public class TimeCalculateUtil {
private static SimpleDateFormat sdf1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
private static SimpleDateFormat sdf2 = new SimpleDateFormat("yyyy-MM-dd");
private static SimpleDateFormat sdf3 = new SimpleDateFormat("yyyy-MM");
private static SimpleDateFormat sdf4 = new SimpleDateFormat("yyyy");
private static SimpleDateFormat sdf5 = new SimpleDateFormat("MM");
private static SimpleDateFormat sdf6 = new SimpleDateFormat("dd");
private static SimpleDateFormat sdf7 = new SimpleDateFormat("HH:mm:ss");
public static void main(String[] args) throws ParseException {
String stStr = "2022-08-02 00:00:00";
String edStr = "2022-08-01 17:59:59";
// Long stTime = TimeCutUtil.dateToStamp(beginStr);
// DateUtil.getDays(new Date(stTime).getYear(), new Date(stTime).getMonth());
Date stDate = sdf1.parse(stStr);
Date edDate = sdf1.parse(edStr);
System.out.println(stDate.getTime());
System.out.println(edDate);
int i = differentDays(stDate, edDate);
System.out.println(i);
}
/**
* 日期转格式化字符串
*
* @param type 格式化类型：1=yyyy-MM-dd HH:mm:ss，2=yyyy-MM-dd，3=yyyy-MM，
* 4=yyyy，5=MM，6=dd，7=HH:mm:ss
* @param date 格式化时间
*/
public static String dateToFormatString(int type, Date date){
String r = null;
switch (type){
case 1:
r = sdf1.format(date);
break;
case 2:
r = sdf2.format(date);
break;
case 3:
r = sdf3.format(date);
break;
case 4:
r = sdf4.format(date);
break;
case 5:
r = sdf5.format(date);
break;
case 6:
r = sdf6.format(date);
break;
case 7:
r = sdf7.format(date);
break;
}
return r;
}
/**
* 字符串转格式化日期
*
* @param type 格式化类型：1=yyyy-MM-dd HH:mm:ss，2=yyyy-MM-dd，3=yyyy-MM，
* 4=yyyy，5=MM，6=dd，7=HH:mm:ss
* @param date 格式化时间
*/
public static Date stringToFormatDate(int type, String date){
Date r = null;
try {
switch (type) {
case 1:
r = sdf1.parse(date);
break;
case 2:
r = sdf2.parse(date);
break;
case 3:
r = sdf3.parse(date);
break;
case 4:
r = sdf4.parse(date);
break;
case 5:
r = sdf5.parse(date);
break;
case 6:
r = sdf6.parse(date);
break;
case 7:
r = sdf7.parse(date);
break;
}
} catch (Exception ex){
ex.printStackTrace();
return null;
}
return r;
}
/**
* 获取某年某月的最后一天 如201712结果为2017-12-30
* @param year 年
* @param month 月
* @return
*/
public static String getLastDay(String year,String month){
LocalDate firstDayOfCurrentDate = LocalDate.of(Integer.parseInt(year), Integer.parseInt(month), 1);
LocalDate lastDayOfCurrentDate = firstDayOfCurrentDate.with(TemporalAdjusters.lastDayOfMonth());
return lastDayOfCurrentDate.toString();
}
/**
* 计算当前月有多少天
*
* @param year 年
* @param month 月
* @return 天数
*/
public static int getDays(int year, int month) {
int days = 0;
if (month != 2) {
switch (month) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
days = 31;
break;
case 4:
case 6:
case 9:
case 11:
days = 30;
}
} else {
// 闰年
if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0)
days = 29;
else
days = 28;
}
System.out.println("当月有" + days + "天！");
return days;
}
/**
* edDate比stDate多的天数
*
* @param stDate 开始时间
* @param edDate 结束时间
* @return
*/
public static int differentDays(Date stDate, Date edDate) {
Calendar cal1 = Calendar.getInstance();
cal1.setTime(stDate);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(edDate);
int day1 = cal1.get(Calendar.DAY_OF_YEAR);
int day2 = cal2.get(Calendar.DAY_OF_YEAR);
int year1 = cal1.get(Calendar.YEAR);
int year2 = cal2.get(Calendar.YEAR);
if (year1 != year2) {//同一年
int timeDistance = 0;
for (int i = year1; i < year2; i++) {
if (i % 4 == 0 && i % 100 != 0 || i % 400 == 0) //闰年
{
timeDistance += 366;
} else //不是闰年
{
timeDistance += 365;
}
}
return timeDistance + (day2 - day1);
} else {// 不同年
System.out.println("判断day2 - day1 : " + (day2 - day1));
return day2 - day1;
}
}
/**
* edDate比stDate多的几分钟
*
* @param stDate 开始时间
* @param edDate 结束时间
* @return
*/
public static int differentMinutes(Date stDate, Date edDate) {
long millis = edDate.getTime() - stDate.getTime();
long minutes = millis / 1000 / 60;
return (int) minutes;
}
/**
* edDate比stDate多的几分钟
*
* @param stDate 开始时间
* @param edDate 结束时间
* @return
*/
public static Double differentHours(Date stDate, Date edDate) {
long millis = edDate.getTime() - stDate.getTime();
Double hours = new BigDecimal(millis / 1000 / 60 / 60D).setScale(2,BigDecimal.ROUND_HALF_UP).doubleValue();
return hours;
}
/**
* 判断当前日期是星期几
*
* @param pTime 修要判断的时间
* @return dayForWeek 判断结果
* @Exception 发生异常
*/
public static int dayForWeek(String pTime) {
int dayForWeek = 0;
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
Calendar c = Calendar.getInstance();
try {
c.setTime(format.parse(pTime));
if (c.get(Calendar.DAY_OF_WEEK) == 1) {
dayForWeek = 7;
} else {
dayForWeek = c.get(Calendar.DAY_OF_WEEK) - 1;
}
} catch (ParseException e) {
e.printStackTrace();
}
return dayForWeek;
}
/**
* @param dt
* @return 当前日期是星期几
*/
public static String getWeekOfDate(Date dt) {
String[] weekDays = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
Calendar cal = Calendar.getInstance();
cal.setTime(dt);
int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
if (w < 0)
w = 0;
return weekDays[w];
}
/**
* 根据日期获得星期
*
* @param date
* @return
*/
public static String getWeekOfDate(String date) {
if (StringUtils.isEmpty(date)) {
return "";
}
String[] weekDaysName = {"周日", "周一", "周二", "周三", "周四", "周五", "周六"};
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt1;
try {
dt1 = df.parse(date);
Calendar calendar = Calendar.getInstance();
calendar.setTime(dt1);
int intWeek = calendar.get(Calendar.DAY_OF_WEEK) - 1;
return weekDaysName[intWeek];
} catch (ParseException e) {
e.printStackTrace();
}
return "";
}
/**
* 获取当前时间为第几周
* @param date
* @return
*/
public static int getWeekDate(Date date){
int weekOfYear;
try {
Calendar calendar = Calendar.getInstance();
calendar.setFirstDayOfWeek(Calendar.MONDAY);
calendar.setTime(date);
weekOfYear = calendar.get(Calendar.WEEK_OF_YEAR);
}catch(Exception e) {
e.printStackTrace();
return 0;
}
return weekOfYear;
}
/**
* 计算两个时间相差几个月
* @param start
* @param end
* @return
*/
public static int getDifferentMonths(Date start, Date end) {
if (start.after(end)) {
Date t = start;
start = end;
end = t;
}
Calendar startCalendar = Calendar.getInstance();
startCalendar.setTime(start);
Calendar endCalendar = Calendar.getInstance();
endCalendar.setTime(end);
Calendar temp = Calendar.getInstance();
temp.setTime(end);
temp.add(Calendar.DATE, 1);
int year = endCalendar.get(Calendar.YEAR) - startCalendar.get(Calendar.YEAR);
int month = endCalendar.get(Calendar.MONTH) - startCalendar.get(Calendar.MONTH);
if ((startCalendar.get(Calendar.DATE) == 1)&& (temp.get(Calendar.DATE) == 1)) {
return year * 12 + month + 1;
} else if ((startCalendar.get(Calendar.DATE) != 1) && (temp.get(Calendar.DATE) == 1)) {
return year * 12 + month;
} else if ((startCalendar.get(Calendar.DATE) == 1) && (temp.get(Calendar.DATE) != 1)) {
return year * 12 + month;
} else {
return (year * 12 + month - 1) < 0 ? 0 : (year * 12 + month);
}
}
/**
* 获取当前时间的前后月
*
* @param date 时间
* @param type 类型：1=天，2=月，3=年
* @param val 前后时间值
* @return
*/
public static Date getNowAroundTime(Date date,String type,int val) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
switch (type){
case "1":
calendar.add(calendar.DATE, val); //设置为前几天
break;
case "2":
calendar.add(calendar.MONTH, val); //设置为前几月
break;
case "3":
calendar.add(calendar.YEAR, val); //设置为前几年
break;
}
Date date1 = calendar.getTime();
//String defaultStartDate = sdf1.format(date1); //格式化前month月的时间
return date1;
}
/**
* 获取当前时间一周开始时间和结束时间
* @return
*/
public static long[] getCurrentWeekTimeFrame() {
Calendar calendar = Calendar.getInstance();
calendar.setTimeZone(TimeZone.getTimeZone("GMT+8"));
//start of the week
if (calendar.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) {
calendar.add(Calendar.DAY_OF_YEAR,-1);
}
calendar.add(Calendar.DAY_OF_WEEK, -(calendar.get(Calendar.DAY_OF_WEEK) - 2));
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
long startTime = calendar.getTimeInMillis();
//end of the week
calendar.add(Calendar.DAY_OF_WEEK, 6);
calendar.set(Calendar.HOUR_OF_DAY, 23);
calendar.set(Calendar.MINUTE, 59);
calendar.set(Calendar.SECOND, 59);
calendar.set(Calendar.MILLISECOND, 999);
long endTime = calendar.getTimeInMillis();
return new long[]{startTime, endTime};
}
}
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