从Android上载文件时烧瓶轻松HTTP 500

问题描述 投票：1回答：1

我已经建立了一个小型机器学习项目，该项目根据项目的流派对音乐进行分类，并且我正在通过REST API（在Heroku上托管的flask-restful）提供功能提取功能。该函数接收音频文件并返回提取的功能，例如MFCC。我已经使用cURL（POST）测试了本地服务器和Heroku上的一台服务器，并且工作正常，但是当我从Android设备发出相同的POST请求时，它返回HTTP500。现在，我尝试了两个不同的库发出POST请求。燃料HTTP和从循环j。

它们都产生相同的结果，日志说通过POST上传的音频文件的类型为None（至少这是librosa.load（）函数声明的类型），这是不可能的。我不明白自己在做什么错，可能根本上是错。我对网络库和整个概念还很陌生。非常感谢您的帮助。我愿意接受任何建议或替代方法！

我在下面附上了所有必要的日志和代码段，请看一看。谢谢！

Flask服务的代码段：

from flask import Flask, jsonify, request
from flask_restful import Resource, Api, reqparse
import werkzeug
import scipy.optimize
import os,pickle
import numpy as np
from sklearn.preprocessing import StandardScaler
import librosa

app = Flask(__name__) 
api = Api(app) 

class receiveWav(Resource): 
    def post(self):
        parse = reqparse.RequestParser()
        parse.add_argument('file', type=werkzeug.datastructures.FileStorage, location='files')
        args = parse.parse_args()
        audioFile = args['file']
        scaler = pickle.load(open("scaler.ok","rb"))
        x , sr = librosa.load(audioFile,mono=True,duration=5)
        y=x
        #Extract the features
        chroma_stft = librosa.feature.chroma_stft(y=y, sr=sr)
        spec_cent = librosa.feature.spectral_centroid(y=y, sr=sr)
        spec_bw = librosa.feature.spectral_bandwidth(y=y, sr=sr)
        rolloff = librosa.feature.spectral_rolloff(y=y, sr=sr)
        zcr = librosa.feature.zero_crossing_rate(y)
        rmse = librosa.feature.rms(y=y)
        mfcc = librosa.feature.mfcc(y=y, sr=sr)
        features = f'{np.mean(chroma_stft)} {np.mean(rmse)} {np.mean(spec_cent)} {np.mean(spec_bw)} {np.mean(rolloff)} {np.mean(zcr)}'    
        for e in mfcc:
            features += f' {np.mean(e)}'
        input_data2 = np.array([float(i) for i in features.split(" ")]).reshape(1,-1)
        input_data2 = scaler.transform(input_data2)
        return jsonify(input_data2.tolist())
    def get(self):
        return ("Try POST!")


api.add_resource(receiveWav, '/receiveWav/sav') 


# driver function 
if __name__ == '__main__': 

    app.run(debug = True)

可以正常使用的cURL命令：

IN：

 curl -X POST -F '[email protected]' https://audient.herokuapp.com/receiveWav/sav

OUT：

[[-0.5121340988129909,-0.019333716494365955,-0.5550177910353545,-0.4930899684337351,-0.48935258100758594,-0.4062782248006835,0.3213519031236203,0.7112413195038644,-0.5840644603304033,0.2721270179974677,-0.4193148299872463,0.3797072443498176,-0.9736845762509901,0.6999042763966654,-0.5770378663005774,0.49129379959372144,-0.36939016178222783,0.5953006858517871,-0.07876657112131476,0.8944914190287592,-0.7771445271993948,-0.6157818858980287,0.05354594954508769,0.04207617031311767,-0.08474674018805041,0.7518709362787497]]

Herou日志（cURL）：

2020-03-09T12:42:33.177419+00:00 heroku[router]: at=info method=POST path="/receiveWav/sav" host=audient.herokuapp.com request_id=80bc4fa5-8d7b-419a-942b-f5c1c658f972 fwd="183.82.146.189" dyno=web.1 connect=1ms service=5615ms status=200 bytes=675 protocol=https
2020-03-09T12:42:33.175908+00:00 app[web.1]: 10.71.199.143 - - [09/Mar/2020:12:42:33 +0000] "POST /receiveWav/sav HTTP/1.1" 200 522 "-" "curl/7.55.1"

来自Android的POST请求（使用Fuel HTTP）：

Fuel.upload("http://d6ea6102.ngrok.io/receiveWav/sav")
                .add(FileDataPart(File(output!!),filename = "iam.wav"))
                .also { println(it) }
                .response { result ->
                    Log.d("HUSKY", "${result.get()}")
                }

来自Android的POST请求（使用loopj HTTP）：

val client = AsyncHttpClient()
            val params = RequestParams()
            params.put("iam.wav", File(output!!))
            client.post("https://audient.herokuapp.com/receiveWav/sav", params,object : AsyncHttpResponseHandler() {
                override fun onStart() {
                    // called before request is started
                }

                override fun onSuccess(
                    statusCode: Int,
                    headers: Array<Header?>?,
                    response: ByteArray?
                ) {
                    println("HTTP STATUS 200 OK")
                }

                override fun onFailure(
                    statusCode: Int,
                    headers: Array<Header?>?,
                    errorResponse: ByteArray?,
                    e: Throwable?
                ) {
                    // called when response HTTP status is "4XX" (eg. 401, 403, 404)
                    println("HTTP STATUS 400/500 NOT OK")
                }

                override fun onRetry(retryNo: Int) {
                    // called when request is retried
                }
            })

Heroku Log（Android（来自Fuel HTTP和loopj）：]

2020-03-09T12:44:33.130446+00:00 app[web.1]: [2020-03-09 12:44:33,129] ERROR in app: Exception on /receiveWav/sav [POST]
2020-03-09T12:44:33.130463+00:00 app[web.1]: Traceback (most recent call last):
2020-03-09T12:44:33.130464+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask/app.py", line 1949, in full_dispatch_request
2020-03-09T12:44:33.130464+00:00 app[web.1]: rv = self.dispatch_request()
2020-03-09T12:44:33.130465+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask/app.py", line 1935, in dispatch_request
2020-03-09T12:44:33.130466+00:00 app[web.1]: return self.view_functions[rule.endpoint](**req.view_args)
2020-03-09T12:44:33.130466+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask_restful/__init__.py", line 468, in wrapper
2020-03-09T12:44:33.130466+00:00 app[web.1]: resp = resource(*args, **kwargs)
2020-03-09T12:44:33.130467+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask/views.py", line 89, in view
2020-03-09T12:44:33.130468+00:00 app[web.1]: return self.dispatch_request(*args, **kwargs)
2020-03-09T12:44:33.130469+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask_restful/__init__.py", line 583, in dispatch_request
2020-03-09T12:44:33.130469+00:00 app[web.1]: resp = meth(*args, **kwargs)
2020-03-09T12:44:33.130469+00:00 app[web.1]: File "/app/app.py", line 20, in post
2020-03-09T12:44:33.130470+00:00 app[web.1]: x , sr = librosa.load(audioFile,mono=True,duration=5)
2020-03-09T12:44:33.130471+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/librosa/core/audio.py", line 129, in load
2020-03-09T12:44:33.130471+00:00 app[web.1]: with sf.SoundFile(path) as sf_desc:
2020-03-09T12:44:33.130471+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/soundfile.py", line 629, in __init__
2020-03-09T12:44:33.130472+00:00 app[web.1]: self._file = self._open(file, mode_int, closefd)
2020-03-09T12:44:33.130472+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/soundfile.py", line 1182, in _open
2020-03-09T12:44:33.130472+00:00 app[web.1]: raise TypeError("Invalid file: {0!r}".format(self.name))
2020-03-09T12:44:33.130481+00:00 app[web.1]: TypeError: Invalid file: None
2020-03-09T12:44:33.132158+00:00 app[web.1]: 10.33.187.161 - - [09/Mar/2020:12:44:33 +0000] "POST /receiveWav/sav HTTP/1.1" 500 37 "-" "-"
2020-03-09T12:44:33.227673+00:00 app[web.1]: /app/.heroku/python/lib/python3.6/site-packages/sklearn/base.py:318: UserWarning: Trying to unpickle estimator StandardScaler from version 0.21.3 when using version 0.22.2.post1. This might lead to breaking code or invalid results. Use at your own risk.
2020-03-09T12:44:33.227682+00:00 app[web.1]: UserWarning)
2020-03-09T12:44:33.229363+00:00 app[web.1]: [2020-03-09 12:44:33,228] ERROR in app: Exception on /receiveWav/sav [POST]
2020-03-09T12:44:33.229365+00:00 app[web.1]: Traceback (most recent call last):
2020-03-09T12:44:33.229365+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask/app.py", line 1949, in full_dispatch_request
2020-03-09T12:44:33.229366+00:00 app[web.1]: rv = self.dispatch_request()
2020-03-09T12:44:33.229366+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask/app.py", line 1935, in dispatch_request
2020-03-09T12:44:33.229367+00:00 app[web.1]: return self.view_functions[rule.endpoint](**req.view_args)
2020-03-09T12:44:33.229367+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask_restful/__init__.py", line 468, in wrapper
2020-03-09T12:44:33.229368+00:00 app[web.1]: resp = resource(*args, **kwargs)
2020-03-09T12:44:33.229368+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask/views.py", line 89, in view
2020-03-09T12:44:33.229369+00:00 app[web.1]: return self.dispatch_request(*args, **kwargs)
2020-03-09T12:44:33.229369+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask_restful/__init__.py", line 583, in dispatch_request
2020-03-09T12:44:33.229370+00:00 app[web.1]: resp = meth(*args, **kwargs)
2020-03-09T12:44:33.229370+00:00 app[web.1]: File "/app/app.py", line 20, in post
2020-03-09T12:44:33.229370+00:00 app[web.1]: x , sr = librosa.load(audioFile,mono=True,duration=5)
2020-03-09T12:44:33.229371+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/librosa/core/audio.py", line 129, in load
2020-03-09T12:44:33.229371+00:00 app[web.1]: with sf.SoundFile(path) as sf_desc:
2020-03-09T12:44:33.229372+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/soundfile.py", line 629, in __init__
2020-03-09T12:44:33.229372+00:00 app[web.1]: self._file = self._open(file, mode_int, closefd)
2020-03-09T12:44:33.229373+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/soundfile.py", line 1182, in _open
2020-03-09T12:44:33.229373+00:00 app[web.1]: raise TypeError("Invalid file: {0!r}".format(self.name))
2020-03-09T12:44:33.229468+00:00 app[web.1]: TypeError: Invalid file: None
2020-03-09T12:44:33.231741+00:00 app[web.1]: 10.31.120.51 - - [09/Mar/2020:12:44:33 +0000] "POST /receiveWav/sav HTTP/1.1" 500 37 "-" "Dalvik/2.1.0 (Linux; U; Android 10; Redmi K20 Pro MIUI/V11.0.3.0.QFKINXM)"
2020-03-09T12:44:33.133234+00:00 heroku[router]: at=info method=POST path="/receiveWav/sav" host=audient.herokuapp.com request_id=b9271923-4c37-412c-bcd0-b8619ca96161 fwd="106.200.166.60" dyno=web.1 connect=1ms service=3462ms status=500 bytes=208 protocol=https
2020-03-09T12:44:33.233148+00:00 heroku[router]: at=info method=POST path="/receiveWav/sav" host=audient.herokuapp.com request_id=49d2f2bb-3226-4a69-922c-b1059f66aca5 fwd="106.200.166.60" dyno=web.1 connect=1ms service=3580ms status=500 bytes=208 protocol=https

更新1：

我也尝试过]

val job = GlobalScope.launch{
                val file = File(output)
                try {
                    val httpclient = DefaultHttpClient()
                    val httppost = HttpPost("https://audient.herokuapp.com/receiveWav/sav")

                    val reqEntity = InputStreamEntity(
                        FileInputStream(file), -1)
                    reqEntity.setContentType("binary/octet-stream")
                    reqEntity.isChunked = false
                    httppost.entity = reqEntity
                    var response = httpclient.execute(httppost)
                    Log.d("HUSKY","${response}")
                    println(response)

                } catch (e: Exception) {
                    println("${e}")
                }
            }

LOG：
2020-03-09T14:12:55.180267+00:00 app[web.1]: /app/.heroku/python/lib/python3.6/site-packages/sklearn/base.py:318: UserWarning: Trying to unpickle estimator StandardScaler from version 0.21.3 when using version 0.22.2.post1. This might lead to breaking code or invalid results. Use at your own risk.
2020-03-09T14:12:55.180278+00:00 app[web.1]: UserWarning)
2020-03-09T14:12:55.181780+00:00 app[web.1]: [2020-03-09 14:12:55,181] ERROR in app: Exception on /receiveWav/sav [POST]
2020-03-09T14:12:55.181781+00:00 app[web.1]: Traceback (most recent call last):
2020-03-09T14:12:55.181781+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask/app.py", line 1949, in full_dispatch_request
2020-03-09T14:12:55.181782+00:00 app[web.1]: rv = self.dispatch_request()
2020-03-09T14:12:55.181783+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask/app.py", line 1935, in dispatch_request
2020-03-09T14:12:55.181783+00:00 app[web.1]: return self.view_functions[rule.endpoint](**req.view_args)
2020-03-09T14:12:55.181783+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask_restful/__init__.py", line 468, in wrapper
2020-03-09T14:12:55.181784+00:00 app[web.1]: resp = resource(*args, **kwargs)
2020-03-09T14:12:55.181784+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask/views.py", line 89, in view
2020-03-09T14:12:55.181785+00:00 app[web.1]: return self.dispatch_request(*args, **kwargs)
2020-03-09T14:12:55.181785+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask_restful/__init__.py", line 583, in dispatch_request
2020-03-09T14:12:55.181786+00:00 app[web.1]: resp = meth(*args, **kwargs)
2020-03-09T14:12:55.181786+00:00 app[web.1]: File "/app/app.py", line 20, in post
2020-03-09T14:12:55.181787+00:00 app[web.1]: x , sr = librosa.load(audioFile,mono=True,duration=5)
2020-03-09T14:12:55.181787+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/librosa/core/audio.py", line 129, in load
2020-03-09T14:12:55.181788+00:00 app[web.1]: with sf.SoundFile(path) as sf_desc:
2020-03-09T14:12:55.181789+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/soundfile.py", line 629, in __init__
2020-03-09T14:12:55.181789+00:00 app[web.1]: self._file = self._open(file, mode_int, closefd)
2020-03-09T14:12:55.181789+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/soundfile.py", line 1182, in _open
2020-03-09T14:12:55.181790+00:00 app[web.1]: raise TypeError("Invalid file: {0!r}".format(self.name))
2020-03-09T14:12:55.188875+00:00 app[web.1]: TypeError: Invalid file: None
2020-03-09T14:12:55.196231+00:00 app[web.1]: 10.168.89.215 - - [09/Mar/2020:14:12:55 +0000] "POST /receiveWav/sav HTTP/1.1" 500 37 "-" "Apache-HttpClient/UNAVAILABLE (java 1.5)"
2020-03-09T14:12:55.524669+00:00 heroku[router]: sock=backend at=error code=H18 desc="Server Request Interrupted" method=POST path="/receiveWav/sav" host=audient.herokuapp.com request_id=c9e15867-f4b6-4ea4-b3c7-5107fb8493dd fwd="183.82.146.189" dyno=web.1 connect=0ms service=355ms status=503 bytes=208 protocol=https
2020-03-09T14:15:03.316967+00:00 app[web.1]: [2020-03-09 14:15:03,316] ERROR in app: Exception on /receiveWav/sav [POST]
2020-03-09T14:15:03.316977+00:00 app[web.1]: Traceback (most recent call last):
2020-03-09T14:15:03.316979+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask/app.py", line 1949, in full_dispatch_request
2020-03-09T14:15:03.316979+00:00 app[web.1]: rv = self.dispatch_request()
2020-03-09T14:15:03.316979+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask/app.py", line 1935, in dispatch_request
2020-03-09T14:15:03.316981+00:00 app[web.1]: return self.view_functions[rule.endpoint](**req.view_args)
2020-03-09T14:15:03.316981+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask_restful/__init__.py", line 468, in wrapper
2020-03-09T14:15:03.316981+00:00 app[web.1]: resp = resource(*args, **kwargs)
2020-03-09T14:15:03.316982+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask/views.py", line 89, in view
2020-03-09T14:15:03.316983+00:00 app[web.1]: return self.dispatch_request(*args, **kwargs)
2020-03-09T14:15:03.316983+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/flask_restful/__init__.py", line 583, in dispatch_request
2020-03-09T14:15:03.316984+00:00 app[web.1]: resp = meth(*args, **kwargs)
2020-03-09T14:15:03.316984+00:00 app[web.1]: File "/app/app.py", line 20, in post
2020-03-09T14:15:03.316985+00:00 app[web.1]: x , sr = librosa.load(audioFile,mono=True,duration=5)
2020-03-09T14:15:03.316985+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/librosa/core/audio.py", line 129, in load
2020-03-09T14:15:03.316986+00:00 app[web.1]: with sf.SoundFile(path) as sf_desc:
2020-03-09T14:15:03.316986+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/soundfile.py", line 629, in __init__
2020-03-09T14:15:03.316986+00:00 app[web.1]: self._file = self._open(file, mode_int, closefd)
2020-03-09T14:15:03.316987+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/soundfile.py", line 1182, in _open
2020-03-09T14:15:03.316987+00:00 app[web.1]: raise TypeError("Invalid file: {0!r}".format(self.name))
2020-03-09T14:15:03.316996+00:00 app[web.1]: TypeError: Invalid file: None
2020-03-09T14:15:03.317808+00:00 app[web.1]: 10.63.251.11 - - [09/Mar/2020:14:15:03 +0000] "POST /receiveWav/sav HTTP/1.1" 500 37 "-" "Apache-HttpClient/UNAVAILABLE (java 1.5)"
2020-03-09T14:15:03.529280+00:00 heroku[router]: sock=backend at=error code=H18 desc="Server Request Interrupted" method=POST path="/receiveWav/sav" host=audient.herokuapp.com request_id=82498799-a9d8-498a-83ee-b6d9c8519558 fwd="183.82.146.189" dyno=web.1 connect=0ms service=214ms status=503 bytes=208 protocol=https

我已经建立了一个小型机器学习项目，该项目根据项目的流派对音乐进行分类，并且我正在通过REST API（在Heroku上托管的flask-restful）提供功能提取功能。 ...

python android flask heroku flask-restful
1个回答
0
投票

[在两个库（Loopj和Fuel HTTP）中均未提及该字段名，因此Flask-restful在解析请求时未收到任何字段名为“ file”的内容。

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