在web.config中加入rewrite规则 
格式如下: 
<system.webServer> 		 <security> 		  <requestFiltering allowDoubleEscaping="true"></requestFiltering>       		</security>         <directoryBrowse enabled="false" />         <defaultDocument>             <files>                 <clear />                 <add value="index.htm" />                 <add value="index.html" />                 <add value="iisstart.htm" />             </files>         </defaultDocument> 		<rewrite> 			<rules> 				<rule name="Forbid image"> 				<match url="^.*comicdata.*.(txt|doc|gif|jpg|jpeg|png|mp3|flv|swf)$" ignoreCase="true" /> 				<conditions> 				<add input="{HTTP_REFERER}" pattern="^http://(www.)?yzmanga.com/.*$" negate="true" /> 				<add input="{REMOTE_ADDR}" pattern="221.232.16.*" negate="true" /> 				</conditions> 				<action type="Rewrite" url="/static/image/common/logo.png" /> 				</rule> 			</rules> 		</rewrite>     </system.webServer> |