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一、浏览器post表单提交

该提交方式只是提交普通表单；对于file组所选中的文件内容是不上传的，因此需要设置：enctype属性

enctype="multipart/form-data"

多部分提交方式，但注意编码问题：对于post方式，浏览器会对中文进行编码处理，发送字节，而普通组件的值得根据pageEncoding=”“的格式编码。但是对于文件，是会检测文件本身的编码格式进行编码。

二、input:file属性

1、上传文件–限制类型

注意：使用”* “会导致谷歌浏览器响应延迟，对IE和火狐没有影响

常用：

• 视频：video/*
• 音频：audio/*
• gif图片：image/gif
• 只允许上传wav(一般用于铃声上传)：.wav
• excel文件：application/msexcel
• word文件：application/msword
• zip文件：application/zip
• text文件：text/plain
• js文件：text/javascript，application/javascript

2、multiple

多文件上传

3、 谷歌–上传文件夹

4、常用MIME类型

后缀名       MIME名称*.3gpp    audio/3gpp, video/3gpp*.ac3    audio/ac3*.asf       allpication/vnd.ms-asf*.au           audio/basic*.css           text/css*.csv           text/csv*.doc    application/msword    *.dot    application/msword    *.dtd    application/xml-dtd    *.dwg    image/vnd.dwg    *.dxf      image/vnd.dxf*.gif            image/gif    *.htm    text/html    *.html    text/html    *.jp2            image/jp2    *.jpe       image/jpeg*.jpeg    image/jpeg*.jpg          image/jpeg    *.js       text/javascript, application/javascript    *.json    application/json    *.mp2    audio/mpeg, video/mpeg    *.mp3    audio/mpeg    *.mp4    audio/mp4, video/mp4    *.mpeg    video/mpeg    *.mpg    video/mpeg    *.mpp    application/vnd.ms-project    *.ogg    application/ogg, audio/ogg    *.pdf    application/pdf    *.png    image/png    *.pot    application/vnd.ms-powerpoint    *.pps    application/vnd.ms-powerpoint    *.ppt    application/vnd.ms-powerpoint    *.rtf            application/rtf, text/rtf    *.svf           image/vnd.svf    *.tif         image/tiff    *.tiff       image/tiff    *.txt           text/plain    *.wdb    application/vnd.ms-works    *.wps    application/vnd.ms-works    *.xhtml    application/xhtml+xml    *.xlc      application/vnd.ms-excel    *.xlm    application/vnd.ms-excel    *.xls           application/vnd.ms-excel    *.xlt      application/vnd.ms-excel    *.xlw      application/vnd.ms-excel    *.xml    text/xml, application/xml    *.zip            aplication/zip    *.xlsx     application/vnd.openxmlformats-officedocument.spreadsheetml.sheet