import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class DateUtil {
public static Date getNow() {
Calendar cal = Calendar.getInstance();
return cal.getTime();
}
public static Date getNowEnd() {
Calendar cal = Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY, 23);
cal.set(Calendar.MINUTE, 59);
cal.set(Calendar.SECOND, 59);
cal.set(Calendar.MILLISECOND, 999);
return cal.getTime();
}
public static Date getTodayBegin() {
Calendar cal = Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTime();
}
/*
public static Date setDateBegin(String dateStr) throws Exception{
Calendar cal = Calendar.getInstance();
cal.setTime(DateUtil.parseDate(dateStr,"yyyy-MM-dd"));
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTime();
}
public static Date setDateEnd(String dateStr) throws Exception{
Calendar cal = Calendar.getInstance();
cal.setTime(DateUtil.parseDate(dateStr,"yyyy-MM-dd"));
cal.set(Calendar.HOUR_OF_DAY, 23);
cal.set(Calendar.MINUTE, 59);
cal.set(Calendar.SECOND, 59);
cal.set(Calendar.MILLISECOND, 999);
return cal.getTime();
}*/
public static Date getYesterdayBegin() {
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DATE, -1);
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTime();
}
public static Date getYesterdayEnd() {
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DATE, -1);
cal.set(Calendar.HOUR_OF_DAY, 23);
cal.set(Calendar.MINUTE, 59);
cal.set(Calendar.SECOND, 59);
cal.set(Calendar.MILLISECOND, 999);
return cal.getTime();
}
public static Date getThisweekBegin() {
Calendar cal = Calendar.getInstance();
if (cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) {
cal.add(Calendar.DATE, -1);
}
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTime();
}
public static Date getThisweekEnd() {
Calendar cal = Calendar.getInstance();
if (cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) {
cal.add(Calendar.DATE, -1);
}
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
cal.set(Calendar.HOUR_OF_DAY, 23);
cal.set(Calendar.MINUTE, 59);
cal.set(Calendar.SECOND, 59);
cal.set(Calendar.MILLISECOND, 999);
return cal.getTime();
}
public static Date getLastweekBegin() {
Calendar cal = Calendar.getInstance();
cal.setTime(getThisweekBegin());
cal.add(Calendar.DATE, -7);
return cal.getTime();
}
public static Date getLastweekEnd() {
Calendar cal = Calendar.getInstance();
cal.setTime(getThisweekEnd());
cal.add(Calendar.DATE, -7);
return cal.getTime();
}
public static Date getThismonthBegin() {
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.DAY_OF_MONTH, 1);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
return calendar.getTime();
}
public static Date getThismonthEnd() {
Calendar cal = Calendar.getInstance();
cal.setTime(getThismonthBegin());
//将当前月加1；
cal.add(Calendar.MONTH, 1);
//在当前月的下一月基础上减去1毫秒
cal.add(Calendar.MILLISECOND, -1);
return cal.getTime();
}
public static Date getLastmonthBegin() {
Calendar cal = Calendar.getInstance();
cal.setTime(getThismonthBegin());
//将当前月-1；
cal.add(Calendar.MONTH, -1);
return cal.getTime();
}
public static Date getLastmonthEnd() {
Calendar cal = Calendar.getInstance();
cal.setTime(getThismonthEnd());
//将当前月-1；
cal.add(Calendar.MONTH, -1);
return cal.getTime();
}
public static Date getCurrentQuarterStartTime() {
Calendar c = Calendar.getInstance();
int currentMonth = c.get(Calendar.MONTH) + 1;
SimpleDateFormat longSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
SimpleDateFormat shortSdf = new SimpleDateFormat("yyyy-MM-dd");
Date now = null;
try {
if (currentMonth >= 1 && currentMonth <= 3)
c.set(Calendar.MONTH, 0);
else if (currentMonth >= 4 && currentMonth <= 6)
c.set(Calendar.MONTH, 3);
else if (currentMonth >= 7 && currentMonth <= 9)
c.set(Calendar.MONTH, 4);
else if (currentMonth >= 10 && currentMonth <= 12)
c.set(Calendar.MONTH, 9);
c.set(Calendar.DATE, 1);
now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00");
} catch (Exception e) {
e.printStackTrace();
}
return now;
}
public static Date getCurrentQuarterEndTime() {
Calendar cal = Calendar.getInstance();
cal.setTime(getCurrentQuarterStartTime());
cal.add(Calendar.MONTH, 3);
return cal.getTime();
}
public static Date getYearFirst(int year) {
Calendar calendar = Calendar.getInstance();
calendar.clear();
calendar.set(Calendar.YEAR, year);
Date currYearFirst = calendar.getTime();
return currYearFirst;
}
public static Date getCurrYearFirst() {
Calendar currCal = Calendar.getInstance();
int currentYear = currCal.get(Calendar.YEAR);
return getYearFirst(currentYear);
}
public static Date getCurrYearLast() {
Calendar currCal = Calendar.getInstance();
int currentYear = currCal.get(Calendar.YEAR);
return getYearLast(currentYear);
}
public static Date getYearLast(int year){
Calendar calendar = Calendar.getInstance();
calendar.clear();
calendar.set(Calendar.YEAR,year);
calendar.roll(Calendar.DAY_OF_YEAR, -1);
Date currYearLast = calendar.getTime();
return currYearLast;
}
public static Date getDayBefore(int day) {
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DATE, -day + 1);
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTime();
}
public static Date getDayAfter(int day) {
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DATE, day);
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTime();
}
public static Date getLastmonth() {
Calendar cal = Calendar.getInstance();
//将当前月-1；
cal.add(Calendar.MONTH, -1);
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTime();
}
public static Date transtoEnd(Date date) {
if (date == null) return date;
Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.set(Calendar.HOUR_OF_DAY, 23);
cal.set(Calendar.MINUTE, 59);
cal.set(Calendar.SECOND, 59);
cal.set(Calendar.MILLISECOND, 999);
return cal.getTime();
}
public static Date getBeginOfDate(Date date) {
if (date == null) return date;
Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTime();
}
}
