Java获取指定时间段的年份(开始、结束时间)、月份(开始、结束时间)、天数(开始、结束时间)

package test;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;

public class DateTest {

    public static void main(String[] args) {
        System.out.println(getYears("2016-01-01 00:00:00","2018-07-01 00:00:00"));
        System.out.println(getMonths("2018-01-01 00:00:00","2018-07-01 00:00:00"));
        System.out.println(getDays("2018-06-01 00:00:00","2018-07-01 00:00:00"));
    }
    
    /***
     * 获取两个时间段的年份/年第一天/年最后一天
     * @param startTime
     * @param endTime
     * @return
     */
    public static List<Map> getYears(String startTime, String endTime) {
        List<Map> res=new ArrayList<Map>();
        DateFormat dateFormat = new SimpleDateFormat("yyyy");
        DateFormat dateFormat2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        try {
            Date start = dateFormat.parse(startTime);
            Date end = dateFormat.parse(endTime);
            Calendar tempStart = Calendar.getInstance();
            tempStart.setTime(start);
            Calendar tempEnd = Calendar.getInstance();
            tempEnd.setTime(end);
            tempEnd.add(Calendar.YEAR,1);// 日期加1(包含结束)
            while (tempStart.before(tempEnd)) {
                String year=dateFormat.format(tempStart.getTime());
                String first=year+"-01-01 00:00:00";
                String last=year+"-12-31 23:59:59";
                Map<String,Object> map=new HashMap<String,Object>();
                map.put("year", year);
                map.put("first", dateFormat2.parse(first));
                map.put("last", dateFormat2.parse(last));
                res.add(map);
                tempStart.add(Calendar.YEAR,1);
            }
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return res;
    }
    
    /***
     * 获取两个时间段的年份-月份/月第一天/月最后一天
     * @param startTime
     * @param endTime
     * @return
     */
    public static List<Map> getMonths(String startTime, String endTime) {
        List<Map> res=new ArrayList<Map>();
        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM");
        DateFormat dateFormat2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        DateFormat dateFormat3 = new SimpleDateFormat("yyyy-MM-dd");
        try {
            Date start = dateFormat.parse(startTime);
            Date end = dateFormat.parse(endTime);
            Calendar tempStart = Calendar.getInstance();
            tempStart.setTime(start);
            Calendar tempEnd = Calendar.getInstance();
            tempEnd.setTime(end);
            tempEnd.add(Calendar.MONTH,1);// 日期加1(包含结束)
            while (tempStart.before(tempEnd)) {
                String month=dateFormat.format(tempStart.getTime());
                tempStart.set(Calendar.DAY_OF_MONTH, 1);
                String first=dateFormat3.format(tempStart.getTime());
                tempStart.set(Calendar.DAY_OF_MONTH, tempStart.getActualMaximum(Calendar.DAY_OF_MONTH));  
                Map<String,Object> map=new HashMap<String,Object>();
                map.put("month", month);
                map.put("first", dateFormat2.parse(first+" 00:00:00"));
                map.put("last", dateFormat2.parse(first+" 23:59:59"));
                res.add(map);
                tempStart.add(Calendar.MONTH,1);
            }
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return res;
    }

    /***
     * 获取两个时间段的天数/开始时间/结束时间
     * @param startTime
     * @param endTime
     * @return
     */
    public static List<Map> getDays(String startTime, String endTime) {
        // 返回的日期集合
        List<Map> res=new ArrayList<Map>();
        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        DateFormat dateFormat2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        try {
            Date start = dateFormat.parse(startTime);
            Date end = dateFormat.parse(endTime);
            Calendar tempStart = Calendar.getInstance();
            tempStart.setTime(start);
            Calendar tempEnd = Calendar.getInstance();
            tempEnd.setTime(end);
            tempEnd.add(Calendar.DATE, +1);// 日期加1(包含结束)
            while (tempStart.before(tempEnd)) {
                String day=dateFormat.format(tempStart.getTime());
                Map<String,Object> map=new HashMap<String,Object>();
                map.put("day", day);
                map.put("first", dateFormat2.parse(day+" 00:00:00"));
                map.put("last", dateFormat2.parse(day+" 23:59:59"));
                res.add(map);
                tempStart.add(Calendar.DAY_OF_YEAR, 1);
            }
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return res;
    }
}

 

posted @ 2019-01-11 15:27  迢迢  阅读(4197)  评论(0编辑  收藏  举报