java按照月份把一个时间段拆分成多个时间区间

曾经终败给现在 2022-06-01 02:07 944阅读 0赞

package com.changchong.util;
    
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.util.ArrayList;
    import java.util.Calendar;
    import java.util.Date;
    import java.util.List;
    
    import org.junit.Test;
    /** * 根据一段时间区间，按月份拆分成多个时间段 * @author lxg * * 2016年9月5日下午6:18:36 */
    public class SplitDateUtil { 
    
        @Test
        public void demo(){
            List<KeyValueForDate> list = SplitDateUtil.getKeyValueForDate("2015-08-23","2016-06-10");
            System.out.println("开始日期--------------结束日期");
            for(KeyValueForDate date : list){
                System.out.println(date.getStartDate()+"-----"+date.getEndDate());
            }
        }
    
        /** * 根据一段时间区间，按月份拆分成多个时间段 * @param startDate 开始日期 * @param endDate 结束日期 * @return */
        @SuppressWarnings("deprecation")
        public static List<KeyValueForDate> getKeyValueForDate(String startDate,String endDate) {
            List<KeyValueForDate> list = null;
            try {
                list = new ArrayList<KeyValueForDate>();
    
                String firstDay = "";
                String lastDay = "";
                Date d1 = new SimpleDateFormat("yyyy-MM-dd").parse(startDate);// 定义起始日期
    
                Date d2 = new SimpleDateFormat("yyyy-MM-dd").parse(endDate);// 定义结束日期
    
                Calendar dd = Calendar.getInstance();// 定义日期实例
                dd.setTime(d1);// 设置日期起始时间
                Calendar cale = Calendar.getInstance();
    
                Calendar c = Calendar.getInstance();
                c.setTime(d2);
    
                int startDay = d1.getDate();
                int endDay = d2.getDate();
                SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    
                KeyValueForDate keyValueForDate = null;
    
                while (dd.getTime().before(d2)) {
         // 判断是否到结束日期
                    keyValueForDate = new KeyValueForDate();
                    cale.setTime(dd.getTime());
    
                    if(dd.getTime().equals(d1)){
                        cale.set(Calendar.DAY_OF_MONTH, dd
                                .getActualMaximum(Calendar.DAY_OF_MONTH));
                        lastDay = sdf.format(cale.getTime());
                        keyValueForDate.setStartDate(sdf.format(d1));
                        keyValueForDate.setEndDate(lastDay);
    
                    }else if(dd.get(Calendar.MONTH) == d2.getMonth() && dd.get(Calendar.YEAR) == c.get(Calendar.YEAR)){
                        cale.set(Calendar.DAY_OF_MONTH,1);//取第一天
                        firstDay = sdf.format(cale.getTime());
    
                        keyValueForDate.setStartDate(firstDay);
                        keyValueForDate.setEndDate(sdf.format(d2));
    
                    }else {
                        cale.set(Calendar.DAY_OF_MONTH,1);//取第一天
                        firstDay = sdf.format(cale.getTime());
    
                        cale.set(Calendar.DAY_OF_MONTH, dd
                                .getActualMaximum(Calendar.DAY_OF_MONTH));
                        lastDay = sdf.format(cale.getTime());
    
                        keyValueForDate.setStartDate(firstDay);
                        keyValueForDate.setEndDate(lastDay);
    
                    }
                    list.add(keyValueForDate);
                    dd.add(Calendar.MONTH, 1);// 进行当前日期月份加1
    
                }
    
                if(endDay<startDay){
                    keyValueForDate = new KeyValueForDate();
    
                    cale.setTime(d2);
                    cale.set(Calendar.DAY_OF_MONTH,1);//取第一天
                    firstDay = sdf.format(cale.getTime());
    
                    keyValueForDate.setStartDate(firstDay);
                    keyValueForDate.setEndDate(sdf.format(d2));
                    list.add(keyValueForDate);
                }
            } catch (ParseException e) {
                return null;
            }
    
            return list;
        }
    
    }
    
    
    
    class KeyValueForDate{
        private String startDate;
        private String endDate;
        public String getStartDate() {
            return startDate;
        }
        public void setStartDate(String startDate) {
            this.startDate = startDate;
        }
        public String getEndDate() {
            return endDate;
        }
        public void setEndDate(String endDate) {
            this.endDate = endDate;
        }
    
    
    }
       
        
         1
         2
         3
         4
         5
         6
         7
         8
         9
         10
         11
         12
         13
         14
         15
         16
         17
         18
         19
         20
         21
         22
         23
         24
         25
         26
         27
         28
         29
         30
         31
         32
         33
         34
         35
         36
         37
         38
         39
         40
         41
         42
         43
         44
         45
         46
         47
         48
         49
         50
         51
         52
         53
         54
         55
         56
         57
         58
         59
         60
         61
         62
         63
         64
         65
         66
         67
         68
         69
         70
         71
         72
         73
         74
         75
         76
         77
         78
         79
         80
         81
         82
         83
         84
         85
         86
         87
         88
         89
         90
         91
         92
         93
         94
         95
         96
         97
         98
         99
         100
         101
         102
         103
         104
         105
         106
         107
         108
         109
         110
         111
         112
         113
         114
         115
         116
         117
         118
         119
         120
         121
         122
         123
         124
         125
         126
         127
         128
         129
         130
         131
         132
         133

![这里写图片描述][20160905183010730]

[20160905183010730]: /images/20220601/8ca30a5edc674656be44dc7eb76b32bd.png