简单的时间转换类

  public static final String pattern = "yyyy-MM-dd HH:mm:ss";

    public static String getTime(Date date){
        return date != null ? formatDate(date,pattern): null;
    }

    public static Date getTime(String date) {
        return date != null && date != "" ? parse(date,pattern) : null;
    }

    public static Date parse(String date,String pattern){
        SimpleDateFormat sdf = new SimpleDateFormat(pattern);
        try {
           return sdf.parse(date);
        }catch(ParseException e) {
            log.error(e);
            return null;
        }
    }

    public static String formatDate(Date date,String pattern){
        if (date == null){
            return "";
        }
        SimpleDateFormat sdf = new SimpleDateFormat(pattern);
        return sdf.format(date);
    }