fix: 任务中心,执行后返回的最近执行时间

+package org.thingsboard.server.dao.util.yunteng.task;
+
+import java.time.LocalDateTime;
+import java.time.ZoneOffset;
+
+public class RelativeDateHandler {
+  private static final long ONE_MINUTE = 60000L;
+  private static final long ONE_HOUR = 3600000L;
+  private static final long ONE_DAY = 86400000L;
+  private static final long ONE_WEEK = 604800000L;
+
+  private static final String ONE_SECOND_AGO = "秒前";
+  private static final String ONE_MINUTE_AGO = "分钟前";
+  private static final String ONE_HOUR_AGO = "小时前";
+  private static final String ONE_DAY_AGO = "天前";
+  private static final String ONE_MONTH_AGO = "月前";
+  private static final String ONE_YEAR_AGO = "年前";
+
+  public static String format(LocalDateTime date) {
+    Long currentTime = LocalDateTime.now().toInstant(ZoneOffset.of("+8")).toEpochMilli();
+    Long executeTime = date.toInstant(ZoneOffset.of("+8")).toEpochMilli();
+    long delta = currentTime - executeTime;
+    if (delta < ONE_MINUTE) {
+      long seconds = toSeconds(delta);
+      return seconds <= 0 ? "刚刚" : seconds + ONE_SECOND_AGO;
+    }
+    if (delta < 45L * ONE_MINUTE) {
+      long minutes = toMinutes(delta);
+      return (minutes <= 0 ? 1 : minutes) + ONE_MINUTE_AGO;
+    }
+    if (delta < 24L * ONE_HOUR) {
+      long hours = toHours(delta);
+      return (hours <= 0 ? 1 : hours) + ONE_HOUR_AGO;
+    }
+    if (delta < 48L * ONE_HOUR) {
+      return "昨天";
+    }
+    if (delta < 30L * ONE_DAY) {
+      long days = toDays(delta);
+      return (days <= 0 ? 1 : days) + ONE_DAY_AGO;
+    }
+    if (delta < 12L * 4L * ONE_WEEK) {
+      long months = toMonths(delta);
+      return (months <= 0 ? 1 : months) + ONE_MONTH_AGO;
+    } else {
+      long years = toYears(delta);
+      return (years <= 0 ? 1 : years) + ONE_YEAR_AGO;
+    }
+  }
+
+  private static long toSeconds(long date) {
+    return date / 1000L;
+  }
+
+  private static long toMinutes(long date) {
+    return toSeconds(date) / 60L;
+  }
+
+  private static long toHours(long date) {
+    return toMinutes(date) / 60L;
+  }
+
+  private static long toDays(long date) {
+    return toHours(date) / 24L;
+  }
+
+  private static long toMonths(long date) {
+    return toDays(date) / 30L;
+  }
+
+  private static long toYears(long date) {
+    return toMonths(date) / 365L;
+  }
+
+  public static void main(String[] args) {}
+}