ビデオをサーバーにアップロードしようとしています。ここでは、ビデオをアセットフォルダーに保存し、アップロードしようとしています。次のコードを使用しました:
private void uploadVideo() {
String upLoadServerUri = "http://xxxxx/video_upload.php";
// String [] string = sourceFileUri;
String fileName = "file:///android_asset/clip0003";
HttpURLConnection conn = null;
DataOutputStream dos = null;
DataInputStream inStream = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
int serverResponseCode=1;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
String responseFromServer = "";
File sourceFile = new File(fileName);
if (!sourceFile.isFile()) {
Log.e("Huzza", "Source File Does not exist");
}
try { // open a URL connection to the Servlet
FileInputStream fileInputStream = new FileInputStream(new File(fileName));
URL url = new URL(upLoadServerUri);
conn = (HttpURLConnection) url.openConnection(); // Open a HTTP connection to the URL
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("video", fileName);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""+ fileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
bytesAvailable = fileInputStream.available(); // create a buffer of maximum size
Log.i("Huzza", "Initial .available : " + bytesAvailable);
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);
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage();
Log.i("Upload file to server", "HTTP Response is : " + serverResponseMessage + ": " + serverResponseCode);
// close streams
Log.i("Upload file to server", fileName + " File is written");
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
ex.printStackTrace();
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (Exception e) {
e.printStackTrace();
}
//this block will give the response of upload link
try {
BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line;
while ((line = rd.readLine()) != null) {
Log.i("Huzza", "RES Message: " + line);
}
rd.close();
} catch (IOException ioex) {
Log.e("Huzza", "error: " + ioex.getMessage(), ioex);
}
} // end upLoad2Server
しかし、以下のエラーでアップロードできません!! 誰でも私を助けることができます.Thanks !!!
エラー:
03-20 18:09:07.033: E/AndroidRuntime(1529): FATAL EXCEPTION: main
03-20 18:09:07.033: E/AndroidRuntime(1529): java.lang.NullPointerException
03-20 18:09:07.033: E/AndroidRuntime(1529): at com.example.galleryframe.videoupload.uploadVideo(videoupload.java:233)
03-20 18:09:07.033: E/AndroidRuntime(1529): at com.example.galleryframe.videoupload.access$0(videoupload.java:150)
03-20 18:09:07.033: E/AndroidRuntime(1529): at com.example.galleryframe.videoupload$3.onClick(videoupload.java:114)
03-20 18:09:07.033: E/AndroidRuntime(1529): at android.view.View.performClick(View.java:2485)
03-20 18:09:07.033: E/AndroidRuntime(1529): at android.view.View$PerformClick.run(View.java:9080)
03-20 18:09:07.033: E/AndroidRuntime(1529): at android.os.Handler.handleCallback(Handler.java:587)
03-20 18:09:07.033: E/AndroidRuntime(1529): at android.os.Handler.dispatchMessage(Handler.java:92)
03-20 18:09:07.033: E/AndroidRuntime(1529): at android.os.Looper.loop(Looper.java:123)
03-20 18:09:07.033: E/AndroidRuntime(1529): at android.app.ActivityThread.main(ActivityThread.java:3683)
03-20 18:09:07.033: E/AndroidRuntime(1529): at java.lang.reflect.Method.invokeNative(Native Method)
03-20 18:09:07.033: E/AndroidRuntime(1529): at java.lang.reflect.Method.invoke(Method.java:507)
03-20 18:09:07.033: E/AndroidRuntime(1529): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
03-20 18:09:07.033: E/AndroidRuntime(1529): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
03-20 18:09:07.033: E/AndroidRuntime(1529): at dalvik.system.NativeStart.main(Native Method)