尝试将音频文件上传到服务器时出现Android问题
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【中文标题】尝试将音频文件上传到服务器时出现Android问题【英文标题】：Android issue while trying to Upload audio file to server 【发布时间】：2014-01-23 08:42:37 【问题描述】：我正在尝试在录制完成后将音频文件上传到服务器。我已将 CurrentDate 和 Time 设置为音频文件名，如下面的代码所示。
private String getFilename()
String filepath = Environment.getExternalStorageDirectory().getPath();
File file = new File(filepath, AUDIO_RECORDER_FOLDER);
SimpleDateFormat sdfDate = new SimpleDateFormat("dd-MMM-yyyy hh-mm-ss");
String currentDateandTime = sdfDate.format(new Date());
if (!file.exists())
file.mkdirs();
return (file.getAbsolutePath() + "/" + currentDateandTime + file_exts[currentFormat]);
所以现在文件将作为 23-Jan-2014 12-34-55.mp4 存储在 sdcard 中。
private void startRecording()
recorder = new MediaRecorder();
recorder.setAudiosource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(output_formats[currentFormat]);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(getFilename());
recorder.setOnErrorListener(errorListener);
recorder.setOnInfoListener(infoListener);
try
recorder.prepare();
recorder.start();
catch (IllegalStateException e)
e.printStackTrace();
catch (IOException e)
e.printStackTrace();
private void stopRecording()
if (null != recorder)
recorder.stop();
recorder.reset();
recorder.release();
recorder = null;
doAudioFileUpload(getFilename());
private void doAudioFileUpload(String path)
HttpURLConnection conn = null;
DataOutputStream dos = null;
DataInputStream inStream = null;
String existingFileName = path;
System.out.println("Inside of doupload nd path is === " + path);
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024 * 1024;
String urlString = "http://server-link/folder-name/upload_audio.php";
try
// ------------------ CLIENT REQUEST
FileInputStream fileInputStream = new FileInputStream(new File(
existingFileName));
// open a URL connection to the Servlet
URL url = new URL(urlString);
// Open a HTTP connection to the URL
conn = (HttpURLConnection) url.openConnection();
// Allow Inputs
conn.setDoInput(true);
// Allow Outputs
conn.setDoOutput(true);
// Don't use a cached copy.
conn.setUseCaches(false);
// Use a post method.
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Content-Type",
"multipart/form-data;boundary=" + boundary);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\""
+ existingFileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// read file and write it into form...
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0)
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// close streams
Log.e("Debug", "File is written");
fileInputStream.close();
dos.flush();
dos.close();
catch (MalformedURLException ex)
Log.e("Debug", "error: " + ex.getMessage(), ex);
catch (IOException ioe)
Log.e("Debug", "error: " + ioe.getMessage(), ioe);
// ------------------ read the SERVER RESPONSE
try
inStream = new DataInputStream(conn.getInputStream());
String str;
while ((str = inStream.readLine()) != null)
Log.e("Debug", "Server Response " + str);
inStream.close();
catch (IOException ioex)
Log.e("Debug", "error: " + ioex.getMessage(), ioex);
现在我已经使用下面的行将我的录音存储在 SD 卡中
recorder.setOutputFile(getFilename());
及以下用于将音频文件上传到服务器的行。
doAudioFileUpload(getFilename());
所以它使用相同的 getFilename() 来实现这两个目的。现在问题出现在这里，当第一次recorder.setOutputFile(getFilename()); 调用它时，它将文件名存储在 sd 卡中为23-Jan-2014 12-34-55.mp4，并且在录制 20 秒后，当这条线调用将音频上传到服务器时，它应该上传 23-Jan-2014 12-34-15.mp4 这个文件，但是其中它正在搜索23-Jan-2014 12-34-55.mp4 文件并给我找不到文件的错误。
所以基本上在录制开始后，当我调用 doAudioFileUpload(getFilename()); 时，它开始搜索 currentDateandTime 文件而不是我录制的文件。
我尝试使用一些动态名称上传文件，它工作正常，但是当我尝试对这个日期和时间做同样的事情时，它给出了错误。
请帮我解决这个问题。任何帮助，将不胜感激。提前谢谢...
编辑我的Logcat在下面
01-23 14:12:54.716: I/System.out(9279): Inside of doupload nd path is === /mnt/sdcard/AudioRecorder/23-Jan-2014 02-12-54.mp4
01-23 14:12:54.765: E/Debug(9279): error: /mnt/sdcard/AudioRecorder/23-Jan-2014 02-12-54.mp4: open failed: ENOENT (No such file or directory)
01-23 14:12:54.765: E/Debug(9279): java.io.FileNotFoundException: /mnt/sdcard/AudioRecorder/23-Jan-2014 02-12-54.mp4: open failed: ENOENT (No such file or directory)
01-23 14:12:54.765: E/Debug(9279): at libcore.io.IoBridge.open(IoBridge.java:448)
01-23 14:12:54.765: E/Debug(9279): at java.io.FileInputStream.<init>(FileInputStream.java:78)
01-23 14:12:54.765: E/Debug(9279): at iqualtech.skirr.Record_AudioPG.doAudioFileUpload(Record_AudioPG.java:293)
01-23 14:12:54.765: E/Debug(9279): at iqualtech.skirr.Record_AudioPG.stopRecording(Record_AudioPG.java:271)
01-23 14:12:54.765: E/Debug(9279): at iqualtech.skirr.Record_AudioPG.access$0(Record_AudioPG.java:265)
01-23 14:12:54.765: E/Debug(9279): at iqualtech.skirr.Record_AudioPG$4.onClick(Record_AudioPG.java:124)
01-23 14:12:54.765: E/Debug(9279): at android.view.View.performClick(View.java:3517)
01-23 14:12:54.765: E/Debug(9279): at android.view.View$PerformClick.run(View.java:14155)
01-23 14:12:54.765: E/Debug(9279): at android.os.Handler.handleCallback(Handler.java:605)
01-23 14:12:54.765: E/Debug(9279): at android.os.Handler.dispatchMessage(Handler.java:92)
01-23 14:12:54.765: E/Debug(9279): at android.os.Looper.loop(Looper.java:154)
01-23 14:12:54.765: E/Debug(9279): at android.app.ActivityThread.main(ActivityThread.java:4624)
01-23 14:12:54.765: E/Debug(9279): at java.lang.reflect.Method.invokeNative(Native Method)
01-23 14:12:54.765: E/Debug(9279): at java.lang.reflect.Method.invoke(Method.java:511)
01-23 14:12:54.765: E/Debug(9279): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809)
01-23 14:12:54.765: E/Debug(9279): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)
01-23 14:12:54.765: E/Debug(9279): at dalvik.system.NativeStart.main(Native Method)
01-23 14:12:54.765: E/Debug(9279): Caused by: libcore.io.ErrnoException: open failed: ENOENT (No such file or directory)
01-23 14:12:54.765: E/Debug(9279): at libcore.io.Posix.open(Native Method)
01-23 14:12:54.765: E/Debug(9279): at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
01-23 14:12:54.765: E/Debug(9279): at libcore.io.IoBridge.open(IoBridge.java:432)
01-23 14:12:54.765: E/Debug(9279): ... 16 more
01-23 14:12:54.766: D/AndroidRuntime(9279): Shutting down VM
01-23 14:12:54.766: W/dalvikvm(9279): threadid=1: thread exiting with uncaught exception (group=0x40e14258)
01-23 14:12:54.771: E/AndroidRuntime(9279): FATAL EXCEPTION: main
01-23 14:12:54.771: E/AndroidRuntime(9279): java.lang.NullPointerException
01-23 14:12:54.771: E/AndroidRuntime(9279): at iqualtech.skirr.Record_AudioPG.doAudioFileUpload(Record_AudioPG.java:342)
01-23 14:12:54.771: E/AndroidRuntime(9279): at iqualtech.skirr.Record_AudioPG.stopRecording(Record_AudioPG.java:271)
01-23 14:12:54.771: E/AndroidRuntime(9279): at iqualtech.skirr.Record_AudioPG.access$0(Record_AudioPG.java:265)
01-23 14:12:54.771: E/AndroidRuntime(9279): at iqualtech.skirr.Record_AudioPG$4.onClick(Record_AudioPG.java:124)
01-23 14:12:54.771: E/AndroidRuntime(9279): at android.view.View.performClick(View.java:3517)
01-23 14:12:54.771: E/AndroidRuntime(9279): at android.view.View$PerformClick.run(View.java:14155)
01-23 14:12:54.771: E/AndroidRuntime(9279): at android.os.Handler.handleCallback(Handler.java:605)
01-23 14:12:54.771: E/AndroidRuntime(9279): at android.os.Handler.dispatchMessage(Handler.java:92)
01-23 14:12:54.771: E/AndroidRuntime(9279): at android.os.Looper.loop(Looper.java:154)
01-23 14:12:54.771: E/AndroidRuntime(9279): at android.app.ActivityThread.main(ActivityThread.java:4624)
01-23 14:12:54.771: E/AndroidRuntime(9279): at java.lang.reflect.Method.invokeNative(Native Method)
01-23 14:12:54.771: E/AndroidRuntime(9279): at java.lang.reflect.Method.invoke(Method.java:511)
01-23 14:12:54.771: E/AndroidRuntime(9279): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809)
01-23 14:12:54.771: E/AndroidRuntime(9279): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)
01-23 14:12:54.771: E/AndroidRuntime(9279): at dalvik.system.NativeStart.main(Native Method)
【问题讨论】：
【参考方案1】：这是你需要做的，就像你调用getFileName()的方法一样，它实际上通过添加当前时间和日期来实现文件名，所以第一次调用时，它会给你说01-01-2014 12-12-20.mp4在 20 秒录制后，当您尝试通过 doUploadFile(getFileName()) 上传文件时，它会再次调用该方法并返回一个 renewed 文件名，该文件名将在 20 秒后为 01-01-2014 12-12-40.mp4 。所以这是你调用相同方法两次的问题，只需使用一次，这是你的最终代码。
String myFileName = "";
@Override onCreate()
//Your recording process
//Your uploading process
private void startRecording()
myFileName = getFilename();
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(output_formats[currentFormat]);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(myFileName);
recorder.setOnErrorListener(errorListener);
recorder.setOnInfoListener(infoListener);
try
recorder.prepare();
recorder.start();
catch (IllegalStateException e)
e.printStackTrace();
catch (IOException e)
e.printStackTrace();
private void stopRecording()
if (null != recorder)
recorder.stop();
recorder.reset();
recorder.release();
recorder = null;
doAudioFileUpload(myFileName);
【讨论】：
这段代码工作正常，但它正在覆盖文件意味着它一次又一次地只创建一个文件。 对于每条记录，您需要一个简单的新名称，请检查编辑以获取答案。您只需在录制开始时调用 getFileName() 而不是 onCreate() :) 很高兴我能帮上忙 :) 如果可以的话，我会给你 100 个。说真的，你已经给了很多时间来回答这个问题。真的很感谢你。再次感谢。 这就是我们在这里的原因【参考方案2】：我认为您正在尝试记录，保存到 sccard 然后上传到服务器，对吧？
那么，为什么不尝试改用FileObserver 呢？使用FileObserver，您可以监听目录中的任何文件操作，获取最后添加的文件（及其元数据），然后使用服务上传。
// set up a file observer to watch this directory on sd card
observer = new FileObserver(pathToWatch)
@Override
public void onEvent(int event, String file)
if(event == FileObserver.CREATE && !file.endWith(".mp4"))
Log.d(TAG, "File created [" + pathToWatch + file + "]");
Toast.makeText(getBaseContext(), file + " was saved!",Toast.LENGTH_LONG).show();
// upLoadFileToServer();
;
observer.startWatching(); //START OBSERVING
【讨论】：
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