gistfile1.txt

    <div class="imageContent" title="图片内容" style="width: 840px;">
      <form method="POST" action="http://v0.api.upyun.com/pic-sandbox/" enctype="multipart/form-data">
        {{#with upyun}}
        <input name="policy" value={{policy}} type="hidden">
        <input name="signature" value={{signature}} type="hidden">
        <input type="file" name="file">
        <input type="submit" name="upload">
        {{/with}}
      </form>
    </div>