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
