时间戳转成日期，解决总是日期总是1970年

//timestamp 转Date 字符串public static String getDateStringByTimeSTamp(Long timeStamp){ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); // 秒级别的是要乘以1000，毫秒级别就不需要了return sdf.format(new Date(timeStamp*1000));}//timestamp 转Date 字符串public static String TimeStamp2Date(Timestamp timestamp){long timest = timestamp.getTime();//获取的是是毫秒SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String dateStr = sdf.format(new Date(timest));return dateStr;}