抓取我們網(wǎng)站的頁面，從而達(dá)到更好的SEO效果。

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

404頁面是什么？

404頁面是客戶端在瀏覽網(wǎng)頁時(shí)，服務(wù)器無法正常提供信息，或是服務(wù)器無法回應(yīng)，且不知道原因所返回的頁面。據(jù)說在第三次科技革命之前，互聯(lián)網(wǎng)的形態(tài)就是一個(gè)大型的中央數(shù)據(jù)庫，這個(gè)數(shù)據(jù)庫就設(shè)置在404房間里面。那時(shí)候所有的請(qǐng)求都是由人工手動(dòng)完成的，如果在數(shù)據(jù)庫中沒有找到請(qǐng)求者所需要的文件，或者由于請(qǐng)求者寫錯(cuò)了文件編號(hào)，用戶就會(huì)得到一個(gè)返回信息：room 404 : file not found。404錯(cuò)誤信

Public @ 2014-05-13 16:11:01

網(wǎng)址規(guī)范化問題

網(wǎng)站出現(xiàn)多個(gè)不規(guī)范網(wǎng)址會(huì)給搜索引擎收錄和排名帶來很多麻煩。網(wǎng)址規(guī)范化造成的幾個(gè)問題：?CMS系統(tǒng)在不同地方鏈接到不同的URL，分散了頁面權(quán)重，不利于排名。?復(fù)制內(nèi)容過多，搜索引擎可能認(rèn)為有作弊嫌疑。?外部鏈接也可能指向不同URL，分散權(quán)重。?搜索引擎把資源花在收錄不規(guī)范的網(wǎng)址上，留下給獨(dú)特內(nèi)容的資源就減少了。?搜索引擎判斷的規(guī)范化網(wǎng)址不是站長(zhǎng)想要的那個(gè)網(wǎng)址。來源：搜外網(wǎng)

Public @ 2013-03-06 16:11:22

什么是meta robots 標(biāo)簽？meta robots 標(biāo)簽的寫法

網(wǎng)站上有些頁面不希望被搜索引擎收錄，我們可以使用robots的文件或者meta robots 標(biāo)簽。什么是meta robots 標(biāo)簽？meta robots 標(biāo)簽是頁面head部分meta標(biāo)簽的一種，用于指令搜索引擎禁止索引（收錄）本頁內(nèi)容。meta robots 標(biāo)簽的寫法：<meta name=”robots”content=”noindex,nofollow”>標(biāo)簽的意義：禁止

Public @ 2012-07-08 16:09:26

robots.txt文件的格式

User-agent: [robot名稱] Disallow: [禁止存取的目錄或檔案] Allow: [允許存取的目錄或檔案] Sitemap: [網(wǎng)站地圖檔案位置] 注意事項(xiàng)： - User-agent：要設(shè)定的是區(qū)分搜索引擎的機(jī)器人，可設(shè)定多個(gè)。若不加此欄位，則視為通用設(shè)定。 - Disallow：機(jī)器人不可存取的目錄或檔案，在此設(shè)定時(shí)，要注意目錄名稱或檔案名稱是完整的，不

Public @ 2023-06-17 03:50:39

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基本文件流程錯(cuò)誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.022644s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016341s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 7380 LIMIT 1 [ RunTime:0.015951s ]
[ 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:0.015759s ]
[ 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:0.015937s ]
[ 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:0.016678s ]
[ 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` = 7380 LIMIT 1 [ RunTime:0.015366s ]
[ 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=7380 [ RunTime:0.018741s ]
[ 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:0.022694s ]
[ 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` = '威海網(wǎng)站結(jié)構(gòu)優(yōu)化' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.036816s ]
[ 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:0.022633s ]
[ 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:0.032889s ]
[ 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', ) ]

0.463629s

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Categories

Tags

robots.txt使用教程

404頁面是什么？

網(wǎng)址規(guī)范化問題

什么是meta robots 標(biāo)簽？meta robots 標(biāo)簽的寫法

robots.txt文件的格式

更多您感興趣的搜索

国产成人精品999视频&日本一区二区亚洲人妻精品&久久久精品国产99久久精&99热这里只有成人精品国产&精品国产剧情av一区二区&成人亚洲精品久久久久app&国产精品美女高潮抽搐A片

Categories

Tags

robots.txt使用教程

404頁面是什么？

網(wǎng)址規(guī)范化問題

什么是meta robots 標(biāo)簽？meta robots 標(biāo)簽的寫法

robots.txt文件的格式

更多您感興趣的搜索

什么是meta robots 標(biāo)簽？meta robots 標(biāo)簽的寫法