Merge branch 'test'

CeDo

2021-06-15 1d21a9673d47a186bd189d9cceaa6e2ea17d293d

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

@@ -642,12 +642,85 @@
    }


    /**
     * 将日期对象格式化成yyyy-MM-dd格式的字符串
     *
     * @param date         日期对象
     * @return String
     */
    public static String getDateStringYMD(Date date) {

        String dateString = "";
        if (date != null) {
            dateString = yyyyMMdd_format.format(date);
        }
        return dateString;
    }

    /**
     * 获取当前月第一天
     * @return
     */
    public static Date getFirstDayOfMonth() {
        Calendar cal = Calendar.getInstance();
        cal.add(Calendar.MONTH,0);
        int actualMinimum = cal.getActualMinimum(Calendar.DAY_OF_MONTH);
        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY),actualMinimum,00,00,00);
        return cal.getTime();
    }

    /**
     * 获取当前年月的第一天时间
     * @param year  年份
     * @param month 月份
     * @return  时间
     */
    public static Date getYearMonthStart(Integer year,Integer month) {
        Calendar cal = Calendar.getInstance();
        // 设置年份
        cal.set(Calendar.YEAR, year);
        // 设置月份
        cal.set(Calendar.MONTH, month - 1);
        // 获取某月最小天数
        int firstDay = cal.getMinimum(Calendar.DATE);
        // 设置日历中月份的最小天数
        cal.set(Calendar.DAY_OF_MONTH, firstDay);
        int actualMinimum = cal.getActualMinimum(Calendar.DAY_OF_MONTH);
        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY),actualMinimum,00,00,00);
        return cal.getTime();
    }

    /**
     * 获取当前年月的最后一天时间
     * @param year  年份
     * @param month 月份
     * @return  时间
     */
    public static Date getYearMonthEnd(Integer year,Integer month) {
        Calendar cal = Calendar.getInstance();
        // 设置年份
        cal.set(Calendar.YEAR, year);
        // 设置月份
        cal.set(Calendar.MONTH, month - 1);
        // 获取某月最大天数
        int lastDay = cal.getMaximum(Calendar.DATE);
        // 设置日历中月份的最大天数
        cal.set(Calendar.DAY_OF_MONTH, lastDay);
        int actualMinimum = cal.getActualMinimum(Calendar.DAY_OF_MONTH);
        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY),actualMinimum,00,00,00);
        return cal.getTime();
    }





    public static void main(String[]args)throws Exception{
        isValidDate("2020/12/4");
//        Date date= new Date();
//        Date after = new Date();
//        System.out.println(calTimeDifference(date,after));
        System.out.println(getYearMonthStart(2021,2));

    }
}