LocalDate获取一年月份和开始结束日期

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import java.time.temporal.TemporalAdjusters;
import java.util.ArrayList;
import java.util.List;

public class LocalDateTest {

    public static void main(String[] args) throws Exception {
        Integer defaultYear = 2025;
        //获取一年开始日期
        LocalDate startDate = LocalDate.of(defaultYear, 1, 1);
        //获取一年结束日期
        LocalDate endDate = LocalDate.of(defaultYear, 12, 31);

        List<LocalDate> manths = getMonthsBetween(startDate, endDate);
        DateTimeFormatter pattern = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        DateTimeFormatter pattern2 = DateTimeFormatter.ofPattern("yyyy.MM");
        for (LocalDate localDate : manths) {
            //System.out.println(localDate.getMonthValue());
            LocalDate firstDayOfMonth = localDate.withDayOfMonth(1);
            LocalDate lastDayOfMonth = localDate.with(TemporalAdjusters.lastDayOfMonth());
            // 获取当前月份的开始时间和结束时间（假设开始时间为00:00:00，结束时间为23:59:59）
            LocalDateTime startOfMonth = LocalDateTime.of(firstDayOfMonth, LocalTime.MIDNIGHT);
            LocalDateTime endOfMonth = LocalDateTime.of(lastDayOfMonth, LocalTime.MAX);
            String s2 = firstDayOfMonth.format(pattern2);
            String s = startOfMonth.format(pattern);
            String e = endOfMonth.format(pattern);

            System.out.println(s2 + " " + s + "~" + e);

        }

    }


    public static List<LocalDate> getMonthsBetween(LocalDate start, LocalDate end) {
        List<LocalDate> months = new ArrayList<>();
        LocalDate current = start.withDayOfMonth(1);
        while (current.isBefore(end.plusDays(1)) || current.isEqual(end)) {
            months.add(current);
            current = current.plus(1, ChronoUnit.MONTHS);
        }
        return months;
    }

}

 

2025.01 2025-01-01 00:00:00~2025-01-31 23:59:59
2025.02 2025-02-01 00:00:00~2025-02-28 23:59:59
2025.03 2025-03-01 00:00:00~2025-03-31 23:59:59
2025.04 2025-04-01 00:00:00~2025-04-30 23:59:59
2025.05 2025-05-01 00:00:00~2025-05-31 23:59:59
2025.06 2025-06-01 00:00:00~2025-06-30 23:59:59
2025.07 2025-07-01 00:00:00~2025-07-31 23:59:59
2025.08 2025-08-01 00:00:00~2025-08-31 23:59:59
2025.09 2025-09-01 00:00:00~2025-09-30 23:59:59
2025.10 2025-10-01 00:00:00~2025-10-31 23:59:59
2025.11 2025-11-01 00:00:00~2025-11-30 23:59:59
2025.12 2025-12-01 00:00:00~2025-12-31 23:59:59