All languages, server 301 Jump Code Complete _ Other comprehensive

301 jump is usually used in the site to change the domain name and to maintain the unity of the links used. For example, your original domain name www.a.com now replaced www.b.com, with 301 jump, Access www.a.com/about.html will automatically become www.b.com/about.html. Let's take a look at the code set 301 to facilitate the novice:

301 Jump Code Complete (asp| php| jsp|. NET)

1, IIS under 301 settings

Internet Information Services Manager-> virtual directory-> redirect to URL, enter the destination URL that needs to be redirected, and select Permanent redirect for resources

2, ASP under the 301 steering code

Copy Code code as follows:

<%@ Language=vbscript%>
<%
Response.status= "Moved Permanently"
Response.AddHeader "Location", "http://www.jb51.net/"
%>

3, ASP. NET 301 Steering Code

Copy Code code as follows:

<script runat= "Server" >
private void Page_Load (object sender, System.EventArgs e)
{
Response.Status = "Moved Permanently";
Response.AddHeader ("Location", "http://www.jb51.net/");
}
</script>

4, PHP under the 301 steering Code

Copy Code code as follows:

Header ("http/1.1 moved Permanently");
Header ("location:http://www.jb51.net/");
Exit ();

5, CGI Perl under the 301 steering Code

Copy Code code as follows:

$q = new CGI;
Print $q->redirect ("http://www.jb51.net/");

6, JSP under the 301 steering Code

Copy Code code as follows:

<%
Response.setstatus (301);
Response.setheader ("Location", "http://www.jb51.net/");
Response.setheader ("Connection", "close");
%>

7, Apache under the vhosts.conf configuration 301 Turn

In order to achieve URL normalization, SEO will usually change the domain name without www to the WWW domain name, vhosts.conf is configured as:

Copy Code code as follows:

<virtualhost *:80>
ServerName www.jb51.net
DocumentRoot
</VirtualHost>
<virtualhost *:80>
ServerName jb51.net
Redirectmatch permanent ^/(. *) http://www.jb51.net/$1
</VirtualHost>

8, Apache under 301 turn Code

Create a new. htaccess file and enter the following (you need to turn on mod_rewrite):

1 Change the domain name without www to the domain name with www

Copy Code code as follows:

Options +followsymlinks
Rewriteengine on
Rewritecond%{http_host} ^jb51.net [NC]
Rewriterule ^ (. *) $ http://www.jb51.net/$1 [l,r=301]

2 Redirect to new domain

Copy Code code as follows:

Options +followsymlinks
Rewriteengine on
Rewriterule ^ (. *) $ http://www.jb51.net/$1 [l,r=301]

3) using regular 301 steering to achieve pseudo static

Copy Code code as follows:

Options +followsymlinks
Rewriteengine on
Rewriterule ^news-(. +) \.html$ news.php?id=$1

Turn news.php?id=123 Such an address to news-123.html

Finally: When using the 301 Permanent redirect command to have multiple domain names point to the site's main domain name, it will not have any negative impact on the ranking of the site. I hope it will help you.