4dkankan-fusion/src/main/java/com/fdkankan/fusion/common/util/DateUtils.java

package com.fdkankan.fusion.common.util;

import cn.hutool.core.date.DateUtil;
import cn.hutool.core.util.NumberUtil;

import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.Period;
import java.time.YearMonth;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

public class DateUtils {


    public static Date getHoursTime(Date date){
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.HOUR, 1);
        return calendar.getTime();
    }

    /**
     * 获取一年前的日期
     */
    public static String getYearAgo(){
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.YEAR, -1);
        Date time = calendar.getTime();
        return getMonthStr(time);
    }

    /**
     * 获取当前时间
     */
    public static String getMonthStr(Date date){
        SimpleDateFormat formatter = new SimpleDateFormat("yyy-MM-dd");
        return  formatter.format(date);
    }


    /**
     * 获取时间段之间的年月份
     */
    public static List<String> getMonthdateList(String startTime,String endTime){
        startTime = startTime.replace(" 00:00:00","");
        endTime = endTime.replace(" 23:59:59","");
        List<String> dateList = new ArrayList<>();
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyy-MM-dd");
        LocalDate start = LocalDate.parse(startTime, formatter);
        LocalDate end = LocalDate.parse(endTime, formatter);

        Period period = Period.between(start, end);
        int years = period.getYears();
        int months = period.getMonths() + years *12;

        for(int i = 0 ;i <= months;i++){
            YearMonth yearMonth = YearMonth.from(start.plusMonths(i));
            int year = yearMonth.getYear();
            int month = yearMonth.getMonthValue();
            String monthStr = String.format("%02d", month);
            dateList.add(year+"-"+monthStr);
        }
        return dateList;
    }

    public static String getCnDateStr(String time){
        StringBuilder result = new StringBuilder();
        char[] charArray = time.toCharArray();
        for (char c : charArray) {
            String s = String.valueOf(c);
            switch (s){
                case "0": s = "〇";break;
                case "1": s = "一";break;
                case "2": s = "二";break;
                case "3": s = "三";break;
                case "4": s = "四";break;
                case "5": s = "五";break;
                case "6": s = "六";break;
                case "7": s = "七";break;
                case "8": s = "八";break;
                case "9": s = "九";break;
            }
            result.append(s);
        }
        return result.toString();
    }


    public static void main(String[] args) {
       // System.out.println(getMonthdateList(getYearAgo(),getMonthStr(new Date())));
        System.out.println(getHoursTime(new Date()));
    }
}