获取 昨天这个时间的时间戳
Calendar calendar = Calendar . getInstance ( ) ; calendar. add ( Calendar . DAY_OF_YEAR , - 1 ) ; Long dd = calendar. getTime ( ) . getTime ( ) / 1000 ; System . out. println ( dd) ;
计算今天0点的时间戳
Long time = System . currentTimeMillis ( ) ; long zero = time/ ( 1000 * 3600 * 24 ) * ( 1000 * 3600 * 24 ) - TimeZone . getDefault ( ) . getRawOffset ( ) ; System . out. println ( new Timestamp ( zero) ) ; System . out. println ( zero/ 1000 ) ;
计算今天23点59分59秒的时间戳
Calendar calendar = Calendar . getInstance ( ) ; calendar. set ( calendar. get ( Calendar . YEAR ) , calendar. get ( Calendar . MONTH ) , calendar. get ( Calendar . DAY_OF_MONTH ) , 23 , 59 , 59 ) ; long tt = calendar. getTime ( ) . getTime ( ) / 1000 ; System . out. println ( tt) ;
计算昨天0点的时间戳
Calendar calendar = Calendar . getInstance ( ) ; calendar. set ( calendar. get ( Calendar . YEAR ) , calendar. get ( Calendar . MONTH ) , calendar. get ( Calendar . DAY_OF_MONTH ) - 1 , 0 , 0 , 0 ) ; long tt = calendar. getTime ( ) . getTime ( ) / 1000 ; System . out. println ( tt) ;
计算昨天23:59:59 秒的时间戳
Calendar calendar = Calendar . getInstance ( ) ; calendar. set ( calendar. get ( Calendar . YEAR ) , calendar. get ( Calendar . MONTH ) , calendar. get ( Calendar . DAY_OF_MONTH ) - 1 , 23 , 59 , 59 ) ; long tt = calendar. getTime ( ) . getTime ( ) / 1000 ; System . out. println ( tt) ;
计算近7日 0点的时间戳(不包含当天)
Calendar calendar = Calendar . getInstance ( ) ; calendar. set ( calendar. get ( Calendar . YEAR ) , calendar. get ( Calendar . MONTH ) , calendar. get ( Calendar . DAY_OF_MONTH ) - 7 , 0 , 0 , 0 ) ; long tt = calendar. getTime ( ) . getTime ( ) / 1000 ; System . out. println ( tt) ;
计算近30天 0点的时间戳(不包含当天)
Calendar calendar = Calendar . getInstance ( ) ; calendar. set ( calendar. get ( Calendar . YEAR ) , calendar. get ( Calendar . MONTH ) , calendar. get ( Calendar . DAY_OF_MONTH ) - 30 , 0 , 0 , 0 ) ; long tt = calendar. getTime ( ) . getTime ( ) / 1000 ; System . out. println ( tt) ;
计算上月第一天 0点的时间戳
Calendar calendar = Calendar . getInstance ( ) ; calendar. set ( calendar. get ( Calendar . YEAR ) , calendar. get ( Calendar . MONTH ) - 1 , 1 , 0 , 0 , 0 ) ; long tt = calendar. getTime ( ) . getTime ( ) / 1000 ; System . out. println ( tt) ;
计算上月最后一天 23点的时间戳
Calendar calendar = Calendar . getInstance ( ) ; calendar. set ( calendar. get ( Calendar . YEAR ) , calendar. get ( Calendar . MONTH ) - 1 , calendar. get ( Calendar . DAY_OF_MONTH ) , 23 , 59 , 59 ) ; calendar. set ( Calendar . DAY_OF_MONTH , calendar. getActualMaximum ( Calendar . DAY_OF_MONTH ) ) ; long tt = calendar. getTime ( ) . getTime ( ) / 1000 ; System . out. println ( tt)
计算上周周一 0点的时间戳
Calendar calendar = Calendar . getInstance ( ) ; calendar. set ( calendar. get ( Calendar . YEAR ) , calendar. get ( Calendar . MONDAY ) , calendar. get ( Calendar . DAY_OF_MONTH ) , 0 , 0 , 0 ) ; calendar. set ( Calendar . DAY_OF_WEEK , Calendar . MONDAY ) ; calendar. add ( Calendar . DATE , - 7 ) ; System . out. println ( calendar. getTime ( ) . getTime ( ) / 1000 ) ;
计算上周周日23点的时间戳
Calendar calendar = Calendar . getInstance ( ) ; calendar. set ( calendar. get ( Calendar . YEAR ) , calendar. get ( Calendar . MONDAY ) , calendar. get ( Calendar . DAY_OF_MONTH ) , 23 , 59 , 59 ) ; calendar. set ( Calendar . DAY_OF_WEEK , Calendar . MONDAY ) ; calendar. add ( Calendar . DATE , - 1 ) ; System . out. println ( calendar. getTime ( ) . getTime ( ) / 1000 ) ;
计算本月第一天0点的时间戳
Calendar calendar = Calendar . getInstance ( ) ; calendar. set ( calendar. get ( Calendar . YEAR ) , calendar. get ( Calendar . MONDAY ) , calendar. get ( Calendar . DAY_OF_MONTH ) , 0 , 0 , 0 ) ; calendar. set ( Calendar . DAY_OF_MONTH , calendar. getActualMinimum ( Calendar . DAY_OF_MONTH ) ) ; long tt = calendar. getTime ( ) . getTime ( ) / 1000 ; System . out. println ( tt) ;
计算本月最后一天23:59:59的时间戳
Calendar calendar = Calendar . getInstance ( ) ; calendar. set ( calendar. get ( Calendar . YEAR ) , calendar. get ( Calendar . MONDAY ) , calendar. get ( Calendar . DAY_OF_MONTH ) , 23 , 59 , 59 ) ; calendar. set ( Calendar . DAY_OF_MONTH , calendar. getActualMaximum ( Calendar . DAY_OF_MONTH ) ) ; long tt = calendar. getTime ( ) . getTime ( ) / 1000 ; System . out. println ( tt) ;