为了正确处理word 等格式，你需要在HTML文件中设置好该文件类型，比如：
<meta http-equiv="Content-Type" content="application/msword">
　　还有其它经常设置的文件类型：
application/msword Microsoft Word Document
application/pdf PDF Document
application/wordperfect6.0 WordPerfect 6.0 Document
application/zip ZIP archive
audio/x-wav WAV audio format
audio/midi MIDI audio format
audio/x-pn-realaudio RealAudio
image/gif GIF image format
image/jpeg JPEG image format
image/png PNG image format
text/html HTML document
text/plain Plain text
video/mpeg MPEG video format
video/quicktime QuickTime video format
video/x-msvideo AVI video format