From 34e4efcc3c4a132c0f14efe03b0267d40c00df93 Mon Sep 17 00:00:00 2001
From: Looly <loolly@gmail.com>
Date: Thu, 9 Jan 2020 10:23:35 +0800
Subject: [PATCH] fix mul

---
 CHANGELOG.md                                               | 2 ++
 .../src/main/java/cn/hutool/core/util/NumberUtil.java      | 4 +---
 .../src/test/java/cn/hutool/core/util/NumberUtilTest.java  | 7 +++++++
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 64fde0d48..862a73656 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,8 +12,10 @@
 * 【core 】     增加Alias注解
 * 【core 】     修正NumberChineseFormatter和NumberWordFormatter（类名拼写错误）
 * 【all  】     修正equals，避免可能存在的空指针问题（pr#692@Github）
+* 【core  】    提供一个自带默认值的Map（pr#87@Gitee）
 
 ### Bug修复
+* 【core 】     修复NumberUtil.mul中null的结果错误问题（issue#I17Y4J@Gitee）
 
 -------------------------------------------------------------------------------------------------------------
 
diff --git a/hutool-core/src/main/java/cn/hutool/core/util/NumberUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/NumberUtil.java
index 3426d1393..cd0ab0222 100644
--- a/hutool-core/src/main/java/cn/hutool/core/util/NumberUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/util/NumberUtil.java
@@ -410,9 +410,7 @@ public class NumberUtil {
 		BigDecimal result = new BigDecimal(null == value ? "0" : value.toString());
 		for (int i = 1; i < values.length; i++) {
 			value = values[i];
-			if (null != value) {
-				result = result.multiply(new BigDecimal(value.toString()));
-			}
+			result = result.multiply(new BigDecimal(null == value ? "0" : value.toString()));
 		}
 		return result;
 	}
diff --git a/hutool-core/src/test/java/cn/hutool/core/util/NumberUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/util/NumberUtilTest.java
index 75b63e254..14060cc47 100644
--- a/hutool-core/src/test/java/cn/hutool/core/util/NumberUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/util/NumberUtilTest.java
@@ -3,6 +3,7 @@ package cn.hutool.core.util;
 import java.math.BigDecimal;
 import java.math.RoundingMode;
 
+import cn.hutool.core.lang.Console;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -246,4 +247,10 @@ public class NumberUtilTest {
 		factorial = NumberUtil.factorial(5, 1);
 		Assert.assertEquals(120, factorial);
 	}
+
+	@Test
+	public void mulTest(){
+		final BigDecimal mul = NumberUtil.mul(new BigDecimal("10"), null);
+		Assert.assertEquals(BigDecimal.ZERO, mul);
+	}
 }