java - 如何在android中将音频从sd卡上传到服务器

Question

我正在尝试将音频文件从 SD 卡的特定文件夹上传到服务器。但是当我尝试这样做时，我收到以下错误。

错误:/mnt/sdcard/AudioRecorder:打开失败:EISDIR(是一个目录)

我的完整日志如下。

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

下面还有一个 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)

我的代码

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

日志消息很清楚，您正在尝试上传目录，而不是文件:

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

/AudioRecorder/不是音频文件。您也许应该在末尾附加音频文件名。

如果您必须上传目录中的所有文件，请考虑在( Intent )服务中执行此操作。

1. 将文件名作为参数添加到您的方法中:

2. 在您的 Activity 中，循环进入文件列表，并为每个文件:

   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. 服务:

   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);
       }
   }   
   

   希望对你有帮助

PS:未经测试的代码。