/**
* Lädt über eine URLConnection eine Datei herunter. Zieldatei ist file.
*
* @param file
* @param con
* @return Erfolg true/false
* @throws IOException
*/
public static void download(final File file, final HTTPConnectionImpl con) throws IOException {
if (file.isFile()) {
if (!file.delete()) {
System.out.println("Konnte Datei nicht löschen " + file);
throw new IOException("Could not overwrite file: " + file);
}
}
final File parentFile = file.getParentFile();
if (parentFile != null && !parentFile.exists()) {
parentFile.mkdirs();
}
file.createNewFile();
FileOutputStream fos = null;
BufferedOutputStream output = null;
BufferedInputStream input = null;
boolean okay = false;
try {
output = new BufferedOutputStream(fos = new FileOutputStream(file, false));
input = new BufferedInputStream(con.getInputStream());
final byte[] b = new byte[1024];
int len;
while ((len = input.read(b)) != -1) {
output.write(b, 0, len);
}
okay = true;
} finally {
try {
output.close();
} catch (final Throwable e) {
}
try {
input.close();
} catch (final Throwable e) {
}
try {
fos.close();
} catch (final Throwable e) {
}
if (okay == false) {
file.delete();
}
}
}
