JAVA 獲取當天、昨天、當月、上個月 的開始和結束日期時間

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.*;

/**
* @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(); //當期時間

Long endTime = new Date().getTime(); //當期時間
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;
}

//獲取今天日期 年月日
public static Date getTodayYmd(){
Date now = new Date();
Calendar cal1 = Calendar.getInstance();
cal1.setTime(now);
// 將時分秒,毫秒域清零
cal1.set(Calendar.HOUR_OF_DAY, 0);
cal1.set(Calendar.MINUTE, 0);
cal1.set(Calendar.SECOND, 0);
cal1.set(Calendar.MILLISECOND, 0);
return cal1.getTime();
}

//獲取昨天日期 年月日
public static Date getYesterdayYmd() {
Calendar cal = new GregorianCalendar();
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
cal.add(Calendar.DAY_OF_MONTH, -1);
return cal.getTime();
}




/**
* 獲取昨天開始時間和結束時間
*
* @return
*/
public static Map getYesterdayTime() {
Long startTime = getBeginDayOfYesterday();
Long endTime = getEndDayOfYesterDay();
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;
}


//獲取月均開始和結束時間
public static Map getAverageTime(String minCreateTime) throws ParseException {


Long yesterdayTimeEnd =getEndDayOfYesterDay();

DateTimeFormatter ftf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
//昨天的時間
String yesterdayStr = ftf.format(LocalDateTime.ofInstant(Instant.ofEpochMilli(yesterdayTimeEnd), ZoneId.systemDefault()));
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String yesterdayBefore30Str = "";
Calendar calc = Calendar.getInstance();

calc.setTime(sdf.parse(yesterdayStr));
calc.add(calc.DATE, -30);
calc.set(Calendar.HOUR_OF_DAY, 0);
calc.set(Calendar.MINUTE, 0);
calc.set(Calendar.SECOND, 0);
calc.set(Calendar.MILLISECOND, 0);
Date minDate = calc.getTime();
yesterdayBefore30Str = sdf.format(minDate);

int num = daysBetween(yesterdayBefore30Str, yesterdayStr);

int checkNum = daysBetween(minCreateTime, yesterdayBefore30Str);
System.out.println("checkNum:"+checkNum);
Map map = new HashMap();
if (checkNum < 0) {
int numNew = daysBetween(minCreateTime, yesterdayStr);
map.put("startDate", minCreateTime);
map.put("endDate", yesterdayStr);
map.put("num", Math.abs(numNew)); //取絕對值
return map;
}

map.put("startDate", yesterdayBefore30Str);
map.put("endDate", yesterdayStr);
map.put("num", num);
return map;
}




public static int daysBetween(String smdate, String bdate) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar cal = Calendar.getInstance();
cal.setTime(sdf.parse(smdate));
long time1 = cal.getTimeInMillis();
cal.setTime(sdf.parse(bdate));
long time2 = cal.getTimeInMillis();
long between_days = (time2 - time1) / (1000 * 3600 * 24);
return Integer.parseInt(String.valueOf(between_days));

}


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

/**
* 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);// 設置為1號,當前日期既為本月第一天
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));// 獲取當前月最后一天
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);// 設置為1號,當前日期既為本月第一天
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));// 獲取當前月最后一天
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 getBeginDayOfYesterday() {
Calendar cal = new GregorianCalendar();
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
cal.add(Calendar.DAY_OF_MONTH, -1);
return cal.getTimeInMillis();
}




public static Long getEndDayOfYesterDay() {

Calendar cal = new GregorianCalendar();
cal.set(Calendar.HOUR_OF_DAY, 23);
cal.set(Calendar.MINUTE, 59);
cal.set(Calendar.SECOND, 59);
cal.add(Calendar.DAY_OF_MONTH, -1);


return cal.getTimeInMillis();
}








//獲取今年是哪一年

public static Integer getNowYear() {

Date date = new Date();

GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();

gc.setTime(date);

return Integer.valueOf(gc.get(1));

}


public static Map getThisYearTime() throws Exception {
Long startTime = getBeginDayOfYear();
Long endTime = getEndDayOfYear();
DateTimeFormatter ftf = DateTimeFormatter.ofPattern("yyyy-MM-dd");
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;
}

//獲取本年的開始時間

public static Long getBeginDayOfYear() {

Calendar cal = Calendar.getInstance();

cal.set(Calendar.YEAR, getNowYear());

// cal.set

cal.set(Calendar.MONTH, Calendar.JANUARY);

cal.set(Calendar.DATE, 1);



return getDayStartTime(cal.getTime());

}

//獲取本年的結束時間

public static Long getEndDayOfYear() {

Calendar cal = Calendar.getInstance();

cal.set(Calendar.YEAR, getNowYear());

cal.set(Calendar.MONTH, Calendar.DECEMBER);

cal.set(Calendar.DATE, 31);

return getDayEndTime(cal.getTime());

}

//獲取某個日期的開始時間

public static Long getDayStartTime(Date d) {

Calendar calendar = Calendar.getInstance();

if(null != d) calendar.setTime(d);

calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);

calendar.set(Calendar.MILLISECOND, 0);

return calendar.getTimeInMillis();

}

//獲取某個日期的結束時間

public static Long getDayEndTime(Date d) {

Calendar calendar = Calendar.getInstance();

if(null != d) calendar.setTime(d);

calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 23, 59, 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());
}

}