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
我想在Android上做同样的事情。到目前为止，我已经实现了一个带有URLConnection的AsyncTask，我发送了标题和除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;
}
答案 0 :(得分：2)
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URLConnection always returns 400 : Bad Request when I try to upload a .wav file我试图在不同的服务器上完成同样的任务，并且证明比我在这个答案中要分享的更复杂，但如果你仍然不能看看它使事情有效。 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, Void, String> {
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);
}
}
答案 1 :(得分：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);
}