如何在Android中將音頻從SD卡上傳到服務器

Question

我正在嘗試將音頻文件從SD卡的特定文件夾上傳到服務器。 但是當我嘗試這樣做時，我會得到以下錯誤。

error: /mnt/sdcard/AudioRecorder: open failed: EISDIR (Is a directory)

我的完整logcat如下。

01-23 12:44:18.920: E/Debug(6164): error: /mnt/sdcard/AudioRecorder: open failed: EISDIR (Is a directory)
01-23 12:44:18.920: E/Debug(6164): java.io.FileNotFoundException: /mnt/sdcard/AudioRecorder: open failed: EISDIR (Is a directory)
01-23 12:44:18.920: E/Debug(6164):  at libcore.io.IoBridge.open(IoBridge.java:448)
01-23 12:44:18.920: E/Debug(6164):  at java.io.FileInputStream.<init>(FileInputStream.java:78)
01-23 12:44:18.920: E/Debug(6164):  at iqualtech.skirr.Record_AudioPG.doAudioFileUpload(Record_AudioPG.java:295)
01-23 12:44:18.920: E/Debug(6164):  at iqualtech.skirr.Record_AudioPG.stopRecording(Record_AudioPG.java:271)
01-23 12:44:18.920: E/Debug(6164):  at iqualtech.skirr.Record_AudioPG.access$0(Record_AudioPG.java:265)
01-23 12:44:18.920: E/Debug(6164):  at iqualtech.skirr.Record_AudioPG$4.onClick(Record_AudioPG.java:124)
01-23 12:44:18.920: E/Debug(6164):  at android.view.View.performClick(View.java:3517)
01-23 12:44:18.920: E/Debug(6164):  at android.view.View$PerformClick.run(View.java:14155)
01-23 12:44:18.920: E/Debug(6164):  at android.os.Handler.handleCallback(Handler.java:605)
01-23 12:44:18.920: E/Debug(6164):  at android.os.Handler.dispatchMessage(Handler.java:92)
01-23 12:44:18.920: E/Debug(6164):  at android.os.Looper.loop(Looper.java:154)
01-23 12:44:18.920: E/Debug(6164):  at android.app.ActivityThread.main(ActivityThread.java:4624)
01-23 12:44:18.920: E/Debug(6164):  at java.lang.reflect.Method.invokeNative(Native Method)
01-23 12:44:18.920: E/Debug(6164):  at java.lang.reflect.Method.invoke(Method.java:511)
01-23 12:44:18.920: E/Debug(6164):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809)
01-23 12:44:18.920: E/Debug(6164):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)
01-23 12:44:18.920: E/Debug(6164):  at dalvik.system.NativeStart.main(Native Method)
01-23 12:44:18.920: E/Debug(6164): Caused by: libcore.io.ErrnoException: open failed: EISDIR (Is a directory)
01-23 12:44:18.920: E/Debug(6164):  at libcore.io.IoBridge.open(IoBridge.java:437)
01-23 12:44:18.920: E/Debug(6164):  ... 16 more

還有一個logcat

01-23 12:44:18.926: E/AndroidRuntime(6164): FATAL EXCEPTION: main
01-23 12:44:18.926: E/AndroidRuntime(6164): java.lang.NullPointerException
01-23 12:44:18.926: E/AndroidRuntime(6164):     at iqualtech.skirr.Record_AudioPG.doAudioFileUpload(Record_AudioPG.java:344)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at iqualtech.skirr.Record_AudioPG.stopRecording(Record_AudioPG.java:271)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at iqualtech.skirr.Record_AudioPG.access$0(Record_AudioPG.java:265)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at iqualtech.skirr.Record_AudioPG$4.onClick(Record_AudioPG.java:124)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at android.view.View.performClick(View.java:3517)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at android.view.View$PerformClick.run(View.java:14155)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at android.os.Handler.handleCallback(Handler.java:605)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at android.os.Handler.dispatchMessage(Handler.java:92)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at android.os.Looper.loop(Looper.java:154)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at android.app.ActivityThread.main(ActivityThread.java:4624)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at java.lang.reflect.Method.invokeNative(Native Method)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at java.lang.reflect.Method.invoke(Method.java:511)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)
01-23 12:44:18.926: E/AndroidRuntime(6164):     at dalvik.system.NativeStart.main(Native Method)

我的守則

private void doAudioFileUpload() {
        HttpURLConnection conn = null;
        DataOutputStream dos = null;
        DataInputStream inStream = null;
        String existingFileName = Environment.getExternalStorageDirectory()
                .getPath() + "/AudioRecorder/";

        System.out.println("Inside of doupload nd path is === "
                + existingFileName);

        String lineEnd = "\r\n";
        String twoHyphens = "--";
        String boundary = "*****";
        int bytesRead, bytesAvailable, bufferSize;
        byte[] buffer;
        int maxBufferSize = 1 * 1024 * 1024 * 1024;
        String urlString = "http://link to server/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);
        }
    }    

Answer 1

日志消息很明確，您正在嘗試上傳目錄，而不是文件：

String existingFileName = Environment.getExternalStorageDirectory()
                .getPath() + "/AudioRecorder/"

/ AudioRecorder /不是音頻文件。您最后可能會附加音頻文件名。

如果你必須上傳目錄中的所有文件，那么考慮在（Intent）服務中執行此操作。

1. 將文件名作為參數添加到方法中：

2. 在您的活動中，循環進入文件列表，並為每個文件：

    for(String filename : filesList ){ Intent intent = new Intent(this, UploadIntentService.class); Bundle params = new Bundle(); params.putString(UploadIntentService.KEY_FILE_NAME, filename); activity.startService(intent); } 

3. 服務 ：

    public class UploadIntentService extends IntentService { public static final String KEY_FILE_NAME= "filename"; public UploadIntentService() { super("UploadIntentService"); } @Override protected void onHandleIntent(Intent intent) { String filename = intent.getBundle().getStringExtra(UploadIntentService.KEY_FILE_NAME); doAudioFileUpload(filename); } private void doAudioFileUpload(String filename) { HttpURLConnection conn = null; DataOutputStream dos = null; DataInputStream inStream = null; String existingFileName = Environment.getExternalStorageDirectory() .getPath() + "/AudioRecorder/"+filename; System.out.println("Inside of doupload nd path is === " + existingFileName); String lineEnd = "\\r\\n"; String twoHyphens = "--"; String boundary = "*****"; int bytesRead, bytesAvailable, bufferSize; byte[] buffer; int maxBufferSize = 1 * 1024 * 1024 * 1024; String urlString = "http://link to server/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); } } 

   希望能幫助到你

PS：沒有經過測試的代碼。