diff --git a/CHANGELOG.md b/CHANGELOG.md
index b3462514e..c0617104d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 
 -------------------------------------------------------------------------------------------------------------
 
-# 5.7.14 (2021-09-25)
+# 5.7.14 (2021-09-27)
 
 ### 🐣新特性
 * 【extra  】     修复HttpCookie设置cookies的方法，不符合RFC6265规范问题（issue#I4B70D@Gitee）
@@ -16,6 +16,7 @@
 ### 🐞Bug修复
 * 【http   】     修复HttpCookie设置cookies的方法，不符合RFC6265规范问题（pr#418@Gitee）
 * 【http   】     修复Extractor中filter无效问题
+* 【json   】     修复JSONGetter.getJSONArray判断null的问题（issue#I4C15H@Gitee）
 
 -------------------------------------------------------------------------------------------------------------
 
diff --git a/hutool-core/src/main/java/cn/hutool/core/codec/BCD.java b/hutool-core/src/main/java/cn/hutool/core/codec/BCD.java
index 5259405e1..6600133cc 100644
--- a/hutool-core/src/main/java/cn/hutool/core/codec/BCD.java
+++ b/hutool-core/src/main/java/cn/hutool/core/codec/BCD.java
@@ -3,7 +3,7 @@ package cn.hutool.core.codec;
 import cn.hutool.core.lang.Assert;
 
 /**
- * BCD码（Binary-Coded Decimal‎）亦称二进码十进数或二-十进制代码<br>
+ * BCD码（Binary-Coded Decimal）亦称二进码十进数或二-十进制代码<br>
  * BCD码这种编码形式利用了四个位元来储存一个十进制的数码，使二进制和十进制之间的转换得以快捷的进行<br>
  * see http://cuisuqiang.iteye.com/blog/1429956
  * @author Looly
diff --git a/hutool-core/src/test/java/cn/hutool/core/collection/IterUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/collection/IterUtilTest.java
index bc3f7b5f7..98aaddab2 100644
--- a/hutool-core/src/test/java/cn/hutool/core/collection/IterUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/collection/IterUtilTest.java
@@ -1,9 +1,16 @@
 package cn.hutool.core.collection;
 
+import lombok.AllArgsConstructor;
+import lombok.Data;
 import org.junit.Assert;
 import org.junit.Test;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 
 /**
  * {@link IterUtil} 单元测试
@@ -83,29 +90,10 @@ public class IterUtilTest {
 		Assert.assertEquals(expectedMap, testMap);
 	}
 
+	@Data
+	@AllArgsConstructor
 	public static class Car {
 		private String carNumber;
 		private String carName;
-
-		public Car(String carNumber, String carName) {
-			this.carNumber = carNumber;
-			this.carName = carName;
-		}
-
-		public String getCarNumber() {
-			return carNumber;
-		}
-
-		public void setCarNumber(String carNumber) {
-			this.carNumber = carNumber;
-		}
-
-		public String getCarName() {
-			return carName;
-		}
-
-		public void setCarName(String carName) {
-			this.carName = carName;
-		}
 	}
 }
diff --git a/hutool-json/src/main/java/cn/hutool/json/JSONGetter.java b/hutool-json/src/main/java/cn/hutool/json/JSONGetter.java
index 06e79aeed..a7135b1dc 100644
--- a/hutool-json/src/main/java/cn/hutool/json/JSONGetter.java
+++ b/hutool-json/src/main/java/cn/hutool/json/JSONGetter.java
@@ -34,7 +34,7 @@ public interface JSONGetter<K> extends OptNullBasicTypeFromObjectGetter<K> {
 	 * @return true 无此key或值为{@code null}或{@link JSONNull#NULL}返回{@code false}，其它返回{@code true}
 	 */
 	default boolean isNull(K key) {
-		return JSONNull.NULL.equals(this.getObj(key));
+		return JSONUtil.isNull(this.getObj(key));
 	}
 
 	/**
@@ -69,7 +69,7 @@ public interface JSONGetter<K> extends OptNullBasicTypeFromObjectGetter<K> {
 	 */
 	default JSONArray getJSONArray(K key) {
 		final Object object = this.getObj(key);
-		if (null == object) {
+		if (JSONUtil.isNull(object)) {
 			return null;
 		}
 
@@ -88,7 +88,7 @@ public interface JSONGetter<K> extends OptNullBasicTypeFromObjectGetter<K> {
 	 */
 	default JSONObject getJSONObject(K key) {
 		final Object object = this.getObj(key);
-		if (null == object) {
+		if (JSONUtil.isNull(object)) {
 			return null;
 		}
 
@@ -117,7 +117,7 @@ public interface JSONGetter<K> extends OptNullBasicTypeFromObjectGetter<K> {
 	default Date getDate(K key, Date defaultValue) {
 		// 默认转换
 		final Object obj = getObj(key);
-		if (null == obj) {
+		if (JSONUtil.isNull(obj)) {
 			return defaultValue;
 		}
 		if (obj instanceof Date) {
@@ -151,7 +151,7 @@ public interface JSONGetter<K> extends OptNullBasicTypeFromObjectGetter<K> {
 	default LocalDateTime getLocalDateTime(K key, LocalDateTime defaultValue) {
 		// 默认转换
 		final Object obj = getObj(key);
-		if (null == obj) {
+		if (JSONUtil.isNull(obj)) {
 			return defaultValue;
 		}
 		if (obj instanceof LocalDateTime) {
@@ -202,7 +202,7 @@ public interface JSONGetter<K> extends OptNullBasicTypeFromObjectGetter<K> {
 	 */
 	default <T> T get(K key, Class<T> type, boolean ignoreError) throws ConvertException {
 		final Object value = this.getObj(key);
-		if (null == value) {
+		if (JSONUtil.isNull(value)) {
 			return null;
 		}
 		return JSONConverter.jsonConvert(type, value, ignoreError);