From 5bb4ff9c40aa14cd417fc553994bcca9ef03f203 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=8D=E5=BF=98=E5=88=9D=E5=BF=83?= <bwcx_jzy@163.com>
Date: Wed, 9 Dec 2020 18:26:45 +0800
Subject: [PATCH 1/2] =?UTF-8?q?cn.hutool.core.collection.CollUtil#addAll(j?=
 =?UTF-8?q?ava.util.Collection<T>,=20java.lang.Iterable<T>)=20=E5=88=A4?=
 =?UTF-8?q?=E6=96=AD=E7=A9=BA=E6=8C=87=E9=92=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../src/main/java/cn/hutool/core/collection/CollUtil.java      | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java b/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
index aa73d40f5..870594aa1 100644
--- a/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
@@ -2108,6 +2108,9 @@ public class CollUtil {
 	 * @return 原集合
 	 */
 	public static <T> Collection<T> addAll(Collection<T> collection, Iterable<T> iterable) {
+		if(iterable == null){
+			return collection;
+		}
 		return addAll(collection, iterable.iterator());
 	}
 

From 0ee10efa041d9e0e5bf83acf85ae0a1ed914c50e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=8D=E5=BF=98=E5=88=9D=E5=BF=83?= <bwcx_jzy@163.com>
Date: Wed, 9 Dec 2020 18:27:01 +0800
Subject: [PATCH 2/2] =?UTF-8?q?cn.hutool.core.collection.CollUtil#addAll(j?=
 =?UTF-8?q?ava.util.Collection<T>,=20java.lang.Iterable<T>)=20=E5=88=A4?=
 =?UTF-8?q?=E6=96=AD=E7=A9=BA=E6=8C=87=E9=92=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../src/main/java/cn/hutool/core/collection/CollUtil.java       | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java b/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
index 870594aa1..7f629bc0f 100644
--- a/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
@@ -2108,7 +2108,7 @@ public class CollUtil {
 	 * @return 原集合
 	 */
 	public static <T> Collection<T> addAll(Collection<T> collection, Iterable<T> iterable) {
-		if(iterable == null){
+		if (iterable == null) {
 			return collection;
 		}
 		return addAll(collection, iterable.iterator());