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+package org.dromara.utils;
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+
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+import org.apache.commons.lang3.time.DateFormatUtils;
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+
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+import java.lang.management.ManagementFactory;
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+import java.text.ParseException;
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+import java.text.SimpleDateFormat;
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+import java.time.*;
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+import java.time.format.DateTimeFormatter;
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+import java.util.ArrayList;
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+import java.util.Date;
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+import java.util.List;
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+
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+/**
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+ * 时间工具类
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+ *
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+ * @author ruoyi
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+ */
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+public class DateUtils extends org.apache.commons.lang3.time.DateUtils
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+{
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+ public static String YYYY = "yyyy";
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+
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+ public static String YYYY_MM = "yyyy-MM";
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+
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+ public static String YYYY_MM_DD = "yyyy-MM-dd";
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+
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+ public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";
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+
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+ public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
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+
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+ private static String[] parsePatterns = {
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+ "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
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+ "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
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+ "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};
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+
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+ /**
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+ * 获取当前Date型日期
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+ *
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+ * @return Date() 当前日期
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+ */
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+ public static Date getNowDate()
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+ {
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+ return new Date();
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+ }
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+
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+ /**
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+ * 获取当前日期, 默认格式为yyyy-MM-dd
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+ *
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+ * @return String
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+ */
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+ public static String getDate()
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+ {
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+ return dateTimeNow(YYYY_MM_DD);
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+ }
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+
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+ public static String getYear()
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+ {
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+ return dateTimeNow(YYYY);
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+ }
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+ public static String getMonth()
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+ {
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+ return dateTimeNow(YYYY_MM);
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+ }
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+
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+ public static final String getTime()
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+ {
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+ return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
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+ }
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+
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+ public static final String dateTimeNow()
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+ {
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+ return dateTimeNow(YYYYMMDDHHMMSS);
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+ }
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+
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+ public static final String dateTimeNow(final String format)
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+ {
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+ return parseDateToStr(format, new Date());
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+ }
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+
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+ public static final String dateTime(final Date date)
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+ {
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+ return parseDateToStr(YYYY_MM_DD, date);
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+ }
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+
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+ public static final String parseDateToStr(final String format, final Date date)
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+ {
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+ return new SimpleDateFormat(format).format(date);
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+ }
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+
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+ public static final Date dateTime(final String format, final String ts)
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+ {
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+ try
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+ {
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+ return new SimpleDateFormat(format).parse(ts);
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+ }
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+ catch (ParseException e)
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+ {
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+ throw new RuntimeException(e);
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+ }
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+ }
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+
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+ /**
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+ * 日期路径 即年/月/日 如2018/08/08
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+ */
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+ public static final String datePath()
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+ {
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+ Date now = new Date();
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+ return DateFormatUtils.format(now, "yyyy/MM/dd");
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+ }
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+ /**
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+ * 日期路径 即年/月/日 如20180808
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+ */
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+ public static final String dateTime()
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+ {
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+ Date now = new Date();
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+ return DateFormatUtils.format(now, "yyyyMMdd");
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+ }
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+
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+ /**
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+ * 日期型字符串转化为日期 格式
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+ */
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+ public static Date parseDate(Object str)
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+ {
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+ if (str == null)
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+ {
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+ return null;
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+ }
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+ try
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+ {
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+ return parseDate(str.toString(), parsePatterns);
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+ }
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+ catch (ParseException e)
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+ {
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+ return null;
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+ }
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+ }
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+
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+ /**
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+ * 获取服务器启动时间
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+ */
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+ public static Date getServerStartDate()
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+ {
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+ long time = ManagementFactory.getRuntimeMXBean().getStartTime();
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+ return new Date(time);
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+ }
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+
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+ /**
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+ * 计算相差天数
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+ */
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+ public static int differentDaysByMillisecond(Date date1, Date date2)
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+ {
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+ return Math.abs((int) ((date2.getTime() - date1.getTime()) / (1000 * 3600 * 24)));
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+ }
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+
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+ /**
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+ * 计算时间差
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+ *
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+ * @param endDate 最后时间
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+ * @param startTime 开始时间
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+ * @return 时间差（天/小时/分钟）
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+ */
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+ public static String timeDistance(Date endDate, Date startTime)
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+ {
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+ long nd = 1000 * 24 * 60 * 60;
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+ long nh = 1000 * 60 * 60;
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+ long nm = 1000 * 60;
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+ // long ns = 1000;
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+ // 获得两个时间的毫秒时间差异
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+ long diff = endDate.getTime() - startTime.getTime();
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+ // 计算差多少天
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+ long day = diff / nd;
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+ // 计算差多少小时
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+ long hour = diff % nd / nh;
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+ // 计算差多少分钟
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+ long min = diff % nd % nh / nm;
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+ // 计算差多少秒//输出结果
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+ // long sec = diff % nd % nh % nm / ns;
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+ return day + "天" + hour + "小时" + min + "分钟";
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+ }
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+
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+ /**
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+ * 增加 LocalDateTime ==> Date
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+ */
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+ public static Date toDate(LocalDateTime temporalAccessor)
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+ {
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+ ZonedDateTime zdt = temporalAccessor.atZone(ZoneId.systemDefault());
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+ return Date.from(zdt.toInstant());
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+ }
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+
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+ /**
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+ * 增加 LocalDate ==> Date
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+ */
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+ public static Date toDate(LocalDate temporalAccessor)
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+ {
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+ LocalDateTime localDateTime = LocalDateTime.of(temporalAccessor, LocalTime.of(0, 0, 0));
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+ ZonedDateTime zdt = localDateTime.atZone(ZoneId.systemDefault());
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+ return Date.from(zdt.toInstant());
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+ }
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+
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+ // 返回过去7天的日期字符串列表,包含今天（自定义格式）
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+ public static List<String> getPreviousSevenDays(String pattern) {
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+ DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);
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+ List<String> dateStrings = new ArrayList<>(7);
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+ LocalDate today = LocalDate.now();
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+ for (int i = 6; i >= 0; i--) {
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+ dateStrings.add(today.minusDays(i).format(formatter));
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+ }
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+ return dateStrings;
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+ }
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+
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+
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+ /**
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+ * 获取上个月年月
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+ * @return
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+ */
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+ public static String getLastMonth(){
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+ // 获取当前日期
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+ LocalDate currentDate = LocalDate.now();
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+
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+ // 获取当前年份和上一个月份的组合（不包含具体的日）
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+ YearMonth lastMonthYearMonth = YearMonth.from(currentDate).minusMonths(1);
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+
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+ return lastMonthYearMonth.toString();
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+ }
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+}
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