Apache 301 redirection and redirection rules

The apache host uses the htaccess file to implement 301 Redirection. First, check the following code:

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RewriteEngine on RewriteCond % {HTTP_HOST} ^ (aaa.org) (: 80 )? [NC] RewriteRule ^ (. *) http://www.aaa.com/#1 [R = 301, L]

For R = 301, L is the redirection parameter. Here, R can write numbers or words, so R = permanent can also be written to indicate permanent redirection. L indicates that the rewrite operation is stopped.

Permanent returns a permanent redirect status code (301), indicating that the location change of the resource is permanent.

We may see another way of writing during redirection.

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Redirect 301/old.html http://www.xxxx.org/new.html Redirect permanent/one http://www.xxxx.org/two RedirectMatch 301 (. * pai.gif $ yun_qi_img/ww2.xxxx.org

Next we will introduce the Linux/unix server, which is limited to 301 of the two types of servers.

Redirect domain name 301 without www to domain name with www
Create a. htaccess file and add the following code:

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RewriteEngine On RewriteCond % {HTTP_HOST }! ^ Www.url.com $ [NC] RewriteRule ^ (. *) $ http://www.url.com/#1 [L, R = 301]

Apache 301 redirects to a single url

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RewriteEngine On Redirect permanent/old-directory/old-file.html http://www.url.com/new-directory/new-file.html

Php 301 redirection

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<? Header ("HTTP/1.1 301 Moved Permanently "); Header ("Location: http://www.url.com "); ?>

Nginx 301 redirection

Add the following filter rules and rewrite rules to the Nginx configuration file:
First case: Access Site A and direct it to site B

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Server { Server_name www.A.com; Rewrite ^ (. *) http://www. B .com $1 permanent; }

Case 2: not redirect all accesses to the specified page

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Server { Server_name www.A.com; If ($ host! = 'A. Com '){ Rewrite ^/(. *) $ http://www. B .com/#1 permanent; } }