package com.accp.office.util; import java.text.DateFormat; import java.text.ParsePosition; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; public class TimeUtil { //用来全局控制 上一周,本周,下一周的周数变化 private static int weeks = 0; private static int MaxDate;//一月最大天数 private static int MaxYear;//一年最大天数 static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); /** * 获取每个月的最后一天不带时分秒 * @author 吕兵阳 * @return */ public static Date getLastDayOfMonth(Calendar cal){ String lastDay = cal.get(Calendar.YEAR)+"-"+(cal.get(Calendar.MONTH)+1)+"-"+cal.getActualMaximum(Calendar.DAY_OF_MONTH); try { return sdf.parse(lastDay); } catch (Exception e) { e.printStackTrace(); System.out.println("获取当前时间失败!"); return null; } } /** * 获取一个月的第一天不带时分秒 * @author 吕兵阳 * @param cal * @return */ public static Date getFirstDayOfMonth(Calendar cal) { String firstDay = cal.get(Calendar.YEAR)+"-"+(cal.get(Calendar.MONTH)+1)+"-"+01; try { return sdf.parse(firstDay); } catch (Exception e) { e.printStackTrace(); System.out.println("获取当前时间失败!"); return null; } } /** * 获取今天不带时分秒 * @author 吕兵阳 * @param cal * @return */ public static Date getTime(Calendar cal){ String now = cal.get(Calendar.YEAR)+"-"+(cal.get(Calendar.MONTH)+1)+"-"+cal.get(Calendar.DAY_OF_MONTH); try { return sdf.parse(now); } catch (Exception e) { e.printStackTrace(); System.out.println("获取时间失败!"); return null; } } /** * 获取明天不带时分秒 * @author 吕兵阳 * @param cal * @return */ public static Date getTomorrow(Calendar cal){ String tomorrow = cal.get(Calendar.YEAR)+"-"+(cal.get(Calendar.MONTH)+1)+"-"+(cal.get(Calendar.DAY_OF_MONTH)+2); try { return sdf.parse(tomorrow); } catch (Exception e) { e.printStackTrace(); System.out.println("获取时间出错!"); return null; } } /** * 将一个字符串转换为一个日期对象 * @description * @author 吕兵阳 * @param strDate * @return */ public static Date strToDate(String strDate) { SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd"); ParsePosition pos = new ParsePosition(0); Date strtodate = formatter.parse(strDate, pos); return strtodate; } /** * 获取两个时间相差的天数 * @description * @author 吕兵阳 * @param sj1 时间1 * @param sj2 时间2 * @return */ public static long getDays(String date1, String date2) { if (date1 == null || date1.equals("")) return 0; if (date2 == null || date2.equals("")) return 0; // 转换为标准时间 SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd"); java.util.Date date = null; java.util.Date mydate = null; try { date = myFormatter.parse(date1); mydate = myFormatter.parse(date2); } catch (Exception e) { } long day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000); return day; } /** * 获取当月最后一天,返回日期的字符串 * @description * @author 吕兵阳 * @return */ public static String getLastDayofMonth(){ String str = ""; SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); Calendar lastDate = Calendar.getInstance(); lastDate.set(Calendar.DATE,1);//设为当前月的1号 lastDate.add(Calendar.MONTH,1);//加一个月,变为下月的1号 lastDate.add(Calendar.DATE,-1);//减去一天,变为当月最后一天 str=sdf.format(lastDate.getTime()); return str; } /** * 获取上个月第一天,返回标准的日期字符串 * @description * @author 吕兵阳 * @return */ public static String getPreviousMonthFirst(){ String str = ""; SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); Calendar lastDate = Calendar.getInstance(); lastDate.set(Calendar.DATE,1);//设为当前月的1号 lastDate.add(Calendar.MONTH,-1);//减一个月,变为下月的1号 //lastDate.add(Calendar.DATE,-1);//减去一天,变为当月最后一天 str=sdf.format(lastDate.getTime()); return str; } /** * 获取本周周日的日期,返回标准的日期字符串 * @description * @author 吕兵阳 * @return */ public static String getCurrentWeekday() { weeks = 0; int mondayPlus = getMondayPlus(); GregorianCalendar currentDate = new GregorianCalendar(); currentDate.add(GregorianCalendar.DATE, mondayPlus+6); Date monday = currentDate.getTime(); DateFormat df = DateFormat.getDateInstance(); String preMonday = df.format(monday); return preMonday; } /** * 获得当前日期与本周日相差的天数 * @description * @author 吕兵阳 * @return */ private static int getMondayPlus() { Calendar cd = Calendar.getInstance(); // 获得今天是一周的第几天,星期日是第一天,星期二是第二天...... int dayOfWeek = cd.get(Calendar.DAY_OF_WEEK)-1; //因为按中国礼拜一作为第一天所以这里减1 if (dayOfWeek == 1) { return 0; } else { return 1 - dayOfWeek; } } /** * 获得本周一的日期 * @description * @author 吕兵阳 * @return */ public static String getMondayOFWeek(){ weeks = 0; int mondayPlus = getMondayPlus(); GregorianCalendar currentDate = new GregorianCalendar(); currentDate.add(GregorianCalendar.DATE, mondayPlus); Date monday = currentDate.getTime(); DateFormat df = DateFormat.getDateInstance(); String preMonday = df.format(monday); return preMonday; } /** * 获得相应周的周六的日期 * @description * @author 吕兵阳 * @return */ public static String getSaturday() { int mondayPlus = getMondayPlus(); GregorianCalendar currentDate = new GregorianCalendar(); currentDate.add(GregorianCalendar.DATE, mondayPlus + 7 * weeks + 5); Date monday = currentDate.getTime(); DateFormat df = DateFormat.getDateInstance(); String preMonday = df.format(monday); return preMonday; } /** * 获得上周星期日的日期 * @description * @author 吕兵阳 * @return */ public static String getPreviousWeekSunday() { weeks=0; weeks--; int mondayPlus =getMondayPlus(); GregorianCalendar currentDate = new GregorianCalendar(); currentDate.add(GregorianCalendar.DATE, mondayPlus+weeks); Date monday = currentDate.getTime(); DateFormat df = DateFormat.getDateInstance(); String preMonday = df.format(monday); return preMonday; } /** * 获得上周星期一的日期 * @description * @author 吕兵阳 * @return */ public static String getPreviousWeekday() { weeks--; int mondayPlus =getMondayPlus(); GregorianCalendar currentDate = new GregorianCalendar(); currentDate.add(GregorianCalendar.DATE, mondayPlus + 7 * weeks); Date monday = currentDate.getTime(); DateFormat df = DateFormat.getDateInstance(); String preMonday = df.format(monday); return preMonday; } /** * 获得下周星期一的日期 * @description * @author 吕兵阳 * @return */ public static String getNextMonday() { weeks++; int mondayPlus = getMondayPlus(); GregorianCalendar currentDate = new GregorianCalendar(); currentDate.add(GregorianCalendar.DATE, mondayPlus + 7); Date monday = currentDate.getTime(); DateFormat df = DateFormat.getDateInstance(); String preMonday = df.format(monday); return preMonday; } /** * 获得下周星期日的日期 * @description * @author 吕兵阳 * @return */ public static String getNextSunday() { int mondayPlus =getMondayPlus(); GregorianCalendar currentDate = new GregorianCalendar(); currentDate.add(GregorianCalendar.DATE, mondayPlus + 7+6); Date monday = currentDate.getTime(); DateFormat df = DateFormat.getDateInstance(); String preMonday = df.format(monday); return preMonday; } /** * 月份的计算 * @description * @author 吕兵阳 * @return */ private static int getMonthPlus(){ Calendar cd = Calendar.getInstance(); int monthOfNumber = cd.get(Calendar.DAY_OF_MONTH); cd.set(Calendar.DATE, 1);//把日期设置为当月第一天 cd.roll(Calendar.DATE, -1);//日期回滚一天,也就是最后一天 MaxDate=cd.get(Calendar.DATE); if(monthOfNumber == 1){ return -MaxDate; }else{ return 1-monthOfNumber; } } /** * 获得上月最后一天的日期 * @description * @author 吕兵阳 * @return */ public static String getPreviousMonthEnd(){ String str = ""; SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); Calendar lastDate = Calendar.getInstance(); lastDate.add(Calendar.MONTH,-1);//减一个月 lastDate.set(Calendar.DATE, 1);//把日期设置为当月第一天 lastDate.roll(Calendar.DATE, -1);//日期回滚一天,也就是本月最后一天 str=sdf.format(lastDate.getTime()); return str; } /** * 获得下个月第一天的日期 * @description * @author 吕兵阳 * @return */ public static String getNextMonthFirst(){ String str = ""; SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); Calendar lastDate = Calendar.getInstance(); lastDate.add(Calendar.MONTH,1);//减一个月 lastDate.set(Calendar.DATE, 1);//把日期设置为当月第一天 str=sdf.format(lastDate.getTime()); return str; } /** * 获得下个月最后一天的日期 * @description * @author 吕兵阳 * @return */ public static String getNextMonthEnd(){ String str = ""; SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); Calendar lastDate = Calendar.getInstance(); lastDate.add(Calendar.MONTH,1);//加一个月 lastDate.set(Calendar.DATE, 1);//把日期设置为当月第一天 lastDate.roll(Calendar.DATE, -1);//日期回滚一天,也就是本月最后一天 str=sdf.format(lastDate.getTime()); return str; } /** * 获得明年最后一天的日期 * @description * @author 吕兵阳 * @return */ public String getNextYearEnd(){ String str = ""; SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); Calendar lastDate = Calendar.getInstance(); lastDate.add(Calendar.YEAR,1);//加一个年 lastDate.set(Calendar.DAY_OF_YEAR, 1); lastDate.roll(Calendar.DAY_OF_YEAR, -1); str=sdf.format(lastDate.getTime()); return str; } /** * 获得明年第一天的日期 * @description * @author 吕兵阳 * @return */ public String getNextYearFirst(){ String str = ""; SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); Calendar lastDate = Calendar.getInstance(); lastDate.add(Calendar.YEAR,1);//加一个年 lastDate.set(Calendar.DAY_OF_YEAR, 1); str=sdf.format(lastDate.getTime()); return str; } /** * 获得本年有多少天 * @description * @author 吕兵阳 * @return */ public static int getMaxYear(){ Calendar cd = Calendar.getInstance(); cd.set(Calendar.DAY_OF_YEAR,1);//把日期设为当年第一天 cd.roll(Calendar.DAY_OF_YEAR,-1);//把日期回滚一天。 int MaxYear = cd.get(Calendar.DAY_OF_YEAR); return MaxYear; } public static int getYearPlus(){ Calendar cd = Calendar.getInstance(); int yearOfNumber = cd.get(Calendar.DAY_OF_YEAR);//获得当天是一年中的第几天 cd.set(Calendar.DAY_OF_YEAR,1);//把日期设为当年第一天 cd.roll(Calendar.DAY_OF_YEAR,-1);//把日期回滚一天。 int MaxYear = cd.get(Calendar.DAY_OF_YEAR); if(yearOfNumber == 1){ return -MaxYear; }else{ return 1-yearOfNumber; } } /** * 获得本年第一天的日期 * @description * @author 吕兵阳 * @return */ public static String getCurrentYearFirst(){ int yearPlus = getYearPlus(); GregorianCalendar currentDate = new GregorianCalendar(); currentDate.add(GregorianCalendar.DATE,yearPlus); Date yearDay = currentDate.getTime(); DateFormat df = DateFormat.getDateInstance(); String preYearDay = df.format(yearDay); return preYearDay; } /** * 获得本年最后一天的日期 * @description * @author 吕兵阳 * @return */ public static String getCurrentYearEnd(){ Date date = new Date(); SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy");//可以方便地修改日期格式 String years = dateFormat.format(date); return years+"-12-31"; } /** * 获得上年第一天的日期 * @description * @author 吕兵阳 * @return */ public static String getPreviousYearFirst(){ Date date = new Date(); SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy");//可以方便地修改日期格式 String years = dateFormat.format(date); int years_value = Integer.parseInt(years); years_value--; return years_value+"-1-1"; } /** * 获得上年最后一天的日期 * @description * @author 吕兵阳 * @return */ public static String getPreviousYearEnd(){ weeks--; int yearPlus =getYearPlus(); GregorianCalendar currentDate = new GregorianCalendar(); currentDate.add(GregorianCalendar.DATE,yearPlus+MaxYear*weeks+(MaxYear-1)); Date yearDay = currentDate.getTime(); DateFormat df = DateFormat.getDateInstance(); String preYearDay = df.format(yearDay); getThisSeasonTime(11); return preYearDay; } /** * 获得季度的开始日期和结束日期 * @description * @author 吕兵阳 * @param month * @return */ public static String getThisSeasonTime(int month){ int array[][] = {{1,2,3},{4,5,6},{7,8,9},{10,11,12}}; int season = 1; if(month>=1&&month<=3){ season = 1; } if(month>=4&&month<=6){ season = 2; } if(month>=7&&month<=9){ season = 3; } if(month>=10&&month<=12){ season = 4; } int start_month = array[season-1][0]; int end_month = array[season-1][2]; Date date = new Date(); SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy");//可以方便地修改日期格式 String years = dateFormat.format(date); int years_value = Integer.parseInt(years); int start_days =1;//years+"-"+String.valueOf(start_month)+"-1";//getLastDayOfMonth(years_value,start_month); int end_days = getLastDayOfMonth(years_value,end_month); String seasonDate = years_value+"-"+start_month+"-"+start_days+";"+years_value+"-"+end_month+"-"+end_days; return seasonDate; } private static int getLastDayOfMonth(int year, int month) { if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) { return 31; } if (month == 4 || month == 6 || month == 9 || month == 11) { return 30; } if (month == 2) { if (isLeapYear(year)) { return 29; } else { return 28; } } return 0; } public static boolean isLeapYear(int year) { return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0); } } @Test public void test4(){ logger.info("两个时间相差几天:"+TimeUtil.getDays("2013-10-10", "2013-10-09")); logger.info("你输入的字符串转换为日期后是:"+TimeUtil.strToDate("2013-12-6")); logger.info("当月最后一天:"+TimeUtil.getLastDayofMonth()); logger.info("上个月第一天:"+TimeUtil.getPreviousMonthFirst()); logger.info("本周周日的日期是:"+TimeUtil.getCurrentWeekday()); logger.info("本周一的日期:"+TimeUtil.getMondayOFWeek()); logger.info("获得相应周的周六的日期:"+TimeUtil.getSaturday()); logger.info("获得上周星期日的日期:"+TimeUtil.getPreviousWeekSunday()); logger.info("获得上周星期一的日期:"+TimeUtil.getPreviousWeekday()); logger.info("获得下周星期一的日期:"+TimeUtil.getNextMonday()); logger.info("获得下周星期日的日期:"+TimeUtil.getNextSunday()); logger.info("本年有:"+TimeUtil.getMaxYear()+"天!"); logger.info("季度的开始和结束:"+TimeUtil.getThisSeasonTime(1)); }