jQueryFileUpload-S3-空文件上传结果错误

Question

我正在尝试使用jQuery File Upload库（https://github.com/blueimp/jQuery-File-Upload/wiki/Upload-directly-to-S3）设置S3直接上传。我正在使用其最新版本，这是初始化插件的方法：

$(function() {
  $("#s3-uploader").data(
    "key",
    $("#s3-uploader")
      .find("input[name='key']")
      .val()
  );
  var settings = { path: "" };
  $("#s3-uploader").fileupload({
    limitConcurrentUploads: 1,
    acceptFileTypes: /(\.|\/)(gif|jpe?g|png)$/i,
    dataType: "xml",
    paramName: "file",
    formData: function(form) {
      var data, fileType, key;
      data = form.serializeArray();
      fileType = "";
      if ("type" in this.files[0]) {
        fileType = this.files[0].type;
      }
      data.push({
        name: "content-type",
        value: fileType
      });
      key = $("#s3-uploader")
        .data("key")
        .replace("{timestamp}", new Date().getTime())
        .replace("{unique_id}", this.files[0].unique_id);
      data[1].value = settings.path + key;
      if (!("FormData" in window)) {
        $("#s3-uploader")
          .find("input[name='key']")
          .val(settings.path + key);
      }
      return data;
    }
  });
});

这是我为满足S3要求而发送的额外表格数据：

<input name="utf8" type="hidden" value="✓">
<input type="hidden" name="key" id="key" value="uploads/{timestamp}-{unique_id}-4c9ded19e2649ab92c6d37e6e30e679a/${filename}">
<input type="hidden" name="acl" id="acl" value="public-read">
<input type="hidden" name="AWSAccessKeyId" id="AWSAccessKeyId" value="<KEY>">
<input type="hidden" name="policy" id="policy" value="<POLICY>">
<input type="hidden" name="signature" id="signature" value="JOK4zvx/jAJbUXHzWGGUJ8pxk5E=">
<input type="hidden" name="success_action_status" id="success_action_status" value="201">
<input type="hidden" name="X-Requested-With" id="X-Requested-With" value="xhr">

上载正确，并且文件在S3中可用，但是上载引发此错误：Empty file upload result

来自S3的响应是XML文档：

<PostResponse><Location>htps://my-bucket.s3-accelerate.amazonaws.com/uploads%2F1583345823865-undefined-4c9ded19e2649ab92c6d37e6e30e679a%2F_102035t8.JPG</Location><Bucket>my-bucket</Bucket><Key>uploads/1583345823865-undefined-4c9ded19e2649ab92c6d37e6e30e679a/_1020358.JPG</Key><ETag>"c77b13bec857d9470f360b363f7fb045"</ETag></PostResponse>

我如何使jQuery File Upload处理来自S3的此响应并将其视为成功并解析S3 URL？谢谢！

Answer 1

看起来像jQuery File Upload不能单独处理这种情况。也就是说，它不会解析S3返回的XML文档。我从s3_direct_upload gem借了一些代码来完成工作。您可以在这里找到它：https://github.com/waynehoover/s3_direct_upload/blob/master/app/assets/javascripts/s3_direct_upload.js.coffee#L72