#AI

zhou zhou

6 小时以前 51877df13075ad10ef51107f15bcd21f1661febe

 rsf-server/src/main/java/com/vincent/rsf/server/common/utils/DateUtils.java

@@ -6,7 +6,10 @@
import java.text.SimpleDateFormat;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

/**
 * 日期时间工具类
@@ -230,6 +233,23 @@
        SimpleDateFormat dateFormat = new SimpleDateFormat(pattern);
        return dateFormat.parse(dateStr);
    }

    /**
     * 获取前30天所有日期
     * @param pattern
     * @return
     */
    public static List<String> getLastMonthDays(String pattern) {
        LocalDate today = LocalDate.now().minusDays(1);
        LocalDate oneMonthAgo = today.minusMonths(1);
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);
        return IntStream.iterate(0, i -> i + 1)
                .limit(ChronoUnit.DAYS.between(oneMonthAgo, today) + 1)
                .mapToObj(oneMonthAgo::plusDays)
                .map(date -> date.format(formatter))
                .collect(Collectors.toList());
    }


    /**
     * 日期型字符串转化为日期 格式
@@ -724,3 +744,4 @@
        return newDate;
    }
}