如何使用URLConnection上传WAV文件

Curretly，我可以在终端（MAC）中使用此命令上传.wav文件：

curl -H 'X-Arg: AccessKey=3f55abc5-2830-027ce-e328-4e74df5a3f8f' --data-binary @audio.wav -H 'Content-Type: audio/wav' http://generic-15327.2-3-11.com/bbb.aaa.eval/abc 

我想从Android做同样的事情。 到目前为止，我已经实现了一个带有URLConnection的AsyncTask，我发送标题和除wave文件之外的所有内容。 得到一个json响应，告诉没有文件被上传，显然，但到目前为止，我知道我正确实现了标头和连接。 现在，我想上传.wav文件来包装所有内容，但我在这里有点迷失。 如何使用URLConnection上传Android中的.wav文件？ 下面是我的代码，它是在AsyncTask里面，我不会把它放在一边简短：

  URL obj = new URL(BASE_URL); HttpURLConnection conn = (HttpURLConnection) obj.openConnection(); conn.setRequestProperty("X-Arg", "AccessKey=3fcb4985-2830-07ce-e998-4e74df5a3f8f"); conn.setRequestProperty("Content-Type", "audio/wav"); conn.setRequestMethod("POST"); conn.setDoInput(true); conn.setDoOutput(true); String wavpath=Environment.getExternalStorageDirectory().getAbsolutePath()+"/audio.wav"; File wavfile = new File(wavpath); boolean success = true; if (wavfile.exists()) { app.loge("**** audio.wav DETECTED"); } else{ app.loge("**** audio.wav MISSING"); } conn.connect(); //CODE TO UPLOAD THE FILE SHOULD GO HERE!! int responseCode = conn.getResponseCode(); app.logy("POST Response Code : " + responseCode); //Fetch response JSON if (responseCode == HttpURLConnection.HTTP_OK) { //success BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream())); String inputLine; StringBuffer response = new StringBuffer(); while ((inputLine = in.readLine()) != null) { response.append(inputLine); } in.close(); app.loge(response.toString()); result = 1; } else { app.loge("POST FAILED"); result = 0; } 

Answer 1

我终于找到了上传wav文件的方法。 某些服务器接受或拒绝上传请求的方式略有不同。 在另一个问题中， 当我尝试上传.wav文件时，URLConnection总是返回400：Bad Request我试图在不同的服务器上完成同样的任务，并且certificate比我在这个答案中要分享的那个更复杂，但如果你仍然无法让事情发挥作用，请看看它。 没有简单的方法直接将CURL请求“翻译”到java而不会弄乱NDK。 对于这个问题，这是适合我的代码：

 final String ASR_URL="http:..... "; public class curlAudioToWatson extends AsyncTask { String asrJsonString=""; @Override protected String doInBackground(String... params) { String result = ""; try { loge("**** UPLOADING .WAV to ASR..."); URL obj = new URL(ASR_URL); HttpURLConnection conn = (HttpURLConnection) obj.openConnection(); conn.setRequestProperty("X-Arg", "AccessKey=3fvfg985-2830-07ce-e998-4e74df"); conn.setRequestProperty("Content-Type", "audio/wav"); conn.setRequestMethod("POST"); conn.setDoInput(true); conn.setDoOutput(true); String wavpath=Environment.getExternalStorageDirectory().getAbsolutePath()+"/my AppFolder/"+StorageUtils.AUDIO_FILE_NAME+".wav"; //audio.wav"; File wavfile = new File(wavpath); boolean success = true; if (wavfile.exists()) { loge("**** audio.wav DETECTED: "+wavfile); } else{ loge("**** audio.wav MISSING: " +wavfile); } String charset="UTF-8"; String boundary = Long.toHexString(System.currentTimeMillis()); // Just generate some unique random value. String CRLF = "\r\n"; // Line separator required by multipart/form-data. OutputStream output=null; PrintWriter writer=null; try { output = conn.getOutputStream(); writer = new PrintWriter(new OutputStreamWriter(output, charset), true); byte [] music=new byte[(int) wavfile.length()];//size & length of the file InputStream is = new FileInputStream (wavfile); BufferedInputStream bis = new BufferedInputStream (is, 16000); DataInputStream dis = new DataInputStream (bis); // Create a DataInputStream to read the audio data from the saved file int i = 0; copyStream(dis,output); } catch(Exception e){ } conn.connect(); int responseCode = conn.getResponseCode(); logy("POST Response Code : " + responseCode + " , MSG: " + conn.getResponseMessage()); if (responseCode == HttpURLConnection.HTTP_OK) { //success BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream())); String inputLine; StringBuffer response = new StringBuffer(); while ((inputLine = in.readLine()) != null) { response.append(inputLine); } in.close(); loge("***ASR RESULT: " + response.toString()); JSONArray jresponse=new JSONObject(response.toString()).getJSONObject("Recognition").getJSONArray("NBest"); asrJsonString=jresponse.toString(); for(int i = 0 ; i < jresponse.length(); i++){ JSONObject jsoni=jresponse.getJSONObject(i); if(jsoni.has("ResultText")){ String asrResult=jsoni.getString("ResultText"); //ActionManager.getInstance().addDebugMessage("ASR Result: "+asrResult); loge("*** Result Text: "+asrResult); result = asrResult; } } loge("***ASR RESULT: " + jresponse.toString()); } else { BufferedReader in = new BufferedReader(new InputStreamReader(conn.getErrorStream())); String inputLine; StringBuffer response = new StringBuffer(); while ((inputLine = in.readLine()) != null) { response.append(inputLine); } in.close(); loge("POST FAILED: " + response.toString()); result = ""; } } catch (Exception e) { logy("HTTP Exception: " + e.getLocalizedMessage()); } return result; //"Failed to fetch data!"; } @Override protected void onPostExecute(String result) { if(!result.equals("")){ logy("onPostEXECUTE SUCCESS, consuming result"); sendTextInputFromUser(result); ActionManager.getInstance().addDebugMessage("***ASR RESULT: "+asrJsonString); runOnUiThread(new Runnable() { @Override public void run() { } }); }else{ logy("onPostEXECUTE FAILED"); } } } public void copyStream( InputStream is, OutputStream os) { final int buffer_size = 4096; try { byte[] bytes = new byte[buffer_size]; int k=-1; double prog=0; while ((k = is.read(bytes, 0, bytes.length)) > -1) { if(k != -1) { os.write(bytes, 0, k); prog=prog+k; double progress = ((long) prog)/1000;///size; loge("UPLOADING: "+progress+" kB"); } } os.flush(); is.close(); os.close(); } catch (Exception ex) { loge("File to Network Stream Copy error "+ex); } } 

Answer 2

这是为wit.ai写的更简单的代码我希望它有所帮助：

 String requestURL = "https://api.wit.ai/speech?v=20160526"; URL url = new URL(requestURL); HttpURLConnection httpConn = (HttpURLConnection) url.openConnection(); httpConn.setUseCaches(false); httpConn.setDoOutput(true); // indicates POST method httpConn.setDoInput(true); httpConn.setRequestMethod("POST"); httpConn.setRequestProperty("Connection", "Keep-Alive"); httpConn.setRequestProperty("Cache-Control", "no-cache"); httpConn.setRequestProperty("Authorization", "Bearer XXXXXXXXXXXXXXXXXXXXXX");; httpConn.setRequestProperty("Content-Type", "audio/wav");; File waveFile= new File("RecordAudio.wav"); byte[] bytes = Files.readAllBytes(waveFile.toPath()); DataOutputStream request = new DataOutputStream(httpConn.getOutputStream()); request.write(bytes); request.flush(); request.close(); String response = ""; // checks server's status code first int status = httpConn.getResponseCode(); if (status == HttpURLConnection.HTTP_OK) { InputStream responseStream = new BufferedInputStream(httpConn.getInputStream()); BufferedReader responseStreamReader = new BufferedReader(new InputStreamReader(responseStream)); String line = ""; StringBuilder stringBuilder = new StringBuilder(); while ((line = responseStreamReader.readLine()) != null) { stringBuilder.append(line).append("\n"); } responseStreamReader.close(); response = stringBuilder.toString(); httpConn.disconnect(); } else { throw new IOException("Server returned non-OK status: " + status); }