上述与上传.db（任何扩展名）文件到服务器有关的问题的解决方案：
以下是上传文件的步骤：
1 :- new AsynUpload().execute();
2 :-
class AsynUpload extends AsyncTask<Void,Integer,String>
{
String result="";
ProgressDialog dialog=null;
String iFileName = CONST.USER_NAME+".db";
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
String Tag="fSnd";
@Override
protected void onPreExecute()
{
Log.i("AsynUpload is callinmg...", "calling");
dialog=new ProgressDialog(Upload_Database.this);
dialog.setMessage("File uploading...");
dialog.setCancelable(false);
dialog.show();
}
@Override
protected String doInBackground(Void... params) {
try
{
UTILITIES.copyDBToSDCard();
String selectedFilePath = "/data/data/com.DxS.androidSunTec.visioapp/databases/"+CONST.USER_NAME+".db";
FileInputStream fstrm = new FileInputStream(selectedFilePath);
URL connectURL = new URL(CUSTOM_URL.UPLOAD_URL+"Default.aspx");
HttpURLConnection conn = (HttpURLConnection)connectURL.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);
conn.setRequestProperty("FILE_NAME", ""+CONST.USER_NAME+".db");
DataOutputStream dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"title\""+ lineEnd);
dos.writeBytes(lineEnd);
dos.writeBytes(""+CONST.USER_NAME);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"description\""+ lineEnd);
dos.writeBytes(lineEnd);
dos.writeBytes(loc_code+"~"+user_code+"~"+fyid);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + iFileName +"\"" + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
int bytesAvailable = fstrm.available();
int maxBufferSize = 1024;
int bufferSize = Math.min(bytesAvailable, maxBufferSize);
byte[ ] buffer = new byte[bufferSize];
// read file and write it into form...
int bytesRead = fstrm.read(buffer, 0, bufferSize);
while (bytesRead > 0)
{
dos.write(buffer, 0, bufferSize);
bytesAvailable = fstrm.available();
bufferSize = Math.min(bytesAvailable,maxBufferSize);
bytesRead = fstrm.read(buffer, 0,bufferSize);
}
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// close streams
fstrm.close();
// 103424
dos.flush();
InputStream is = conn.getInputStream();
// retrieve the response from server
int ch;
StringBuffer b =new StringBuffer();
while( ( ch = is.read() ) != -1 ){ b.append( (char)ch ); }
String s=b.toString();
Log.i("Response",s);
dos.close();
result="OK";
}
catch (MalformedURLException ex)
{
result = "MalformedURLException";
Log.i(Tag, "URL error: " + ex.getMessage(), ex);
}
catch (IOException ioe)
{
result = "IOException";
Log.i(Tag, "IO error: " + ioe.getMessage(), ioe);
}
catch(Exception e)
{
Log.e("Exception","Exception"+e.getMessage());
result="FAILURE";
}
finally
{
if (result.equalsIgnoreCase("OK"))
{
File file = new File("/data/data/com.test.app/databases/"+CONST.USER_NAME+".db");
if(file.exists())
{
file.delete();
Log.i("uploading database file Deleted from sd card :", "deleted");
}
file = new File("/data/data/com.test.app/databases/"+DatabaseHelper.DB_NAME);
if(file.exists())
{
file.delete();
Log.i("Original database file Deleted from sd card :", "deleted");
}
MyActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
AlertDialog.Builder builder = new AlertDialog.Builder(MyActivity.this);
LayoutInflater inflater = getLayoutInflater();
View vw = inflater.inflate(R.layout.custom_title, null);
builder.setCustomTitle(vw);
builder.setMessage("File uploaded successfully!")
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
finish();
}
});
builder.create();
builder.show();
}
});
}
else
{
MyActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
AlertDialog.Builder builder = new AlertDialog.Builder(MyActivity.this);
LayoutInflater inflater = getLayoutInflater();
View vw = inflater.inflate(R.layout.custom_title, null);
builder.setCustomTitle(vw);
builder.setMessage("File uploading failed, please try again!")
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
builder.create();
builder.show();
}
});
}
}
return result;
}
@Override
protected void onProgressUpdate(Integer... values)
{
super.onProgressUpdate(values);
// dialog.incrementProgressBy(5);
}
@Override
protected void onPostExecute(String result)
{
dialog.dismiss();
if (result.equalsIgnoreCase("OK"))
{
}
else
{
}
}
}
3.) 实用程序类：
public static void copyDBToSDCard() {
try {
InputStream myInput = new FileInputStream("/data/data/com.DxS.androidSunTec.visioapp/databases/"+DatabaseHelper.DB_NAME);
Log.i("sd card path: ", ""+Environment.getExternalStorageDirectory().getPath().toString());
// File file = new File(Environment.getExternalStorageDirectory().getPath()+"/"+CONST.USER_NAME+".db");
File file = new File("/data/data/com.DxS.androidSunTec.visioapp/databases/"+CONST.USER_NAME+".db");
if (!file.exists()){
try {
file.createNewFile();
} catch (IOException e) {
Log.i("FO","File creation failed for " + file);
}
}
// OutputStream myOutput = new FileOutputStream(Environment.getExternalStorageDirectory().getPath()+"/"+CONST.USER_NAME+".db");
OutputStream myOutput = new FileOutputStream("/data/data/com.DxS.androidSunTec.visioapp/databases/"+CONST.USER_NAME+".db");
byte[] buffer = new byte[1024];
int length;
while ((length = myInput.read(buffer))>0){
myOutput.write(buffer, 0, length);
}
//Close the streams
myOutput.flush();
myOutput.close();
myInput.close();
Log.i("FO","copied");
} catch (Exception e) {
Log.i("FO","exception="+e);
}
}