JAVA 獲取當天、昨天、當月、上個月 的開始和結束日期時間

DateUtil：

 

import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.Calendar;
import java.util.HashMap;
import java.util.Map;
import java.util.TimeZone;

/**
 * @Author : JCccc
 * @CreateTime : 2020/2/27
 * @Description :
 **/
public class DateUtil {

    /**
     * 獲取今天開始時間和結束時間
     *
     * @return
     */
    public static Map getTodayTime() {
        Long startTime = getStartTime();
        Long endTime = getEndTime();
        DateTimeFormatter ftf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        String startTimeStr = ftf.format(LocalDateTime.ofInstant(Instant.ofEpochMilli(startTime), ZoneId.systemDefault()));
        String endTimeStr = ftf.format(LocalDateTime.ofInstant(Instant.ofEpochMilli(endTime), ZoneId.systemDefault()));
        Map map = new HashMap();
        map.put("startDate", startTimeStr);
        map.put("endDate", endTimeStr);
        return map;
    }

    /**
     * 獲取昨天開始時間和結束時間
     *
     * @return
     */
    public static Map getYesterdayTime() {
        Long startTime = getStartTime() - 86400000;
        Long endTime = getEndTime() - 86400000;
        DateTimeFormatter ftf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        String startTimeStr = ftf.format(LocalDateTime.ofInstant(Instant.ofEpochMilli(startTime), ZoneId.systemDefault()));
        String endTimeStr = ftf.format(LocalDateTime.ofInstant(Instant.ofEpochMilli(endTime), ZoneId.systemDefault()));
        Map map = new HashMap();
        map.put("startDate", startTimeStr);
        map.put("endDate", endTimeStr);
        return map;
    }

    /**
     * 獲取當月開始時間和結束時間
     *
     * @return
     */
    public static Map getMonthTime() {
        Long startTime = getMonthStartTime();
        Long endTime = getMonthEndTime();
        DateTimeFormatter ftf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        String startTimeStr = ftf.format(LocalDateTime.ofInstant(Instant.ofEpochMilli(startTime), ZoneId.systemDefault()));
        String endTimeStr = ftf.format(LocalDateTime.ofInstant(Instant.ofEpochMilli(endTime), ZoneId.systemDefault()));
        Map map = new HashMap();
        map.put("startDate", startTimeStr);
        map.put("endDate", endTimeStr);
        return map;
    }

    /**
     * 獲取上個月月開始時間和結束時間
     *
     * @return
     */
    public static Map getLastMonthTime() throws Exception {
        Long startTime = getLastMonthStartTime();
        Long endTime = getLastMonthEndTime();
        DateTimeFormatter ftf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        String startTimeStr = ftf.format(LocalDateTime.ofInstant(Instant.ofEpochMilli(startTime), ZoneId.systemDefault()));
        String endTimeStr = ftf.format(LocalDateTime.ofInstant(Instant.ofEpochMilli(endTime), ZoneId.systemDefault()));
        Map map = new HashMap();
        map.put("startDate", startTimeStr);
        map.put("endDate", endTimeStr);
        return map;
    }


    /**
     * 獲取今天開始時間
     */
    private static Long getStartTime() {
        Calendar todayStart = Calendar.getInstance();
        todayStart.set(Calendar.HOUR, 0);
        todayStart.set(Calendar.MINUTE, 0);
        todayStart.set(Calendar.SECOND, 0);
        todayStart.set(Calendar.MILLISECOND, 0);
        return todayStart.getTime().getTime();
    }

    /**
     * 獲取今天結束時間
     */
    private static Long getEndTime() {
        Calendar todayEnd = Calendar.getInstance();
        todayEnd.set(Calendar.HOUR, 23);
        todayEnd.set(Calendar.MINUTE, 59);
        todayEnd.set(Calendar.SECOND, 59);
        todayEnd.set(Calendar.MILLISECOND, 999);
        return todayEnd.getTime().getTime();
    }


    /**
     * 獲取當月開始時間
     */
    public static Long getMonthStartTime() {

        Long currentTime = System.currentTimeMillis();

        String timeZone = "GMT+8:00";
        Calendar calendar = Calendar.getInstance();// 獲取當前日期
        calendar.setTimeZone(TimeZone.getTimeZone(timeZone));
        calendar.setTimeInMillis(currentTime);
        calendar.add(Calendar.YEAR, 0);
        calendar.add(Calendar.MONTH, 0);
        calendar.set(Calendar.DAY_OF_MONTH, 1);// 設置爲1號,當前日期既爲本月第一天
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND, 0);
        return calendar.getTimeInMillis();


    }

    /**
     * 獲取當月的結束時間戳
     */
    public static Long getMonthEndTime() {
        Long currentTime = System.currentTimeMillis();

        String timeZone = "GMT+8:00";
        Calendar calendar = Calendar.getInstance();// 獲取當前日期
        calendar.setTimeZone(TimeZone.getTimeZone(timeZone));
        calendar.setTimeInMillis(currentTime);
        calendar.add(Calendar.YEAR, 0);
        calendar.add(Calendar.MONTH, 0);
        calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));// 獲取當前月最後一天
        calendar.set(Calendar.HOUR_OF_DAY, 23);
        calendar.set(Calendar.MINUTE, 59);
        calendar.set(Calendar.SECOND, 59);
        calendar.set(Calendar.MILLISECOND, 999);
        return calendar.getTimeInMillis();
    }


    public static Long getLastMonthStartTime() throws Exception {
        Long currentTime = System.currentTimeMillis();

        String timeZone = "GMT+8:00";
        Calendar calendar = Calendar.getInstance();// 獲取當前日期
        calendar.setTimeZone(TimeZone.getTimeZone(timeZone));
        calendar.setTimeInMillis(currentTime);
        calendar.add(Calendar.YEAR, 0);
        calendar.add(Calendar.MONTH, -1);
        calendar.set(Calendar.DAY_OF_MONTH, 1);// 設置爲1號,當前日期既爲本月第一天
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND, 0);

        return calendar.getTimeInMillis();
    }


    public static Long getLastMonthEndTime() {
        Long currentTime = System.currentTimeMillis();

        String timeZone = "GMT+8:00";
        Calendar calendar = Calendar.getInstance();// 獲取當前日期
        calendar.setTimeZone(TimeZone.getTimeZone(timeZone));
        calendar.setTimeInMillis(currentTime);
        calendar.add(Calendar.YEAR, 0);
        calendar.add(Calendar.MONTH, -1);
        calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));// 獲取當前月最後一天
        calendar.set(Calendar.HOUR_OF_DAY, 23);
        calendar.set(Calendar.MINUTE, 59);
        calendar.set(Calendar.SECOND, 59);
        calendar.set(Calendar.MILLISECOND, 999);

        return calendar.getTimeInMillis();
    }


    public static void main(String[] args) throws Exception {
        Map todayTime = getTodayTime();
        System.out.println("今天：" + todayTime.toString());

        Map yesterdayTime = getYesterdayTime();
        System.out.println("昨天：" + yesterdayTime.toString());
        
        Map monthTime = getMonthTime();
        System.out.println("當月：" + monthTime.toString());
        
        Map lastMonthTime = getLastMonthTime();
        System.out.println("上個月：" + lastMonthTime.toString());


    }
}

運行結果：