<form name="form" id="form" method="post" enctype="multipart/form-data">

     <input type="file" name="upload" id="upload"style="display: none;"

         onchange="document.form.path.value=this.value" multiple="multiple" accept=".xls,.xlsx,.csv" />

     <input name="path" id="path" readonly>

     <input type="button" value="医路通数据文件上传" onclick="document.form.upload.click()">

</form>