列表页删除最后一页的最后一条数据，定位前一页数据

1、调用后端接口时，返回最大页码数，这样就可以避免

// 最后一页就剩一条，删除或者取消关注，默认展示前一页
if (tableData?.length == 0 && currentPage > 1) {
	const beforePageNum = result?.maxPage == 0 ? 1 : result?.maxPage;
	setCurrentPage(beforePageNum);
}

　　

2、计算两个日期的间隔天数

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import java.util.Date;
import java.util.Objects;



 public static Long getPeriodDays(Date beforeDate, Date afterDate) {
        if (afterDate == null || beforeDate == null) {
            return null;
        }
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        String beforeDateStr = format.format(beforeDate);
        String afterDateStr = format.format(afterDate);
        LocalDate beforeDateLocal = LocalDate.parse(beforeDateStr, formatter);
        LocalDate afterDateLocal = LocalDate.parse(afterDateStr, formatter);
        Long period = ChronoUnit.DAYS.between(beforeDateLocal, afterDateLocal);
        return period;
    }