最近，做一個關於SMS的程式，需要對中文部分進行UCS編碼，這裡用了兩個函式，可以將簡訊中的UCS2字串在UCS2和GBK之間裝換。記錄以下程式碼：

    /**
     * UCS2解碼
     * 
     * @param src
     *            UCS2 源串
     * @return 解碼後的UTF-16BE字串
     */
    public static String DecodeUCS2(String src) {
        byte[] bytes = new byte[src.length() / 2];

        for (int
 
 i = 0; i < src.length(); i += 2) {
            bytes[i / 2] = (byte) (Integer
                    .parseInt(src.substring(i, i + 2), 16));
        }
        String reValue;
        try {
            reValue = new String(bytes, "UTF-16BE");
        } catch (UnsupportedEncodingException e) {
            throw
 
 new PduDecodeException(e);
        }
        return reValue;

    }

    /**
     * UCS2編碼
     * 
     * @param src
     *            UTF-16BE編碼的源串
     * @return 編碼後的UCS2串
     */
    public static String EncodeUCS2(String src) {

        byte[] bytes;
        try {
            bytes = src.getBytes("UTF-16BE"
 
);
        } catch (UnsupportedEncodingException e) {
            throw new PduEncodeException(e);
        }

        StringBuffer reValue = new StringBuffer();
        StringBuffer tem = new StringBuffer();
        for (int i = 0; i < bytes.length; i++) {
            tem.delete(0, tem.length());
            tem.append(Integer.toHexString(bytes[i] & 0xFF));
            if(tem.length()==1){
                tem.insert(0, '0');
            }
            reValue.append(tem);
        }
        return reValue.toString().toUpperCase();
    }