怎么做301重定向
2011-03-19 at 05:38 下午 宽宽非常经典的内容，经常有新人问，省的他们翻搜索引擎了。
1、IIS下301设置
Internet信息服务管理器 -> 虚拟目录 -> 重定向到URL，输入需要转向的目标URL，并选择"资源的永久重定向"。
2、ASP下的301转向代码
- <%@ Language=VBScript %>
- <%
- Response.Status=”301 Moved Permanently”
- Response.AddHeader “Location”, “http://www.kuankuan.net/2011/03/19/how-to-do-a-301-redirect/”
- %>
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://www.kuankuan.net/2011/03/19/how-to-do-a-301-redirect/“);
- }
- </script>
- ?>
4、PHP下的301转向代码
- header(”HTTP/1.1 301 Moved Permanently”);
- header(”Location: http://www.kuankuan.net/2011/03/19/how-to-do-a-301-redirect/”);
- exit();
- ?>
5、CGI Perl下的301转向代码
- $q = new CGI;
- print $q->redirect(”http://www.kuankuan.net/”);
- ?>
6、JSP下的301转向代码
- <%
- response.setStatus(301);
- response.setHeader( “Location”, “http://www.kuankuan.net/” );
- response.setHeader( “Connection”, “close” );
- %>
- ?>
7、Apache下301转向代码
新建.htaccess文件，输入下列内容（需要开启mod_rewrite）：
1）将不带WWW的域名转向到带WWW的域名下
- Options +FollowSymLinks
- RewriteEngine on
- RewriteCond %{HTTP_HOST} ^kuankuan.cn [NC]
- RewriteRule ^(.*)$ http://www.kuankuan.net/$1 [L,R=301]
2）重定向到新域名
- Options +FollowSymLinks
- RewriteEngine on
- RewriteRule ^(.*)$ http://www.kuankuan.net/$1 [L,R=301]
3）使用正则进行301转向，实现伪静态
- Options +FollowSymLinks
- RewriteEngine on
- RewriteRule ^news-(.+)\.html$ news.php?id=$1
将news.php?id=123这样的地址转向到news-123.html
8、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.kuankuan.cn
- DocumentRoot /home/kuankuan
- </VirtualHost>
- <VirtualHost *:80>
- ServerName kuankuan.cn
- RedirectMatch permanent ^/(.*) http://www.kuankuan.net/$1
- </VirtualHost>
Apache下除了以上2种方法，还有其他配置方法和可选参数，建议阅读Apache文档。
301转向情况检测
http://www.seoconsultants.com/tools/headers.asp
http://www.internetofficer.com/seo-tool/redirect-check/
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