<form action="/" method="post" enctype="multipart/form-data">
<div>
<input class="layui-btn" type="file" multiple="multiple" accept="image/*" name="image">
</div>
<div style="margin-top:10px;">
<input type="submit" value="上传" class="layui-btn">
</div>
</form>
enctype="multipart/form-data"必须写