如何使用量角器上传filepicker中的文件？

Here is HTML code:

这是HTML代码：

<input type="file" class="fileUploadInput" name="fileUpload" id="fileUploadInput" accept="application/msword,application/pdf,text/plain,application/rtf,application/vnd.openxmlformats-officedocument.wordprocessingml.document,application/vnd.oasis.opendocument.formula" multiple="multiple" title="Choose File">
<input typ