文件ContentType

".asf" ContentType ="video/x-ms-asf"
".avi" ContentType ="video/avi"
".doc" ContentType ="application/msword"
".xls" ContentType ="application/vnd.ms-excel"
".pdf" ContentType ="application/pdf"
".ppt" ContentType ="application/vnd.ms-powerpoint"
".gif" ContentType ="image/gif"
".jpg" ContentType ="image/jpeg"
".jpe" ContentType ="image/jpeg"
"jpeg" ContentType ="image/jpeg"
".bmp" ContentType ="image/bmp"
".txt" ContentType ="application/text"
".txt" ContentType ="application/zip"
".zip" ContentType ="application/zip"
".wav" ContentType ="audio/wav"
".mp3" ContentType ="audio/mpeg3"
".mpg","mpeg" ContentType ="video/mpeg"
".rtf" ContentType ="application/rtf"
".htm","html" ContentType ="text/html"
".asp" ContentType ="text/asp"
other:  ContentType ="application/octet-stream"