public class Test {@org.junit.Testpublic void testDay(){SimpleDateFormat sm = new SimpleDateFormat("yyyy-MM-dd");//获取指定年月第一天Calendar calstar= Calendar.getInstance();calstar.setTime(new Date());calstar.set(Calendar.YEAR, calstar.get(Calendar.YEAR));calstar.set(Calendar.MONTH, 0);calstar.set(Calendar.DAY_OF_MONTH, 1);System.out.println("指定年第一天:"+DateUtil.beginOfDay(calstar.getTime()));calstar.set(Calendar.YEAR, calstar.get(Calendar.YEAR)+1);calstar.set(Calendar.DAY_OF_MONTH, 0);//最后一天System.out.println("指定年最后一天:"+DateUtil.endOfDay(calstar.getTime()));Calendar sn = Calendar.getInstance();sn.setTime(new Date());sn.set(Calendar.YEAR,sn.get(Calendar.YEAR)-2);sn.set(Calendar.MONTH,0);sn.set(Calendar.DAY_OF_MONTH,1);System.out.println("三年开始"+DateUtil.beginOfDay(sn.getTime()));sn.set(Calendar.YEAR,sn.get(Calendar.YEAR)+2);sn.set(Calendar.MONTH,12);sn.set(Calendar.DAY_OF_MONTH,0);System.out.println("三年结束"+DateUtil.endOfDay (sn.getTime()));Calendar zz = Calendar.getInstance();zz.setTime(new Date());zz.set(Calendar.DAY_OF_WEEK,2);zz.set(Calendar.WEEK_OF_YEAR,8);System.out.println("第---周---"+DateUtil.beginOfDay(zz.getTime()));Calendar c = Calendar.getInstance();c.setTime(new Date());c.set(Calendar.MONTH,c.get(Calendar.MONTH) - 1);System.out.println("上个月是---："+DateUtil.beginOfDay(c.getTime()));//获取上个月的第一天Calendar cal = Calendar.getInstance();//上个月cal.add(Calendar.MONTH, -1);//设置为1号,当前日期既为本月第一天cal.set(Calendar.DAY_OF_MONTH,1);System.out.println("上月第一天:"+DateUtil.beginOfDay(cal.getTime()));//设置上个月最后一天cal.set(Calendar.DAY_OF_MONTH,cal.getActualMaximum(Calendar.DAY_OF_MONTH));System.out.println("上月最后一天:"+DateUtil.endOfDay(cal.getTime()));//获取当前月第一天：Calendar calstr = Calendar.getInstance();//本月calstr.add(Calendar.MONTH, 0);//设置为1号为本月第一天calstr.set(Calendar.DAY_OF_MONTH,1);System.out.println("当月第一天:"+ String.valueOf(DateUtil.beginOfDay(calstr.getTime())));//设置当月为最后一天calstr.set(Calendar.DAY_OF_MONTH,calstr.getActualMaximum(Calendar.DAY_OF_MONTH));System.out.println("当月最后一天:"+DateUtil.endOfDay(calstr.getTime()));Calendar calasts = Calendar.getInstance();//calasts.setTime(new Date());calasts.add(calasts.DATE,1);System.out.println("当前时间加1:"+sm.format(calasts.getTime()));calasts.add(calasts.DATE,-3);System.out.println("当前时间-3:"+sm.format(calasts.getTime()));System.out.println("获得上周第一天:"+getWeekStartDay());System.out.println("获得上周最后一天:"+getWeekEndDay());System.out.println("获得本周第一天:"+getCurrentWeekStartDay());System.out.println("获得本周最后一天 :"+getCurrentWeekEndDay());System.out.println("三天开始："+getNeverThreeStartTime());System.out.println("三天结束："+getNeverThreeEndTime());System.out.println("上个月三天开始："+getNeverThreeStartTimes());System.out.println("上个月三天结束："+getNeverThreeEndTimes());System.out.println("七天开始："+getNeverSevenStartTime());System.out.println("七天结束："+getNeverSevenEndTime());System.out.println("上个月7天开始："+getNeverSevenStartTimes());System.out.println("上个月7天结束："+getNeverSevenEndTimes());System.out.println("今天开始时间:"+getTodayStartTime());System.out.println("今天结束时间:"+getTodayEndTime());System.out.println("昨天开始时间:"+getYesterdayStartTime());System.out.println("昨天结束时间:"+getYesterdayEndTime());System.out.println("季度开始："+getCurrentQuarterStartTime());System.out.println("季度结束："+getCurrentQuarterEndTime());System.out.println("上个季度开始："+getCurrentQuarterStartTimes());System.out.println("上个季度结束："+getCurrentQuarterEndTimes());}/*** 获得上周第一天 周日 00:00:00*/public static Date getWeekStartDay() {Calendar calendar = Calendar.getInstance();calendar.set(Calendar.DAY_OF_WEEK, 1);calendar.add(Calendar.DATE, -7);return DateUtil.beginOfDay(calendar.getTime());}/*** 获得上周最后一天 周六 23:59:59*/public static Date getWeekEndDay() {Calendar calendar = Calendar.getInstance();calendar.setTime(getWeekStartDay());calendar.add(Calendar.DATE, 6);return DateUtil.endOfDay(calendar.getTime());}/*** 获得本周第一天 周日 00:00:00*/public static Date getCurrentWeekStartDay() {Calendar calendar = Calendar.getInstance();calendar.set(Calendar.DAY_OF_WEEK, 2);return DateUtil.beginOfDay(calendar.getTime());}/*** 获得本周最后一天 周六 23:59:59*/public static Date getCurrentWeekEndDay() {Calendar cal = Calendar.getInstance();cal.setTime(getCurrentWeekStartDay());cal.add(Calendar.DATE, 6);return DateUtil.endOfDay(cal.getTime());}/*** 近七天开始时间** @return*/public static Date getNeverSevenStartTime() {Calendar calendar = Calendar.getInstance();calendar.setTime(new Date());calendar.add(Calendar.DATE, -6);return DateUtil.beginOfDay(calendar.getTime());}/*** 近七天结束时间** @return*/public static Date getNeverSevenEndTime() {Calendar calendar = Calendar.getInstance();calendar.setTime(getNeverSevenStartTime());calendar.add(Calendar.DATE, 6);return DateUtil.endOfDay(calendar.getTime());}/*** 近三天开始时间** @return*/public static Date getNeverThreeStartTime() {Calendar calendar = Calendar.getInstance();calendar.setTime(new Date());calendar.add(Calendar.DATE, -2);return DateUtil.beginOfDay(calendar.getTime());}/*** 近三天结束时间** @return*/public static Date getNeverThreeEndTime() {Calendar calendar = Calendar.getInstance();calendar.setTime(getNeverThreeStartTime());calendar.add(Calendar.DATE, 2);return DateUtil.endOfDay(calendar.getTime());}/*** 上月近三天开始时间** @return*/public static Date getNeverThreeStartTimes() {Calendar calendar = Calendar.getInstance();calendar.setTime(new Date());calendar.add(Calendar.DATE, -2);calendar.set(Calendar.MONTH,calendar.get(Calendar.MONTH)-1);return DateUtil.beginOfDay(calendar.getTime());}/*** 上月近三天结束时间** @return*/public static Date getNeverThreeEndTimes() {Calendar calendar = Calendar.getInstance();calendar.setTime(getNeverThreeStartTimes());calendar.add(Calendar.DATE, 2);return DateUtil.endOfDay(calendar.getTime());}/*** 上月近七天开始时间** @return*/public static Date getNeverSevenStartTimes() {Calendar calendar = Calendar.getInstance();calendar.setTime(new Date());calendar.set(Calendar.MONTH,calendar.get(Calendar.MONTH)-1);calendar.add(Calendar.DATE, -6);return DateUtil.beginOfDay(calendar.getTime());}/*** 上月近七天结束时间** @return*/public static Date getNeverSevenEndTimes() {Calendar calendar = Calendar.getInstance();calendar.setTime(getNeverSevenStartTimes());calendar.add(Calendar.DATE, 6);return DateUtil.endOfDay(calendar.getTime());}/*** 昨天开始时间** @return*/public static Date getYesterdayStartTime() {Calendar calendar = Calendar.getInstance();calendar.setTime(new Date());calendar.add(Calendar.DATE, -1);return DateUtil.beginOfDay(calendar.getTime());}/*** 昨天结束时间** @return*/public static Date getYesterdayEndTime() {return DateUtil.endOfDay(getYesterdayStartTime());}/*** 今天开始时间** @return*/public static Date getTodayStartTime() {return DateUtil.beginOfDay(new Date());}/*** 今天结束时间** @return*/public static Date getTodayEndTime() {return DateUtil.endOfDay(new Date());}/*** 当前季度的结束时间，** @return*/public static Date getCurrentQuarterEndTime() {Calendar cal = Calendar.getInstance();cal.setTime(getCurrentQuarterStartTime());cal.add(Calendar.MONTH, 3);cal.set(Calendar.DATE,0);return DateUtil.endOfDay(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 DateUtil.beginOfDay(now);}/*** 当前季度的结束时间，即上个季度** @return*/public static Date getCurrentQuarterEndTimes() {Calendar cal = Calendar.getInstance();cal.setTime(getCurrentQuarterStartTimes());cal.add(Calendar.MONTH, 3);cal.set(Calendar.DATE,0);return DateUtil.endOfDay(cal.getTime());}public static Date getCurrentQuarterStartTimes() {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);c.set(Calendar.MONTH,c.get(Calendar.MONTH)-3);now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00");} catch (Exception e) {e.printStackTrace();}return DateUtil.beginOfDay(now);}}
