Javascript 将音频记录从js发送到activxweb服务器以保存到磁盘

目前正在try 将一些录制的音频从浏览器发送到Actix-Web服务器，并try 将其保存到磁盘，从而从通用媒体播放器中生成可播放的曲目.我发现这很难做到，特别是因为我以前从未与媒体合作过.我所做的一切都基于一些谷歌搜索和一些GPT的结合. 问题:文件似乎确实已保存到磁盘上.这是一个非零大小的文件，但似乎无法在SLC媒体播放器中播放. 将录音发送到Actix-Web服务器的脚本:

const blob = new Blob(chunks, { type: "audio/mp3" });
  const audioURL = URL.createObjectURL(blob);
  const audio = new Audio(audioURL);

  // create a button
  let button = document.createElement("BUTTON");
  // creating text to be
  //displayed on button
  let text = document.createTextNode("Play recording ", audio_rec_num + 1);
  button.appendChild(text);
  button.setAttribute("num", audio_rec_num);

  audio_rec_num++;
  document.body.appendChild(button);
  button.addEventListener("click", function () {
    let num = Number(button.getAttribute("num"));

    // audio_chunks[num].play();

    // Create FormData object to send the audio data
    const formData = new FormData();
    formData.append("audio", blob, "recorded_audio.mp3");

    // Send the audio data to the server using fetch or XMLHttpRequest
    fetch("http://127.0.0.1:8080/track_sample", {
      method: "POST",
      body: formData,
    })
      .then((response) => {
        if (response.ok) {
          console.log("Audio sent successfully");
        } else {
          console.error("Failed to send audio");
        }
      })
      .catch((error) => {
        console.error("Error sending audio: ", error);
      });
  });

接收数据的处理程序:

async fn track_sampler(req_body: web::Bytes) -> impl Responder {
println!("track sampler hit");
let audio_data = req_body.to_vec();
println!("Received audio data with length: {}", audio_data.len());

// Save the audio data to a WAV file
let file_path = "received_audio.mp3";
let mut file = match File::create(file_path) {
    Ok(file) => file,
    Err(_) => return HttpResponse::InternalServerError().finish(),
};

// Write the bytes of the audio file to the file on disk
if let Err(_) = file.write_all(&audio_data) {
    return HttpResponse::InternalServerError().finish();
}
println!("done");
// Return a success response
HttpResponse::Ok().body("Audio file uploaded successfully")

}

我只需要一些明确的指针就能实现这一点.我不一定需要代码，但这也可能非常有帮助.我做错了什么？我知道我保存得不正确，但如何"正确"呢？

注意:我不希望直接从JS将音频保存到磁盘