日期工具类DateUtisl-获取(日、周、月、季、年）起止时间

日期工具类，可以对日期进行格式化，获取日、周、月、季、年的起止时间 import java.sql.Timestamp; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; public class DateUtils { public static String[] getBegainAndEndTime(Date date, String mode) { SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date[] dates = getBegainAndEndDate(date, mode); return new String[]{format.format(dates[0]), format.format(dates[1])}; } public static Date[] getBegainAndEndDate(Date date, String mode) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); Date begin = new Date(); Date end = new Date(); if (mode == null || mode.equalsIgnoreCase("日") || mode.equalsIgnoreCase("day")) { calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); calendar.set(Calendar.MILLISECOND, 0); begin = calendar.getTime(); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MILLISECOND, 999); end = calendar.getTime(); } else if (mode.equalsIgnoreCase("周") || mode.equalsIgnoreCase("week")) { calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); calendar.set(Calendar.MILLISECOND, 0); begin = calendar.getTime(); calendar.set(Calendar.DAY_OF_WEEK, Calendar.SATURDAY); calendar.add(Calendar.DAY_OF_WEEK, 1); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MILLISECOND, 999); end = calendar.getTime(); } else if (mode.equalsIgnoreCase("月") || mode.equalsIgnoreCase("month") || mode.equalsIgnoreCase("0")) { 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); begin = calendar.getTime(); calendar.set(Calendar.DAY_OF_MONTH, calendar .getActualMaximum(Calendar.DAY_OF_MONTH)); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MILLISECOND, 999); end = calendar.getTime(); } else if (mode.equalsIgnoreCase("季") || mode.equalsIgnoreCase("season")) { int month = calendar.get(Calendar.MONTH) + 1; if(month % 3 == 0){//季度结束月 6(3,4,5) calendar.set(Calendar.MONTH, month - 3); 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); begin = calendar.getTime(); calendar.set(Calendar.MONTH, month - 1); calendar.set(Calendar.DAY_OF_MONTH, calendar .getActualMaximum(Calendar.DAY_OF_MONTH)); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MILLISECOND, 999); end = calendar.getTime(); }else if(month % 3 == 1){//季度起始月 4(3,4,5) calendar.set(Calendar.MONTH, month - 1); 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); begin = calendar.getTime(); calendar.set(Calendar.MONTH, month + 1); calendar.set(Calendar.DAY_OF_MONTH, calendar .getActualMaximum(Calendar.DAY_OF_MONTH)); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MILLISECOND, 999); end = calendar.getTime(); }else if(month % 3 == 2){//季度中间月 5(3,4,5) calendar.set(Calendar.MONTH, month - 2); 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); begin = calendar.getTime(); calendar.set(Calendar.MONTH, month); calendar.set(Calendar.DAY_OF_MONTH, calendar .getActualMaximum(Calendar.DAY_OF_MONTH)); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MILLISECOND, 999); end = calendar.getTime(); } } else if (mode.equalsIgnoreCase("年") || mode.equalsIgnoreCase("year") || mode.equalsIgnoreCase("1")) { calendar.set(Calendar.DAY_OF_YEAR, 1); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); calendar.set(Calendar.MILLISECOND, 0); begin = calendar.getTime(); calendar.set(Calendar.DAY_OF_YEAR, calendar .getActualMaximum(Calendar.DAY_OF_YEAR)); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MILLISECOND, 999); end = calendar.getTime(); } return new Date[] {begin, end}; } public static String format(Date date) { String result = ""; SimpleDateFormat format = new SimpleDateFormat("yyyy年MM月dd日"); result = format.format(date); return result; } public static String format(Date date, String pattern) { String result = ""; if(null == pattern){ pattern = "yyyy-MM-dd HH:mm:ss"; } if(date == null){ date = new Date(); date.setTime(0); } SimpleDateFormat format = new SimpleDateFormat(pattern); result = format.format(date); return result; } public static Date parse(String str) { Date date = null; SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd"); try { date = format.parse(str); } catch (ParseException e) { e.printStackTrace(); } return date; } public static String format(String str) { Date date = parse(str); String result = ""; result = format(date); return result; } public static Date changeDate(Date date) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); String newDateStr = sdf.format(date) + " 17:00:00"; return getStringToDate(newDateStr); } public static String parse(Date date) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); String newDateStr = sdf.format(date); return sdf.format(date); } // public static String changeDate(Date date) { // SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); // String newDateStr = sdf.format(date)+" 17:00:00"; // return newDateStr; // } public static Date getStringToDate(String s) { Timestamp ts = Timestamp.valueOf(s); return ts; } public static void main(String[] args) { String[] dates = getBegainAndEndTime(new Date(), "month"); System.out.println(dates[0] + " -- " + dates[1]); System.out.println(format(null, null)); } }