无法为服务器端文件上传创建有效的多部分格式

Question

我正在使用此代码将文件上传到Dwolla。因此，要上传文档/文件，我需要将其以多部分形式发送。

这是我的代码，

 const multipartFormData = async fileLocation => {
  let base64Data = "";
  await image2base64(fileLocation) // you can also to use url
    .then(response => {
      base64Data = response;
    });

  var boundary = "----" + new Date().getTime();
  var bodyString = [];
  bodyString.push(
    "--" + boundary,
    'Content-Disposition: form-data; name="' +
      "file" +
      '";' +
      'filename="' +
      "my_file.jpg" +
      '"',
    "Content-Type: " + "image/jpeg",
    "Content-Transfer-Encoding: base64",
    "", //need /r/n twice here
    base64Data.substring(23) //remove the data:image/jpeg;base64,
  );
  bodyString.push("--" + boundary + "--", "");
  var content = bodyString.join("\r\n");
  const reqBody = {
    documentType: "other",
    file: {
      content: content,
      headers: {
        "Content-Type": "multipart/form-data; boundary=" + boundary,
        "Content-Length": content.length
      }
    }
  };

  uploadDoc(reqBody);
};

但是，当我尝试上传它时，出现此错误：

{"status":415,"headers":{},"body":{"code":"UnsupportedRequestContentType","message":"Invalid request Content-Type. multipart/form-data."}}

任何人都可以帮助找到问题所在。