From c19f43837fca062308a4b12ff41193c453a16591 Mon Sep 17 00:00:00 2001
From: Looly <loolly@gmail.com>
Date: Thu, 20 Aug 2020 17:14:42 +0800
Subject: [PATCH] add toEpochMilli

---
 CHANGELOG.md                                         |  1 +
 .../java/cn/hutool/core/date/LocalDateTimeUtil.java  | 12 ++++++++++++
 .../cn/hutool/core/date/TemporalAccessorUtil.java    | 11 +++++++++++
 3 files changed, 24 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index fda811d8f..a803d4e63 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@
 * 【core  】     StrUtil增加firstNonXXX方法（issue#1020@Github）
 * 【core  】     BeanCopier修改规则，可选bean拷贝空字段报错问题（pr#160@Gitee）
 * 【http  】     HttpUtil增加downloadFileFromUrl（pr#1023@Github）
+* 【core  】     增加toEpochMilli方法
 
 ### Bug修复#
 * 【poi   】     修复ExcelBase.isXlsx方法判断问题（issue#I1S502@Gitee）
diff --git a/hutool-core/src/main/java/cn/hutool/core/date/LocalDateTimeUtil.java b/hutool-core/src/main/java/cn/hutool/core/date/LocalDateTimeUtil.java
index e22ddf2cd..4b5c29eb1 100644
--- a/hutool-core/src/main/java/cn/hutool/core/date/LocalDateTimeUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/date/LocalDateTimeUtil.java
@@ -415,4 +415,16 @@ public class LocalDateTimeUtil {
 	public static LocalDateTime endOfDay(LocalDateTime time) {
 		return time.with(LocalTime.of(23, 59, 59, 999_999_999));
 	}
+
+	/**
+	 * {@link TemporalAccessor}转换为 时间戳（从1970-01-01T00:00:00Z开始的毫秒数）
+	 *
+	 * @param temporalAccessor Date对象
+	 * @return {@link Instant}对象
+	 * @since 5.4.1
+	 * @see TemporalAccessorUtil#toEpochMilli(TemporalAccessor)
+	 */
+	public static long toEpochMilli(TemporalAccessor temporalAccessor) {
+		return TemporalAccessorUtil.toEpochMilli(temporalAccessor);
+	}
 }
diff --git a/hutool-core/src/main/java/cn/hutool/core/date/TemporalAccessorUtil.java b/hutool-core/src/main/java/cn/hutool/core/date/TemporalAccessorUtil.java
index 8df054c6d..d666301cb 100644
--- a/hutool-core/src/main/java/cn/hutool/core/date/TemporalAccessorUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/date/TemporalAccessorUtil.java
@@ -76,6 +76,17 @@ public class TemporalAccessorUtil {
 		return format(time, formatter);
 	}
 
+	/**
+	 * {@link TemporalAccessor}转换为 时间戳（从1970-01-01T00:00:00Z开始的毫秒数）
+	 *
+	 * @param temporalAccessor Date对象
+	 * @return {@link Instant}对象
+	 * @since 5.4.1
+	 */
+	public static long toEpochMilli(TemporalAccessor temporalAccessor) {
+		return toInstant(temporalAccessor).toEpochMilli();
+	}
+
 	/**
 	 * {@link TemporalAccessor}转换为 {@link Instant}对象
 	 *