LocalDateTimeTool工具类

一、代码

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.temporal.TemporalAdjusters;

/**
 * @author Alan Chen
 * @description LocalDateTime工具类
 * JDK 1.8以上
 * 一般用于报表统计:日统计、周统计、月统计
 * @date 2024-01-02
 */
public class LocalDateTimeTool {

    /**
     * 今天开始时间
     *
     * @return
     */
    public static LocalDateTime startOfTodayTime() {
        LocalDateTime now = LocalDateTime.now();
        LocalDateTime todayStart = now.with(LocalTime.MIN);
        return todayStart;
    }

    /**
     * 今天结束时间
     *
     * @return
     */
    public static LocalDateTime endOfTodayTime() {
        LocalDateTime now = LocalDateTime.now();
        LocalDateTime todayEnd = now.with(LocalTime.MAX);
        return todayEnd;
    }

    /**
     * 本周开始时间
     *
     * @return
     */
    public static LocalDateTime startOfWeekTime() {
        LocalDate today = LocalDate.now();
        LocalDate startOfWeek = today.with(TemporalAdjusters.previousOrSame(DayOfWeek.MONDAY));
        LocalDateTime startOfWeekDateTime = LocalDateTime.of(startOfWeek, LocalTime.MIN);
        return startOfWeekDateTime;
    }

    /**
     * 本周结束时间
     *
     * @return
     */
    public static LocalDateTime endOfWeekTime() {
        LocalDate today = LocalDate.now();
        LocalDate endOfWeek = today.with(TemporalAdjusters.nextOrSame(DayOfWeek.SUNDAY));
        LocalDateTime endOfWeekDateTime = LocalDateTime.of(endOfWeek, LocalTime.MAX);
        return endOfWeekDateTime;
    }

    /**
     * 本月开始时间
     *
     * @return
     */
    public static LocalDateTime startOfMonthTime() {
        LocalDateTime now = LocalDateTime.now();
        LocalDateTime startOfMonth = now.with(TemporalAdjusters.firstDayOfMonth()).with(LocalTime.MIN);
        return startOfMonth;
    }

    /**
     * 本月结束时间
     *
     * @return
     */
    public static LocalDateTime endOfMonthTime() {
        LocalDateTime now = LocalDateTime.now();
        LocalDateTime endOfMonth = now.with(TemporalAdjusters.lastDayOfMonth()).with(LocalTime.MAX);
        return endOfMonth;
    }

    /**
     * 获取amount天前的开始时间
     *
     * @return
     */
    public static LocalDateTime startOfTime(int amount) {
        LocalDate localDate = LocalDate.now();
        LocalDate beforeDay = localDate.plusDays(-amount);
        LocalDateTime beforeDayTime = LocalDateTime.of(beforeDay, LocalTime.MIN);//当天00:00:00
        return beforeDayTime;
    }

    /**
     * 获取前amount天前的结束时间
     *
     * @return
     */
    public static LocalDateTime endOfTime(int amount) {
        LocalDate localDate = LocalDate.now();
        LocalDate beforeDay = localDate.plusDays(-amount);
        LocalDateTime beforeDayTime = LocalDateTime.of(beforeDay, LocalTime.MAX);//当天23:59:59
        return beforeDayTime;
    }
}