/**
* Convert the char array to byte array with respect to given charset.
*
* @param charArray
* @param strCharset null or "" means default charset
* @exception CharacterCodingException
*/
public static byte[] convertCharArrayToByteArray(char[] charArray, String strCharset)
throws CharacterCodingException {
if (charArray == null) {
return null;
}
char[] cArray = (char[]) charArray.clone();
CharBuffer charBuffer = CharBuffer.wrap(cArray);
Charset charSet;
if (strCharset == null || "".equals(strCharset)) {
charSet = Charset.defaultCharset();
} else if (Charset.isSupported(strCharset)) {
charSet = Charset.forName(strCharset);
} else {
CharacterCodingException e = new CharacterCodingException();
e.initCause(new UnsupportedCharsetException(strCharset));
throw e;
}
CharsetEncoder encoder = charSet.newEncoder();
ByteBuffer byteBuffer = null;
try {
byteBuffer = encoder.encode(charBuffer);
} catch (CharacterCodingException cce) {
throw cce;
} catch (Throwable t) {
CharacterCodingException e = new CharacterCodingException();
e.initCause(t);
throw e;
}
byte[] result = new byte[byteBuffer.remaining()];
byteBuffer.get(result);
clear(byteBuffer);
clear(charBuffer);
return result.clone();
}
/**
* Convert the byte array to char array with respect to given charset.
*
* @param byteArray
* @param charset null or "" means default charset
* @exception CharacterCodingException
*/
public static char[] convertByteArrayToCharArray(byte[] byteArray, String charset)
throws CharacterCodingException {
if (byteArray == null) {
return null;
}
byte[] bArray = (byte[]) byteArray.clone();
ByteBuffer byteBuffer = ByteBuffer.wrap(bArray);
Charset charSet;
if (charset == null || "".equals(charset)) {
charSet = Charset.defaultCharset();
} else if (Charset.isSupported(charset)) {
charSet = Charset.forName(charset);
} else {
CharacterCodingException e = new CharacterCodingException();
e.initCause(new UnsupportedCharsetException(charset));
throw e;
}
CharsetDecoder decoder = charSet.newDecoder();
CharBuffer charBuffer = null;
try {
charBuffer = decoder.decode(byteBuffer);
} catch (CharacterCodingException cce) {
throw cce;
} catch (Throwable t) {
CharacterCodingException e = new CharacterCodingException();
e.initCause(t);
throw e;
}
char[] result = (char[]) charBuffer.array().clone();
clear(byteBuffer);
clear(charBuffer);
return result;
}