JAVA获取目标日期对应的年，月，季度，周时间类
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好记性不如烂笔头
public class TimeUtil { /** * 获取 当前年、半年、季度、月、日、小时 开始结束时间 */ private final static SimpleDateFormat shortSdf = new SimpleDateFormat("yyyy-MM-dd"); private final static SimpleDateFormat longHourSdf = new SimpleDateFormat("yyyy-MM-dd HH"); private final static SimpleDateFormat longSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); private final static SimpleDateFormat _shortSdf = new SimpleDateFormat("yyyyMMdd"); /** * 获得本周的第一天，周一 * * @return */ public static Date getCurrentWeekDayStartTime() { Calendar c = Calendar.getInstance(); try { int weekday = c.get(Calendar.DAY_OF_WEEK) - 2; c.add(Calendar.DATE, -weekday); c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00")); } catch (Exception e) { e.printStackTrace(); } return c.getTime(); } /** * 获得目标日期的，周日 * * @return */ public Date getCurrentWeekDayEndTime(String targetDate) { Date from = DateUtils.parseDate(targetDate, DateUtils.FMT_DATE_); Calendar cal = Calendar.getInstance(); cal.setTime(from); try { int weekday = cal.get(Calendar.DAY_OF_WEEK); cal.add(Calendar.DATE, 8 - weekday); cal.setTime(_shortSdf.parse(_shortSdf.format(cal.getTime()))); } catch (Exception e) { e.printStackTrace(); } return cal.getTime(); } /** * 获得本周的最后一天，周日 * * @return */ public static Date getCurrentWeekDayEndTime() { Calendar c = Calendar.getInstance(); try { int weekday = c.get(Calendar.DAY_OF_WEEK); c.add(Calendar.DATE, 8 - weekday); c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59")); } catch (Exception e) { e.printStackTrace(); } return c.getTime(); } /** * 获得本天的开始时间 * * @return */ public static Date getCurrentDayStartTime() { Date now = new Date(); try { now = shortSdf.parse(shortSdf.format(now)); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 获得本天的结束时间 * * @return */ public static Date getCurrentDayEndTime() { Date now = new Date(); try { now = longSdf.parse(shortSdf.format(now) + " 23:59:59"); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 获得本小时的开始时间 * * @return */ public static Date getCurrentHourStartTime() { Date now = new Date(); try { now = longHourSdf.parse(longHourSdf.format(now)); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 获得本小时的结束时间 * * @return */ public static Date getCurrentHourEndTime() { Date now = new Date(); try { now = longSdf.parse(longHourSdf.format(now) + ":59:59"); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 获得本月的开始时间 * * @return */ public static Date getCurrentMonthStartTime() { Calendar c = Calendar.getInstance(); Date now = null; try { c.set(Calendar.DATE, 1); now = shortSdf.parse(shortSdf.format(c.getTime())); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 目标日期月份的结束时间 * * @return */ public Date getCurrentMonthEndTime(String targetDate) { Date from = DateUtils.parseDate(targetDate, DateUtils.FMT_DATE_); Calendar cal = Calendar.getInstance(); cal.setTime(from); Date now = null; try { cal.set(Calendar.DATE, 1); cal.add(Calendar.MONTH, 1); cal.add(Calendar.DATE, -1); now = _shortSdf.parse(_shortSdf.format(cal.getTime())); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 本月的结束时间 * * @return */ public static Date getCurrentMonthEndTime() { Calendar c = Calendar.getInstance(); Date now = null; try { c.set(Calendar.DATE, 1); c.add(Calendar.MONTH, 1); c.add(Calendar.DATE, -1); now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59"); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 当前年的开始时间 * * @return */ public static Date getCurrentYearStartTime() { Calendar c = Calendar.getInstance(); Date now = null; try { c.set(Calendar.MONTH, 0); c.set(Calendar.DATE, 1); now = shortSdf.parse(shortSdf.format(c.getTime())); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 当前年的结束时间 * * @return */ public static Date getCurrentYearEndTime() { Calendar c = Calendar.getInstance(); Date now = null; try { c.set(Calendar.MONTH, 11); c.set(Calendar.DATE, 31); now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59"); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 目标年的结束时间 * * @return */ public Date getCurrentYearEndTime(String targetDate) { Date from = DateUtils.parseDate(targetDate, DateUtils.FMT_DATE_); Calendar c = Calendar.getInstance(); c.setTime(from); Date now = null; try { c.set(Calendar.MONTH, 11); c.set(Calendar.DATE, 31); now = _shortSdf.parse(_shortSdf.format(c.getTime())); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 当前季度的开始时间 * * @return */ public static Date getCurrentQuarterStartTime() { Calendar c = Calendar.getInstance(); int currentMonth = c.get(Calendar.MONTH) + 1; 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; } /** * 目标日期季度的结束时间 * * @return */ public Date getCurrentQuarterEndTime(String targetDate) { Date from = DateUtils.parseDate(targetDate, DateUtils.FMT_DATE_); Calendar c = Calendar.getInstance(); c.setTime(from); int currentMonth = c.get(Calendar.MONTH) + 1; Date now = null; try { if (currentMonth >= 1 && currentMonth <= 3) { c.set(Calendar.MONTH, 2); c.set(Calendar.DATE, 31); } else if (currentMonth >= 4 && currentMonth <= 6) { c.set(Calendar.MONTH, 5); c.set(Calendar.DATE, 30); } else if (currentMonth >= 7 && currentMonth <= 9) { c.set(Calendar.MONTH, 8); c.set(Calendar.DATE, 30); } else if (currentMonth >= 10 && currentMonth <= 12) { c.set(Calendar.MONTH, 11); c.set(Calendar.DATE, 31); } now = _shortSdf.parse(_shortSdf.format(c.getTime())); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 当前季度的结束时间 * * @return */ public static Date getCurrentQuarterEndTime() { Calendar c = Calendar.getInstance(); int currentMonth = c.get(Calendar.MONTH) + 1; Date now = null; try { if (currentMonth >= 1 && currentMonth <= 3) { c.set(Calendar.MONTH, 2); c.set(Calendar.DATE, 31); } else if (currentMonth >= 4 && currentMonth <= 6) { c.set(Calendar.MONTH, 5); c.set(Calendar.DATE, 30); } else if (currentMonth >= 7 && currentMonth <= 9) { c.set(Calendar.MONTH, 8); c.set(Calendar.DATE, 30); } else if (currentMonth >= 10 && currentMonth <= 12) { c.set(Calendar.MONTH, 11); c.set(Calendar.DATE, 31); } now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59"); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 获取前/后半年的开始时间 * * @return */ public static Date getHalfYearStartTime() { Calendar c = Calendar.getInstance(); int currentMonth = c.get(Calendar.MONTH) + 1; Date now = null; try { if (currentMonth >= 1 && currentMonth <= 6) { c.set(Calendar.MONTH, 0); } else if (currentMonth >= 7 && currentMonth <= 12) { c.set(Calendar.MONTH, 6); } c.set(Calendar.DATE, 1); now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00"); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 获取目标日期的 前/后半年的结束时间 * * @return */ public Date getHalfYearEndTime(String targetDate) { Date from = DateUtils.parseDate(targetDate, DateUtils.FMT_DATE_); Calendar c = Calendar.getInstance(); c.setTime(from); int currentMonth = c.get(Calendar.MONTH) + 1; Date now = null; try { if (currentMonth >= 1 && currentMonth <= 6) { c.set(Calendar.MONTH, 5); c.set(Calendar.DATE, 30); } else if (currentMonth >= 7 && currentMonth <= 12) { c.set(Calendar.MONTH, 11); c.set(Calendar.DATE, 31); } now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59"); } catch (Exception e) { e.printStackTrace(); } return now; } /** * 获取前/后半年的结束时间 * * @return */ public static Date getHalfYearEndTime() { Calendar c = Calendar.getInstance(); int currentMonth = c.get(Calendar.MONTH) + 1; Date now = null; try { if (currentMonth >= 1 && currentMonth <= 6) { c.set(Calendar.MONTH, 5); c.set(Calendar.DATE, 30); } else if (currentMonth >= 7 && currentMonth <= 12) { c.set(Calendar.MONTH, 11); c.set(Calendar.DATE, 31); } now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59"); } catch (Exception e) { e.printStackTrace(); } return now; } public static void main(String[] args) { System.out.println("当前小时开始：" + getCurrentHourStartTime().toString()); System.out.println("当前小时结束：" + getCurrentHourEndTime().toString()); System.out.println("当前天开始：" + getCurrentDayStartTime().toString()); System.out.println("当前天时结束：" + getCurrentDayEndTime().toString()); System.out.println("当前周开始：" + getCurrentWeekDayStartTime().toString()); System.out.println("当前周结束：" + getCurrentWeekDayEndTime().toString()); System.out.println("当前月开始：" + getCurrentMonthStartTime().toString()); System.out.println("当前月结束：" + getCurrentMonthEndTime().toString()); System.out.println("当前季度开始：" + getCurrentQuarterStartTime().toString()); System.out.println("当前季度结束：" + getCurrentQuarterEndTime().toString()); System.out.println("当前半年/后半年开始：" + getHalfYearStartTime().toString()); System.out.println("当前半年/后半年结束：" + getHalfYearEndTime().toString()); System.out.println("当前年开始：" + getCurrentYearStartTime().toString()); System.out.println("当前年结束：" + getCurrentYearEndTime().toString()); }}阅读全文
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