从客户端发送文件后，文件是否被正确读取？

Question

我正试图从用户的麦克风中获取一个音频文件，当我试图将它发送到服务器下载时，它会不断出错。

这是我的js代码来获取音频

navigator.mediaDevices.getUserMedia({audio:true})
      .then(stream => {handlerFunction(stream)})


            function handlerFunction(stream) {
            rec = new MediaRecorder(stream);
            rec.ondataavailable = e => {
              audioChunks.push(e.data);
              if (rec.state == "inactive"){
                let blob = new Blob(audioChunks,{type:'audio/mpeg-3'});
                recordedAudio.src = URL.createObjectURL(blob);
                recordedAudio.controls=true;
                recordedAudio.autoplay=true;
                var data = new FormData()
                data.append('file', blob, 'file')
                sendData(data)
              }
            }
          }
        function sendData(data) {
            fetch('http://127.0.0.1:5000/test',{
                method: 'POST',
                body: data
            })
        }

还有我的python代码：

 if request.method == "POST":
        files = request.files
        file = files.get('file')
        print(file.content)
    return render_template('test.html')

这是痕迹：

  File "C:\Users\Rohan\anaconda3\lib\site-packages\flask\app.py", line 2447, in wsgi_app
    response = self.full_dispatch_request()
  File "C:\Users\Rohan\anaconda3\lib\site-packages\flask\app.py", line 1952, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "C:\Users\Rohan\anaconda3\lib\site-packages\flask\app.py", line 1821, in handle_user_exception
    reraise(exc_type, exc_value, tb)
0, in full_dispatch_request
    rv = self.dispatch_request()
  File "C:\Users\Rohan\anaconda3\lib\site-packages\flask\app.py", line 1936, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "main.py", line 24, in test2
    print(file.content)
  File "C:\Users\Rohan\anaconda3\lib\site-packages\werkzeug\datastructures.py", line 3095, in __getattr__
    return getattr(self.stream._file, name)
AttributeError: '_io.BytesIO' object has no attribute 'content'

Answer 1

我解决了我的问题，我所需要做的就是做file.read而不是file.content。

Answer 2

您似乎试图将文件流发送回客户端，但我不认为它是由烧瓶支持的。使用这些文档作为将来的参考。

https://flask.palletsprojects.com/en/2.2.x/

还有。为什么不是一个问题。尝试:文件被发送后不被读取。