修复JSONUtil.parse()溢出问题

hutool-json/src/test/java/cn/hutool/json/Issue3289Test.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2023 looly(loolly@aliyun.com)
+ * Hutool is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ *          http://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
+
+package cn.hutool.json;
+
+import org.junit.Test;
+
+public class Issue3289Test {
+	@Test(expected = JSONException.class)
+	public void parseTest() {
+		final String s = "{\"a\":1,[6E962756779]}";
+		JSONUtil.parse(s);
+	}
+}