在IE中打开visio文件乱码求助
我在IE中打开word和excel都可以正常显示,但打开.vsd文件就是乱码 
 web.xml文件配置如下: 
  <?xml   version= "1.0 "   encoding= "UTF-8 "?>  
  <web-app>  
 	 <mime-mapping>  
 		 <extension> xls </extension>  
 		 <mime-type> application/octet-stream </mime-type>  
 	 </mime-mapping>  
 	 <mime-mapping>  
 		 <extension> doc </extension>  
 		 <mime-type> application/msword </mime-type>  
 	 </mime-mapping>  
 	 <mime-mapping>  
 		 <extension> vsd </extension>  
 		 <mime-type> application/x-vsd </mime-type>  
 	 </mime-mapping>    
  </web-app>  
 中 
  <mime-mapping>  
  <extension> vsd </extension>  
  <mime-type> application/x-vsd </mime-type>  
  </mime-mapping>  
 中的 <mime-type> application/x-vsd </mime-type>  
 我换成application/vnd.visio也不行     
 jsp文件 
  <%@   page   language= "java "   pageEncoding= "GBK " 
 	contentType= "text/html;   charset=GBK "%>    
  <html>  
  <head>  
 	 <title> open </title>  
  <meta   http-equiv= "content-type "   content= "text/html;charset=GBK ">  
  </head>  
  <body>  
  <a   href= "# "   onclick= "document.location= 'file/dd.doc ' "> word </a>  
  <a   href= "# "   onclick= "document.location= 'file/vv.vsd ' "> vsd </a>  
  <a   href= "# "   onClick= "document.location= 'file/xx.xls ' "> excel </a>  
  </body>  
  </html>    
 请问各位有什么解决办法
------解决方案--------------------安装了visio,并且这个viso关联了这个后缀名了吗?