Demanda, ahora hay algo que se usa durante todo el día, necesito calcular cuánto tiempo usa cada día
Entidad de período de tiempo:
import lombok.Data; import java.text.SimpleDateFormat; import java.util.Date; / ** * período de tiempo * / @Data public class DateRange { private Date begin; // start time private Date end; // end time / / Solo para facilitar la visualización, no use este fantasma en el desarrollo real. Public String toString () { return "{" + new SimpleDateFormat ("aaaa-MM-dd HH: mm: ss"). Formatear (comenzar) + "," + nuevo SimpleDateFormat ("aaaa-MM-dd HH: mm: ss"). Formato (final) + "}" ; } }
Método de cálculo, ambos métodos harán
/ ** * 按 小时 计算, 分隔 * * @param begin * @param end * @return * / public static List <DateRange> splitDateRangeByHour (Fecha de inicio, Fecha de finalización) { System.out.println ( "按 小时 切割" ) ; Calendario calendario = Calendar.getInstance (); calendar.setTime (comenzar); List <DateRange> list = Lists.newArrayList (); Rango de Rango de Fecha = nuevo Rango de Fecha (); range.setBegin (comenzar); while ( cierto) { calendar.add (Calendar.HOUR_OF_DAY, 1 ); if (calendar.getTime (). after (end)) { range.setEnd (end); list.add (range); break ; } if (calendar.get ( Calendar.HOUR_OF_DAY) == 23 ) { calendar.set (Calendar.MINUTE, 59 ); calendar.set (Calendar.SECOND, 59 ); calendar.set (Calendar.MILLISECOND, 0 ); range.setEnd (calendar.getTime ( )); list.add (range); // Calcular el día siguiente y crear un nuevo período de tiempo calendar.add (Calendar.SECOND, 1 ); range = new DateRange (); range.setBegin (calendar.getTime ()); continuar ; } } lista de retorno ; } / ** * Separado por cálculo del día (alta eficiencia, solo Hay un problema durante más de un día) * * @param begin * @param end * @return * / public static List <DateRange> splitDateRangeByDay (Fecha de inicio, Fecha de finalización) { System.out.println ( "Cortar por día" ); largotime = end.getTime () - begin.getTime (); if (time == 0 ) { return Lists.newArrayList (); } largas horas = tiempo / (60 * 60 * 1000 ); if (tiempo% (60 * 60 * 1000)> 0 ) { horas + = 1 ; } if (horas <= 24 ) { return splitDateRangeByHour (comienzo, fin); } Calendario calendario = Calendar.getInstance (); calendar.setTime (comenzar); List <DateRange> list = Lists.newArrayList (); Rango de DateRange= nuevo DateRange (); range.setBegin (comenzar); while ( verdadero ) { calendar.add (Calendar.DAY_OF_YEAR, 1 ); if (calendar.getTime (). after (end)) { range.setEnd (end); list.add (rango); romper ; } calendar.set (Calendar.HOUR_OF_DAY, 0 ); calendar.set (Calendar.MINUTE, 0 ); calendar.set (Calendar.SECOND, 0 ); calendar.set (Calendar.MILLISECOND, 0 ); // Inicio de hoy Fecha tmpBeginTime = calendar.getTime (); // Calcular el último segundo del día anterior calendar.add (Calendar.SECOND, -1 ); range.setEnd (calendar.getTime ()); list.add (rango); // Crear un nuevo rango de tiempo rango = nuevo DateRange (); rango.setBegin (tmpBeginTime); // Volver a hoy calendar.add (Calendar.SECOND, +1 ); } lista de retorno ; }
Pruebas y resultados.
// 按 天 public static void main (String [] args) lanza ParseException { Date begin = new SimpleDateFormat ("aaaa-MM-dd HH: mm: ss"). Parse ("2019-02-27 08:00:12 " ); Fecha de finalización = nuevo SimpleDateFormat ("aaaa-MM-dd HH: mm: ss"). Parse ("2019-03-03 12:01:08" ); List <DateRange> dateRanges = splitDateRangeByDay (comienzo, fin); System.out.println (dateRanges); } 输出 2019-02-28 08:00:12 2019-03-01 00:00:00 2019-03-02 00:00:00 2019-03-03 00:00:00 2019-03-04 00:00 : 00 1111 [{2019-02-27 08:00:12, 2019-02-27 23:59:59}, {2019-02-28 00:00:00, 2019-02-28 23:59:59}, {2019- 03-01 00:00:00, 2019-03-01 23:59:59}, {2019-03-02 00:00:00, 2019-03-02 23:59:59}, {2019-03- 03 00:00:00, 2019-03-03 12:01:08 }] // 按 小时 public static void main (String [] args) lanza ParseException { Date begin = new SimpleDateFormat ("aaaa-MM-dd HH: mm: ss "). parse (" 2019-02-27 08:00:12 " ); Fecha de finalización = nuevo SimpleDateFormat ("aaaa-MM-dd HH: mm: ss"). Parse ("2019-03-03 12:01:08" ); List <DateRange> dateRanges = System.out.println (dateRanges); } Salida 2019-02-27 09:00:12 2019-02-27 10:00:12 2019-02-27 11:00:12 2019-02-27 12:00:12 2019-02-27 13:00 : 12 2019-02-27 14:00:12 2019-02-27 15:00:12 2019-02-27 16:00:12 2019-02-27 17:00:12 2019-02-27 18:00 : 12 2019-02-27 19:00:12 2019-02-27 20:00:12 2019-02-27 21:00:12 2019-02-27 22:00:12 2019-02-27 23:00 : 12 2019-02-28 01:00:00 2019-02-28 02:00:00 2019-02-28 03:00:00 2019-02-28 04:00:00 2019-02-28 05:00 : 00 2019-02-28 06:00:00 2019-02-28 07:00:00 2019-02-28 08:00:00 2019-02-28 10:00 : 00 2019-02-28 09:00:00 2019-03-01 12:00:00 2019-02-28 11:00:00 2019-02-28 12:00:00 2019-02-28 13:00:00 2019-02-28 14:00:00 2019-02-28 15:00:00 2019-02-28 16:00:00 2019-02-28 17:00:00 2019-02-28 18:00:00 2019-02-28 19:00:00 2019-02-28 20:00:00 2019-02-28 21:00:00 2019-02-28 22:00:00 2019-02-28 23:00:00 2019-03-01 01:00:00 2019-03-01 02:00:00 2019-03-01 03:00:00 2019-03-01 04:00:00 2019-03-01 05:00:00 2019-03-01 06:00:00 2019-03-01 07:00:00 2019-03-01 08:00:00 2019-03-01 09:00:00 2019-03-01 10:00:00 2019-03-01 11:00:00 2019-03-01 14:00:00 2019-03-01 13:00:00 2019-03-02 16:00:00 2019-03-01 15:00:00 2019-03-01 16:00:00 2019-03-01 17:00:00 2019-03-01 18:00:00 2019-03-01 19:00:00 2019-03-01 20:00:00 2019-03-01 21:00:00 2019-03-01 22:00:00 2019-03-01 23:00:00 2019-03-02 01:00:00 2019-03-02 02:00:00 2019-03-02 03:00:00 2019-03-02 04:00:00 2019-03-02 05:00:00 2019-03-02 06:00:00 2019-03-02 07:00:00 2019-03-02 08:00:00 2019-03-02 09:00:00 2019-03-02 10:00:00 2019-03-02 11:00:00 2019-03-02 12:00:00 2019-03-02 13:00:00 2019-03-02 14:00:00 2019-03-02 15:00:00 2019-03-02 17:00:00 2019-03-02 18:00:00 19:00:00 2019-03-02 20:00:00 2019-03-02 21:00:00 2019-03-02 22:00:00 2019-03-02 23:00:00 2019-03-03 01:00:00 2019-03-03 02:00:00 2019-03-03 03:00:00 2019-03-03 04:00:00 2019-03-03 05:00:00 2019-03-03 06:00:00 2019-03-03 07:00:00 2019-03-03 08:00:00 2019-03-03 09:00:00 2019-03-03 10:00:00 2019-03-03 11:00:00 2019-03-03 12:00:00 2019-03-03 13:00:00 1111 [{2019-02-27 08:00:12, 2019-02-27 23:59:59}, {2019-02-28 00:00:00, 2019-02-28 23:59:59}, {2019- 03-01 00:00:00, 2019-03-01 23:59:59}, {2019-03-02 00:00:00, 2019-03-02 23:59:59}, {2019-03- 03 00:00:00, 2019-03-03 12:01:08}]
Enlaces relacionados: https://www.jianshu.com/p/e83e58c3e3a9