请问如何动态判断MIME的类型

Question

要在IE6.0中打开不同类型的文件，文件类型有doc,xls,ppt,pdf,swf,jpg图片等，假设客户端已安装了相应的应用程序，现在需要动态判断文件并设置的MIME类型，请问有做过的吗？急待解决！！

Answer 1

在web.xml文件中加入
         <mime-mapping> 
<extension>doc</extension>
<mime-type>application/msword</mime-type> 
</mime-mapping> 
<mime-mapping> 
<extension>xls</extension> 
<mime-type>application/msexcel</mime-type> 
</mime-mapping> 
<mime-mapping> 
<extension>pdf</extension> 
<mime-type>application/pdf</mime-type> 
</mime-mapping>
<mime-mapping> 
<extension>zip</extension> 
<mime-type>application/zip</mime-type> 
</mime-mapping>
<mime-mapping> 
<extension>rar</extension> 
<mime-type>application/rar</mime-type> 
</mime-mapping>
<mime-mapping> 
<extension>txt</extension> 
<mime-type>application/txt</mime-type> 
</mime-mapping>
<mime-mapping> 
<extension>chm</extension> 
<mime-type>application/mshelp</mime-type>
</mime-mapping>