Calendar日期类常用使用方法

阳光穿透心脏的1/2处 2022-01-19 01:11 453阅读 0赞

原博链接：[https://blog.csdn.net/weixin\_43052839/article/details/82015021][https_blog.csdn.net_weixin_43052839_article_details_82015021]

# Calendar获取今天、昨天、近三天、近一周、近一月、本周、上周、本月、上月、本季度、上季度、本年、上一年开始时间和结束时间 #

/** * 获取今日开始时间和结束时间 * @param condition * @return */
        private void setDayRange(PageData condition){ 
            Calendar calendar = Calendar.getInstance();
            calendar.set(Calendar.MILLISECOND,0);
            calendar.set(Calendar.SECOND,0);
            calendar.set(Calendar.MINUTE,0);
            calendar.set(Calendar.HOUR_OF_DAY,0);
            condition.put("startTime",calendar.getTime());
            calendar.set(Calendar.HOUR_OF_DAY,24);
            condition.put("stopTime",calendar.getTime());
        }
    
        /** * 获取昨天开始时间和结束时间 * @param condition * @return */
        private void setYesterdayRange(PageData condition) { 
            Calendar calendar = Calendar.getInstance();
            calendar.set(Calendar.MILLISECOND,0);
            calendar.set(Calendar.SECOND,0);
            calendar.set(Calendar.MINUTE,0);
            calendar.set(Calendar.HOUR_OF_DAY,0);
            condition.put("stopTime",calendar.getTime());
            calendar.set(Calendar.HOUR_OF_DAY,-24);
            condition.put("startTime",calendar.getTime());
        }
    
        /** * 获得最近三天的开始时间和结束时间 * @param condition * @return */
        private void setThreeRange(PageData condition) { 
            Calendar calendar = Calendar.getInstance();
            calendar.set(Calendar.MILLISECOND,0);
            calendar.set(Calendar.SECOND,0);
            calendar.set(Calendar.MINUTE,0);
            calendar.set(Calendar.HOUR_OF_DAY,24);
            condition.put("stopTime",calendar.getTime());
            calendar.set(Calendar.HOUR_OF_DAY,-72);
            condition.put("startTime",calendar.getTime());
        }
    
        /** * 获得近一周的开始时间和结束时间 * @param condition * @return */
        private void setDaySevenRange(PageData condition){ 
            Calendar calendar = Calendar.getInstance();
            calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
            calendar.set(Calendar.HOUR_OF_DAY,24);
            condition.put("stopTime",calendar.getTime());
            calendar.set(Calendar.HOUR_OF_DAY,-168);
            condition.put("startTime",calendar.getTime());
        }
    
        /** * 获得近一月的开始时间和结束时间 * @param condition * @return */
        private void setDayTRange(PageData condition){ 
            Calendar calendar = Calendar.getInstance();
            calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
            calendar.set(Calendar.HOUR_OF_DAY,24);
            condition.put("stopTime",calendar.getTime());
            calendar.set(Calendar.HOUR_OF_DAY,-720);
            condition.put("startTime",calendar.getTime());
        }
    
        /** * 获取本周开始时间和结束时间 * @param condition * @return */
        private void setWeekRange(PageData condition){ 
            Calendar calendar = Calendar.getInstance();
            calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
            
            calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
            condition.put("startTime",calendar.getTime());
            calendar.add(Calendar.DAY_OF_WEEK, 7);
            condition.put("stopTime",calendar.getTime());
    
    		或者
    		int week = calendar.get(Calendar.DAY_OF_WEEK)-2;
            calendar.add(Calendar.DATE, -week);
            condition.put("startTime",dateToString(calendar.getTime()));
            calendar.add(Calendar.DATE, 7-week);
            condition.put("stopTime",dateToString(calendar.getTime()));
        }
    
        /** * 获取上周开始时间和结束时间 * @param condition * @return */
        private void setLastWeekRange(PageData condition){ 
            Calendar calendar = Calendar.getInstance();
            calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
            calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
            condition.put("stopTime",calendar.getTime());
            calendar.add(Calendar.DAY_OF_WEEK, -7);
            condition.put("startTime",calendar.getTime());
        }
    
        /** * 获取本月开始时间和结束时间 * @param condition * @return */
        private void setMonthRange(PageData condition){ 
            Calendar calendar = Calendar.getInstance();
            calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
            calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
            condition.put("startTime",calendar.getTime());
            calendar.add(Calendar.DAY_OF_WEEK, 7);
            calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
            calendar.set(Calendar.HOUR_OF_DAY, 24);
            condition.put("stopTime",calendar.getTime());
        }
    
        /** * 获取上月开始时间和结束时间 * @param condition * @return */
        private void setLastMonthRange(PageData condition){ 
            Calendar calendar = Calendar.getInstance();
            calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
            calendar.add(Calendar.MONTH, -1);
            calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
            condition.put("startTime",calendar.getTime());
            calendar.add(Calendar.DAY_OF_WEEK, 7);
            calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
            calendar.set(Calendar.HOUR_OF_DAY, 24);
            condition.put("stopTime",calendar.getTime());
        }
    
        /** * 获取本季度开始时间和结束时间 * @param condition * @return */
        private void setQuarterRange(PageData condition){ 
            Calendar calendar = Calendar.getInstance();
            calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), 		calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
            int currentMonth = calendar.get(Calendar.MONTH) + 1;
            try { 
                if (currentMonth >= 1 && currentMonth <= 3)
                    calendar.set(Calendar.MONTH, 0);
                else if (currentMonth >= 4 && currentMonth <= 6)
                    calendar.set(Calendar.MONTH, 3);
                else if (currentMonth >= 7 && currentMonth <= 9)
                    calendar.set(Calendar.MONTH, 6);
                else if (currentMonth >= 10 && currentMonth <= 12)
                    calendar.set(Calendar.MONTH, 9);
                calendar.set(Calendar.DATE, 1);
            } catch (Exception e) { 
                e.printStackTrace();
            }
            condition.put("startTime",calendar.getTime());
            calendar.add(Calendar.MONTH, 3);
            condition.put("stopTime",calendar.getTime());
        }
    
        /** * 获取上季度开始时间和结束时间 * @param condition * @return */
        private void setLastQuarterRange(PageData condition){ 
            Calendar calendar = Calendar.getInstance();
            calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
            int currentMonth = calendar.get(Calendar.MONTH) + 1;
            try { 
                if (currentMonth >= 1 && currentMonth <= 3)
                    calendar.set(Calendar.MONTH, 0);
                else if (currentMonth >= 4 && currentMonth <= 6)
                    calendar.set(Calendar.MONTH, 3);
                else if (currentMonth >= 7 && currentMonth <= 9)
                    calendar.set(Calendar.MONTH, 6);
                else if (currentMonth >= 10 && currentMonth <= 12)
                    calendar.set(Calendar.MONTH, 9);
                calendar.set(Calendar.DATE, 1);
            } catch (Exception e) { 
                e.printStackTrace();
            }
            calendar.add(Calendar.MONTH, -3);
            condition.put("startTime",calendar.getTime());
            calendar.add(Calendar.MONTH, 3);
            condition.put("stopTime",calendar.getTime());
        }
    
    
        /** * 获取本年开始时间和结束时间 * @param condition * @return */
        private void setYearRange(PageData condition){ 
            Calendar calendar = Calendar.getInstance();
            calendar.set(calendar.get(Calendar.YEAR), 0, calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
            calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
            condition.put("startTime",calendar.getTime());
            calendar.add(Calendar.YEAR, 1);
            condition.put("stopTime",calendar.getTime());
        }
    
        /** * 获取上一年开始时间和结束时间 * @param condition * @return */
        private void setLastYearRange(PageData condition){ 
            Calendar calendar = Calendar.getInstance();
            calendar.set(calendar.get(Calendar.YEAR), 0, calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
            calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
            calendar.add(Calendar.YEAR, -1);
            condition.put("startTime",calendar.getTime());
            calendar.add(Calendar.YEAR, 1);
            condition.put("stopTime",calendar.getTime());
        }
    
        /** * （"startTime" -> "Fri Jun 08 00:00:00 CST 2018"）String的Date转为String类型的date */
        private String strToformatDate(String date){ 
            String str="";
            Date date1=new Date();
            try { 
                DateFormat df = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.US);
                date1 = df.parse(date);
                df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                str = df.format(date1);
            }catch (Exception e){ 
                e.printStackTrace();
            }
            return str;
        }
    
        /** * （"startTime" -> "Fri Jun 08 00:00:00 CST 2018"）String的Date转为时间戳 */
        public long toformatDate(String date){ 
            String str="";
            Date date1=new Date();
            try { 
                DateFormat df = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.US);
                date1 = df.parse(date);
                System.err.println(date1.getTime()/1000);
            }catch (Exception e){ 
                e.printStackTrace();
            }
            return date1.getTime()/1000;
        }
    
    /** * 测试 */
    public static void main(String[] args) { 
    	PageData condition = new PageData();
    	setLastQuarterRange(condition);
    	String startTime=String.valueOf(strToformatDate(condition.get("startTime").toString()));
    	String stopTime=String.valueOf(strToformatDate(condition.get("stopTime").toString()));
    	System.out.println(startTime+"--->"+stopTime);
    }
    
    /** * 得到n天之后是周几 * @param days * @return */
    public static String getAfterDayWeek(String days) { 
        	int daysInt = Integer.parseInt(days);
            Calendar canlendar = Calendar.getInstance(); // java.util包
            canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动
            Date date = canlendar.getTime();
            SimpleDateFormat sdf = new SimpleDateFormat("E");
            String dateStr = sdf.format(date);
            return dateStr;
    }
      
    /** * 得到n天之后的当前时间 * @param days * @return */
    public static String getAfterDayDate(String days) { 
        	int daysInt = Integer.parseInt(days);
            Calendar canlendar = Calendar.getInstance(); // java.util包
            canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动
            Date date = canlendar.getTime();
            SimpleDateFormat sdfd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            String dateStr = sdfd.format(date);
            return dateStr;
    }
    
     /** * 得到几分钟后的时间 * @param date minute（可为正负） * @return */
    public static Date getAfterTimeDate(Date date,int minute) { 
    	Calendar canlendar = Calendar.getInstance(); // java.util包
    	canlendar.setTime(date);
    	canlendar.add(Calendar.MINUTE, minute); // 日期减 如果不够减会将月变动
    	return canlendar.getTime();
    }
    
     /** * 时间相减得到天数（开始时间和结束时间可任意大小） * @param beginDateStr（格式为"yyyy-MM-dd"，也可为"yyyy-MM-dd hh:mm:ss"） * @param endDateStr * @return long */
       public static long getDaySub(String beginDateStr,String endDateStr){ 
           long day=0;
           SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
           //SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
           Date beginDate = null;
           Date endDate = null;
           try { 
    		beginDate = format.parse(beginDateStr);
    		endDate= format.parse(endDateStr);
    } catch (ParseException e) { 
    		e.printStackTrace();
    }
           day=(endDate.getTime()-beginDate.getTime())/(24*60*60*1000);
           //System.out.println("相隔的天数="+day);
           return day;
       }
       
       private String dateToString(Date date){ 
            DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            return format.format(date);
      }

[https_blog.csdn.net_weixin_43052839_article_details_82015021]: https://blog.csdn.net/weixin_43052839/article/details/82015021