#feat .

yanghui

2022-11-28 42521c9b51c1bd9a40036f18fd610cd46601222d

 springcloud_k8s_panzhihuazhihuishequ/common/src/main/java/com/panzhihua/common/utlis/DateUtils.java

@@ -4,11 +4,10 @@
import java.text.SimpleDateFormat;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.*;

import cn.hutool.core.date.DateUnit;
import cn.hutool.core.date.DateUtil;
import lombok.extern.slf4j.Slf4j;

@Slf4j
@@ -927,11 +926,10 @@
    }

    public static void main(String[] args) throws Exception {
         Date date= getLastMonthFirst();
         Date after = getLastMonthEnd();
         System.out.println(date);
         System.out.println(after);

//        List<String> beforeDays = getBeforeDays(15);
//        System.out.println(beforeDays);
        List<String> yearMonths = getYearMonths();
        System.out.println(yearMonths);

    }

@@ -1129,4 +1127,80 @@

        return firstDayOfMonth;
    }

    /**
     * 获取20天前那天时间
     *
     * @return
     */
    public static String getTwentyDay() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date());
        cal.add(Calendar.DATE, -20);

        return DateUtil.format(cal.getTime(),"yyyy-MM-dd");
    }

    /**
     * 获取之前的日期
     *
     * @return
     */
    public static String getBeforeDay(Integer amount) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date());
        cal.add(Calendar.DATE, -amount);
        return DateUtil.format(cal.getTime(),"yyyy-MM-dd");
    }

    /**
     * 获取最近本月20天数据
     *
     * @return
     */
    public static String getMonthTwentyDay() {
        Date date = new Date();
        Long offset = DateUtil.between(new Date(), DateUtil.beginOfMonth(date), DateUnit.DAY);
        if (offset >= 20) {
            return getTwentyDay();
        } else {
            //距离月初不足20天
            Calendar calendar = new GregorianCalendar();
            calendar.setTime(date);
            //获得本月第一天
            calendar.add(Calendar.MONTH, 0);
            calendar.set(Calendar.DAY_OF_MONTH, 1);
            return DateUtil.format(calendar.getTime(),"yyyy-MM-dd");
        }

    }

    public static List<String> getBeforeDays(int before) {
        List<String> dates = new ArrayList<>();
        for (int i = before; i >= 0; i--) {
            dates.add(getBeforeDay(i));
        }
        return dates;
    }

    /**
     * 获取当年所有月份
     *
     * @return
     */
    public static List<String> getYearMonths() {
        Calendar instance = Calendar.getInstance();
        int year = instance.get(Calendar.YEAR);
        List<String> months = new ArrayList<>();
        for (int i = 1; i <= 12; i++) {
            String result = String.valueOf(year);
            if (i < 10) {
                result = result + "-0" +i;
            } else {
                result = result + "-"+i;
            }
            months.add(result);
        }
        return months;
    }
}