[英]Uploading an audiofile to server using Android Studio
嗨,我正在努力將保存在手機上的音頻文件上傳到服務器,在下面的代碼中,我將DoOutput設置為true,但仍為false。 當我嘗試新的DataOutputStream時出現錯誤,為什么?
FATAL EXCEPTION: main
Process:com.example.dialectdata, PID: 2296
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null,request=2, result=-1, data=Intent { dat=content://com.android.providers.media.documents/document/audio:11464 flg=0x1 }} to activity{com.example.dialectdata/com.example.dialectdata.MainActivity}: android.os.NetworkOnMainThreadException
運行調試后,似乎以下代碼附帶了錯誤。 這里selectedPath是電話上的文件路徑,而urlString是php文件的地址。 該
private void doFileUpload(){
HttpURLConnection conn = null;
DataOutputStream dos = null;
DataInputStream inStream = null;
String lineEnd = "rn";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1*1024*1024;
String responseFromServer = "";
String urlString = "https://unintermitted-modul.000webhostapp.com/upload.php";
try
{
FileInputStream fileInputStream = new FileInputStream(new File(selectedPath) );
// 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="" + selectedPath + """ + 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();
}
這是我在服務器端的PHP代碼。
<?php
$target_path= "uploads/";
$target_path= $target_path. basename($_FILES['uploadedfile']['name']);
if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'],$target_path))
{
echo"The file ". basename($_FILES['uploadedfile']['name']).
" has been uploaded";
}else{
echo"There was an error uploading the file, please try again!";
echo"filename: " . basename($_FILES['uploadedfile']['name']);
echo"target_path: " .$target_path;
}
?>
提前非常感謝您。
doFileUpload()在這里執行:
public void openGalleryAudio(){
Intent intent = new Intent();
intent.setType("audio/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,"Select Audio "), SELECT_AUDIO);
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_AUDIO)
{
System.out.println("SELECT_AUDIO");
Uri selectedImageUri = data.getData();
selectedPath = getPath(selectedImageUri);
System.out.println("SELECT_AUDIO Path : " + selectedPath);
doFileUpload();
}
}
}
單擊按鈕時執行openGalleryAudio()
嘗試在AsyncTask中做到這一點:
new AsyncTask<Void, Void, Void>()
{
@Override
protected Void doInBackground(Void... params)
{
doFileUpload();
return null;
}
}.execute();
嘗試異步:
private class FileUploadTask extends AsyncTask<Void, Void, Void> {
@Override
protected String doInBackground(String... urls) {
// File upload starts here
doFileUpload();
return null;
}
@Override
protected void onPostExecute(String result) {
// Do whatever you wanna do after file upload finish
}
}
從您的“活動”,“片段”,“服務”中調用異步,如下所示:-
FileUploadTask fileUploadTask = new FileUploadTask();
fileUploadTask.execute();
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