上传文件设置accept的MIME 类型

[Tronzo]

xslx文件

.dotx：application/vnd.openxmlformats-officedocument.wordprocessingml.template
.docx：application/vnd.openxmlformats-officedocument.wordprocessingml.document
.xlsx：application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
.pptx：application/vnd.openxmlformats-officedocument.presentationml.presentation
.doc：application/msword
.dot：application/msword
.xls：application/vnd.ms-excel

File Extension	Identification	MIME Type
Image	----	----
jpe, jpeg, jpg	JPEG image	image/jpeg
png	Portable Network Graphic	image/png
bmp	Bitmap	image/bmp
xslx	----	----