<form id="uploadFileForm2" name="uploadFileForm2" enctype="multipart/form-data" method="post">
    <div class="upload-wapper mt20">
        <input type="file" name="excelfile" id="dataFile" class="dataFile" accept="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" />
        <a href="javascript:;" id="uploadFile" class="upload-file">上传文件</a>
        <div id="J_progress_label"></div>
    </div>
</form>

// 保存导入
$("#uploadFile").click(function(){
    $("#dataFile").click()
})