apache、iis、nginx设置301重定向

apache

<IfModule mod_rewrite.c>
      RewriteEngine On
      RewriteCond %{HTTP_HOST} ^xxxx1.com$ [NC,OR] 
      RewriteCond %{HTTP_HOST} ^xxxx2.com$ [NC]
#      RewriteCond %{HTTP_HOST} ！^www.xxxx1.com$ [NC]
      RewriteRule ^(.*)$ http://www.xxxx1.com/$1 [R=301,L]
</IfModule>

iis

ii6通过isapi重写组件
RewriteCond %{HTTP:Host} ^xxxx1.com$ [NC] 
RewriteCond %{HTTP:Host} ^xxxx2.com$ [NC] 
RewriteRule (.*) http://www.xxxx1.com$1 [NC,R=301]

iis7以上web.config
 <?xml version="1.0" encoding="UTF-8"?>
       <configuration>
          <system.webServer>
             <rewrite>
                <rules>
                  <rule name="301Redirect" stopProcessing="true">
                    <match url="(.*)" />
                    <conditions logicalGrouping="MatchAny">
                        <add input="{HTTP_HOST}" pattern="^xxxx1.com$" />
                        <add input="{HTTP_HOST}" pattern="^xxxx2.com$" />
                    </conditions>
                    <action type="Redirect" url="http://www.xxxx1.com/{R:0}" redirectType="Permanent" />
                </rule>
            </rules>
         </rewrite>
       </system.webServer>
  </configuration>

nginx

添加到配置文件server段内
server
{
listen 80;
server_name abc.com;
rewrite ^(.*) http://www.abc.com$1 permanent;
}

if ($host != 'www.abc.com' ) {
rewrite ^/(.*)$ http://www.abc.com/$1 permanent;
}