package com.yuanchu.mom;
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import org.junit.jupiter.api.Test;
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import org.springframework.boot.test.context.SpringBootTest;
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import java.time.LocalDate;
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import java.time.LocalDateTime;
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import java.time.LocalTime;
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import java.time.temporal.TemporalAdjusters;
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import java.time.temporal.WeekFields;
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import java.util.Locale;
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@SpringBootTest
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class SystemRunApplicationTest {
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@Test
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void contextLoads() {
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// 获取当前日期
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LocalDate today = LocalDate.now();
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// 获取本月的第一天和最后一天
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LocalDate firstDayOfMonth = today.with(TemporalAdjusters.firstDayOfMonth());
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LocalDate lastDayOfMonth = today.with(TemporalAdjusters.lastDayOfMonth());
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// 获取周字段信息（根据区域设置）
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WeekFields weekFields = WeekFields.of(Locale.getDefault());
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// 获取本月第一天的周一
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LocalDate startOfWeek = firstDayOfMonth.with(TemporalAdjusters.previousOrSame(weekFields.getFirstDayOfWeek()));
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// 遍历本月所有天数，找出每周的第一天和最后一天
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LocalDate endOfWeek;
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while (startOfWeek.isBefore(firstDayOfMonth.plusMonths(1))) {
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endOfWeek = startOfWeek.plusDays(6);
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LocalDateTime startDateTime = LocalDateTime.of(startOfWeek, LocalTime.MIDNIGHT);
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LocalDateTime endDateTime = LocalDateTime.of(endOfWeek, LocalTime.MIDNIGHT);
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System.out.println("Week starts on " + startDateTime + " and ends on " + endDateTime);
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startOfWeek = startOfWeek.plusWeeks(1);
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}
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}
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}
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