1、PHP 301 重定向代码
header(”HTTP/1.1 301 Moved Permanently”);
header(”Location: http://www.mvpec.com/articles/301/”);
exit();
header(”Location: http://www.mvpec.com/articles/301/”);
exit();
2、Apache301 重定向代码
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} ^mvpec.com [NC]
RewriteRule ^(.*)$ http://www.mvpec.com/$1 [L,R=301]
RewriteEngine on
RewriteCond %{HTTP_HOST} ^mvpec.com [NC]
RewriteRule ^(.*)$ http://www.mvpec.com/$1 [L,R=301]
2）重定向到新域名
Options +FollowSymLinks
RewriteEngine on
RewriteRule ^(.*)$ http://www.mvpec.com/$1 [L,R=301]
RewriteEngine on
RewriteRule ^(.*)$ http://www.mvpec.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=$1
RewriteEngine on
RewriteRule ^news-(.+)\.html$ news.php?id=$1
将news.php?id=123这样的地址转向到news-123.html
3、ASP 301重定向代码
<%@ Language=VBScript %>
<%
Response.Status=”301 Moved Permanently”
Response.AddHeader “Location”, “http://www.mvpec.com/articles/301/”
%>
<%
Response.Status=”301 Moved Permanently”
Response.AddHeader “Location”, “http://www.mvpec.com/articles/301/”
%>
4、ASP.Net 301重定向代码
<script runat=”server”>
private void Page_Load(object sender, System.EventArgs e)
{
Response.Status = “301 Moved Permanently”;
Response.AddHeader(”Location”,”http://www.mvpec.com/articles/301/“);
}
</script>
private void Page_Load(object sender, System.EventArgs e)
{
Response.Status = “301 Moved Permanently”;
Response.AddHeader(”Location”,”http://www.mvpec.com/articles/301/“);
}
</script>
5、Apache下vhosts.conf中配置301转向
为实现URL规范化，SEO通常将不带WWW的域名转向到带WWW域名，vhosts.conf中配置为：
<VirtualHost *:80>
ServerName www.mvpec.com
DocumentRoot /home/mvpec
</VirtualHost>
ServerName www.mvpec.com
DocumentRoot /home/mvpec
</VirtualHost>
<VirtualHost *:80>
ServerName lesishu.cn
RedirectMatch permanent ^/(.*) http://www.mvpec.com/$1
</VirtualHost>
ServerName lesishu.cn
RedirectMatch permanent ^/(.*) http://www.mvpec.com/$1
</VirtualHost>
6、JSP 301重定向代码
<%
response.setStatus(301);
response.setHeader( “Location”, “http://www.mvpec.com/” );
response.setHeader( “Connection”, “close” );
%>
response.setStatus(301);
response.setHeader( “Location”, “http://www.mvpec.com/” );
response.setHeader( “Connection”, “close” );
%>
7、CGI Perl 301重定向代码
$q = new CGI;
print $q->redirect(”http://www.new-url.com/”);
print $q->redirect(”http://www.new-url.com/”);
8、nginx 301重定向代码
把www.hxj.com和hxj.com合并，并把之前的域名也一并合并. 有两种实现方法,第一种方法是判断nginx核心变量host(老版本是http_host)：
server {
server_name www.hxj.com hxj.com ;
if ($host != 'www.hxj.com' ) {
rewrite ^/(.*)$ http://www.hxj.com/$1 permanent;
}
...
}
第二种方法：
server {
server_name hxj.com;
rewrite ^/(.*) http://www.hxj.com/$1 permanent;
}
这两种方法中， permanent是关键，详细说明见nginx重定向规则说明。
server {
server_name www.hxj.com hxj.com ;
if ($host != 'www.hxj.com' ) {
rewrite ^/(.*)$ http://www.hxj.com/$1 permanent;
}
...
}
第二种方法：
server {
server_name hxj.com;
rewrite ^/(.*) http://www.hxj.com/$1 permanent;
}
这两种方法中， permanent是关键，详细说明见nginx重定向规则说明。
last – 基本上都用这个Flag。
break – 中止Rewirte，不在继续匹配
redirect – 返回临时重定向的HTTP状态302
permanent – 返回永久重定向的HTTP状态301
break – 中止Rewirte，不在继续匹配
redirect – 返回临时重定向的HTTP状态302
permanent – 返回永久重定向的HTTP状态301
301转向情况检测
