時間戳 date String轉換

public class TimeStamp {

    @Test
    public void testTimeStampChangeString() throws Exception{
        String date1 = timeStampChangeString1("1519810722","yyyy-MM-dd");
        System.out.println(date1);
    }

    @Test
    public void testStringChangeTimeStamp() throws Exception{
        Long date = stringChangeTimeStamp("2018-02-28 12:12:12","yyyy-MM-dd HH:mm:ss");
        System.out.println(date);
    }

    //時間戳轉字符串(1)
    public static String timeStampChangeString1(String timeStampString, String format){
        if(StringUtils.isBlank(format)){
            format = "yyyy-MM-dd HH:mm:ss";
        }
        Long timeStamp = Long.parseLong(timeStampString)*1000L;
        String date = new SimpleDateFormat(format, Locale.CHINA).format(new Date(timeStamp));
        return date;
    }

    //字符串轉時間戳
    public static Long stringChangeTimeStamp(String timeString, String format) throws Exception{
        SimpleDateFormat sdf = new SimpleDateFormat(format);
        Long date = sdf.parse(timeString).getTime()/1000L;
        return date;
    }

    //js字符串轉時間戳
    /*var createTimeGte = $("#userQueryForm_${timestamp} #createTimeGte_${timestamp}").val().trim();
        if(createTimeGte){
        createTimeGte = createTimeGte + ' 00:00:00';
        ctg = new Date(createTimeGte).getTime() / 1000;
        }*/
}