用JAVA相关类转换。代码如下:

Calendar calendar = Calendar.getInstance();         calendar.setTimeInMillis(NumberUtils.getLong(mss) * 1000);         //mss即是从服务器获取的时间戳         SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");         String date = sf.format(calendar.getTime());          //date即是已转换好的时间。

/**     * 时间戳转换成日期格式字符串     * @param seconds 精确到秒的字符串     * @param formatStr     * @return     */    public static String timeStamp2Date(String seconds,String format) {        if(seconds == null || seconds.isEmpty() || seconds.equals("null")){            return "";        }        if(format == null || format.isEmpty()) format = "yyyy-MM-dd HH:mm:ss";        SimpleDateFormat sdf = new SimpleDateFormat(format);        return sdf.format(new Date(Long.valueOf(seconds+"000")));    }    /**     * 日期格式字符串转换成时间戳     * @param date 字符串日期     * @param format 如：yyyy-MM-dd HH:mm:ss     * @return     */    public static String date2TimeStamp(String date_str,String format){        try {            SimpleDateFormat sdf = new SimpleDateFormat(format);            return String.valueOf(sdf.parse(date_str).getTime()/1000);        } catch (Exception e) {            e.printStackTrace();        }        return "";    }         /**     * 取得当前时间戳（精确到秒）     * @return     */    public static String timeStamp(){        long time = System.currentTimeMillis();        String t = String.valueOf(time/1000);        return t;    }         //  输出结果：    //  timeStamp=1417792627    //  date=2014-12-05 23:17:07    //  1417792627    public static void main(String[] args) {        String timeStamp = timeStamp();        System.out.println("timeStamp="+timeStamp);                 String date = timeStamp2Date(timeStamp, "yyyy-MM-dd HH:mm:ss");        System.out.println("date="+date);                 String timeStamp2 = date2TimeStamp(date, "yyyy-MM-dd HH:mm:ss");        System.out.println(timeStamp2);    }              //将时间戳转换为时分秒               String date = "142925";         SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");        Date currentTime = new Date();        String dateString = dateFormat.format(currentTime);        System.out.println(dateString);