301重定向,也称为301转向。它的功能就是告诉搜索引擎,你的网址永久的变换了,从而将原网址的权重全部定向到新的网址上面,相信很多人都会用到301重定向的。
1、ASP下的301转向代码
<%@ Language=VBScript %>
<%
Response.Status=”301 Moved Permanently”
Response.AddHeader “Location”, “http://jzxue.com/”
%>
3、ASP.Net下的301转向代码
<script runat=”server”>
private void Page_Load(object sender, System.EventArgs e)
{
Response.Status = “301 Moved Permanently”;
Response.AddHeader(”Location”,”http://jzxue.com/“);
}
</script>
4、PHP下的301转向代码
header(”HTTP/1.1 301 Moved Permanently”);
header(”Location: http://jzxue.com/”);
exit();
5、CGI Perl下的301转向代码
$q = new CGI;
print $q->redirect(”http://jzxue.com/”);
6、JSP下的301转向代码
<%
response.setStatus(301);
response.setHeader( “Location”, “http://jzxue.com/” );
response.setHeader( “Connection”, “close” );
%>
7、Apache下301转向代码
新建.htaccess文件,输入下列内容(需要开启mod_rewrite):
1)将不带WWW的域名转向到带WWW的域名下
Options +FollowSymLinks
RewriteEngine on
RewriteCond %{HTTP_HOST} ^lesishu.cn [NC]
RewriteRule ^(.*)$ http://jzxue.com/$1 [L,R=301]
2)重定向到新域名
Options +FollowSymLinks
RewriteEngine on
RewriteRule ^(.*)$ http://jzxue.com/$1 [L,R=301]
3)使用正则进行301转向,实现伪静态
Options +FollowSymLinks
RewriteEngine on
RewriteRule ^news-(.+).html$ news.php?id=$1
将news.php?id=123这样的地址转向到news-123.html