diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0b36313c0..829b40ab8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,7 +18,8 @@
 ### 🐞Bug修复
 * 【db     】     修复count方法丢失参数问题(issue#I3VBSL@Gitee)
 * 【db     】     修复SpringUtil工具在`@PostConstruct` 注解标注的方法下失效问题(pr#341@Gitee)
-* 【db     】     修复JSONUtil.parse方法未判断有序问题(issue#I3VHVY@Gitee)
+* 【json   】     修复JSONUtil.parse方法未判断有序问题(issue#I3VHVY@Gitee)
+* 【json   】     修复JSONArray.put越界无法加入问题(issue#I3VMLU@Gitee)
 
 -------------------------------------------------------------------------------------------------------------
 
diff --git a/hutool-core/src/main/java/cn/hutool/core/util/RandomUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/RandomUtil.java
index c819bd0ee..d5e6e06b4 100644
--- a/hutool-core/src/main/java/cn/hutool/core/util/RandomUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/util/RandomUtil.java
@@ -93,8 +93,8 @@ public class RandomUtil {
 	 *
 	 * @param seed 随机数种子
 	 * @return {@link SecureRandom}
-	 * @since 5.5.2
 	 * @see #createSecureRandom(byte[])
+	 * @since 5.5.2
 	 */
 	public static SecureRandom getSecureRandom(byte[] seed) {
 		return createSecureRandom(seed);
@@ -119,7 +119,7 @@ public class RandomUtil {
 		} catch (NoSuchAlgorithmException e) {
 			throw new UtilException(e);
 		}
-		if(null != seed){
+		if (null != seed) {
 			random.setSeed(seed);
 		}
 		return random;
@@ -163,6 +163,7 @@ public class RandomUtil {
 	 * 获得随机数int值
 	 *
 	 * @return 随机数
+	 * @see Random#nextInt()
 	 */
 	public static int randomInt() {
 		return getRandom().nextInt();
@@ -173,6 +174,7 @@ public class RandomUtil {
 	 *
 	 * @param limit 限制随机数的范围，不包括这个数
 	 * @return 随机数
+	 * @see Random#nextInt(int)
 	 */
 	public static int randomInt(int limit) {
 		return getRandom().nextInt(limit);
@@ -184,6 +186,7 @@ public class RandomUtil {
 	 * @param min 最小数（包含）
 	 * @param max 最大数（不包含）
 	 * @return 随机数
+	 * @see ThreadLocalRandom#nextLong(long, long)
 	 * @since 3.3.0
 	 */
 	public static long randomLong(long min, long max) {
@@ -194,6 +197,7 @@ public class RandomUtil {
 	 * 获得随机数
 	 *
 	 * @return 随机数
+	 * @see ThreadLocalRandom#nextLong()
 	 * @since 3.3.0
 	 */
 	public static long randomLong() {
@@ -205,6 +209,7 @@ public class RandomUtil {
 	 *
 	 * @param limit 限制随机数的范围，不包括这个数
 	 * @return 随机数
+	 * @see ThreadLocalRandom#nextLong(long)
 	 */
 	public static long randomLong(long limit) {
 		return getRandom().nextLong(limit);
@@ -216,6 +221,7 @@ public class RandomUtil {
 	 * @param min 最小数（包含）
 	 * @param max 最大数（不包含）
 	 * @return 随机数
+	 * @see ThreadLocalRandom#nextDouble(double, double)
 	 * @since 3.3.0
 	 */
 	public static double randomDouble(double min, double max) {
@@ -240,6 +246,7 @@ public class RandomUtil {
 	 * 获得随机数[0, 1)
 	 *
 	 * @return 随机数
+	 * @see ThreadLocalRandom#nextDouble()
 	 * @since 3.3.0
 	 */
 	public static double randomDouble() {
@@ -263,6 +270,7 @@ public class RandomUtil {
 	 *
 	 * @param limit 限制随机数的范围，不包括这个数
 	 * @return 随机数
+	 * @see ThreadLocalRandom#nextDouble(double)
 	 * @since 3.3.0
 	 */
 	public static double randomDouble(double limit) {
diff --git a/hutool-json/src/main/java/cn/hutool/json/JSONArray.java b/hutool-json/src/main/java/cn/hutool/json/JSONArray.java
index 5da4ab9a3..d6e15f077 100644
--- a/hutool-json/src/main/java/cn/hutool/json/JSONArray.java
+++ b/hutool-json/src/main/java/cn/hutool/json/JSONArray.java
@@ -457,6 +457,9 @@ public class JSONArray implements JSON, JSONGetter<Integer>, List<Object>, Rando
 	 */
 	@Override
 	public Object set(int index, Object element) {
+		if(index > size()){
+			add(index, element);
+		}
 		return this.rawList.set(index, JSONUtil.wrap(element, this.config));
 	}
 
diff --git a/hutool-json/src/test/java/cn/hutool/json/JSONArrayTest.java b/hutool-json/src/test/java/cn/hutool/json/JSONArrayTest.java
index f05c6162d..154948ed3 100644
--- a/hutool-json/src/test/java/cn/hutool/json/JSONArrayTest.java
+++ b/hutool-json/src/test/java/cn/hutool/json/JSONArrayTest.java
@@ -23,7 +23,7 @@ import java.util.Map;
 
 /**
  * JSONArray单元测试
- * 
+ *
  * @author Looly
  *
  */
@@ -112,34 +112,34 @@ public class JSONArrayTest {
 	@Test
 	public void toListTest2() {
 		String jsonArr = "[{\"id\":111,\"name\":\"test1\"},{\"id\":112,\"name\":\"test2\"}]";
-		
+
 		JSONArray array = JSONUtil.parseArray(jsonArr);
 		List<User> userList = JSONUtil.toList(array, User.class);
-		
+
 		Assert.assertFalse(userList.isEmpty());
 		Assert.assertSame(User.class, userList.get(0).getClass());
-		
+
 		Assert.assertEquals(Integer.valueOf(111), userList.get(0).getId());
 		Assert.assertEquals(Integer.valueOf(112), userList.get(1).getId());
-		
+
 		Assert.assertEquals("test1", userList.get(0).getName());
 		Assert.assertEquals("test2", userList.get(1).getName());
 	}
-	
+
 	@Test
 	public void toDictListTest() {
 		String jsonArr = "[{\"id\":111,\"name\":\"test1\"},{\"id\":112,\"name\":\"test2\"}]";
-		
+
 		JSONArray array = JSONUtil.parseArray(jsonArr);
-		
+
 		List<Dict> list = JSONUtil.toList(array, Dict.class);
-		
+
 		Assert.assertFalse(list.isEmpty());
 		Assert.assertSame(Dict.class, list.get(0).getClass());
-		
+
 		Assert.assertEquals(Integer.valueOf(111), list.get(0).getInt("id"));
 		Assert.assertEquals(Integer.valueOf(112), list.get(1).getInt("id"));
-		
+
 		Assert.assertEquals("test1", list.get(0).getStr("name"));
 		Assert.assertEquals("test2", list.get(1).getStr("name"));
 	}
@@ -174,7 +174,7 @@ public class JSONArrayTest {
 		String json = "[['aaa',{'akey':'avalue','bkey':'bvalue'}]]";
 		JSONArray ja = JSONUtil.parseArray(json);
 
-		List<List<KeyBean>> list = ja.toBean(new TypeReference<List<List<KeyBean>>>() {});
+		ja.toBean(new TypeReference<List<List<KeyBean>>>() {});
 	}
 
 	@Test
@@ -211,6 +211,14 @@ public class JSONArrayTest {
 		Assert.assertEquals("b", JSONUtil.getByPath(jsonArray, "[1].name"));
 	}
 
+	@Test
+	public void putTest(){
+		final JSONArray jsonArray = new JSONArray();
+		jsonArray.put(3, "test");
+		// 第三个位置插入值，0~2都是null
+		Assert.assertEquals(4, jsonArray.size());
+	}
+
 	private static Map<String, String> buildMap(String id, String parentId, String name) {
 		Map<String, String> map = new HashMap<>();
 		map.put("id", id);