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내 안드로이드 에뮬레이터 디렉토리 ('data \ data \ org.mypackage \ file.dat')에서 원격 서버로 파일을 업로드해야하지만 파일에 액세스하려고하면 '오류 : 권한이 거부되었습니다'와 같은 오류가 발생했습니다. sqlite 데이터베이스가 'asset \ data \ org.mypackage \ databases \'폴더에 저장됩니다. 응용 프로그램 시작시 해당 자산 폴더에 sqlite db가없는 경우 그 디렉토리와 거기에서 완벽하게 작동하지만 거기에 액세스 할 수 있습니다. 다음은 내 uploadFile 메서드입니다.Android 에뮬레이터 파일 읽기 권한
private void uploadFile(){
HttpURLConnection conn = null;
DataOutputStream dos = null;
DataInputStream inStream = null;
String existingFileName="/data/data/org.mypackage/file.dat";
GeneralFunctions.comment(existingFileName);
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1*1024*1024;
String responseFromServer = "";
String urlString = "http://117.231.150.213:8080/upload.jsp";
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
GF.showToast("File is written");
fileInputStream.close();
dos.flush();
dos.close();
}
catch (Exception ex)
{
GeneralFunctions.exception("error: " + ex.getMessage());
}
//------------------ read the SERVER RESPONSE
try {
inStream = new DataInputStream (conn.getInputStream());
String str;
while ((str = inStream.readLine()) != null)
{
GeneralFunctions.comment("Server Response "+str);
}
inStream.close();
}
catch (Exception ioex){
GeneralFunctions.exception("error: " + ioex.getMessage());
}
}