IIS7如何设置301重定向详解

<?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="^xxx.com$" />
          </conditions>
          <action type="Redirect" url="http://www.xxx.com/{R:0}" redirectType="Permanent" />
        </rule>
      </rules>
    </rewrite>
  </system.webServer>
</configuration>

实现的效果是xxx.com访问时跳转到www.xxx.com