From f2b347dc9dfb0c8d3cb0f811f612fe71db9c259c Mon Sep 17 00:00:00 2001
From: misakacoder <210086826@qq.com>
Date: Tue, 5 Mar 2024 13:14:02 +0800
Subject: [PATCH] fix 3506

---
 .../main/java/cn/hutool/json/JSONUtil.java    |  5 ++++
 .../java/cn/hutool/json/Issue3506Test.java    | 30 +++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 hutool-json/src/test/java/cn/hutool/json/Issue3506Test.java

diff --git a/hutool-json/src/main/java/cn/hutool/json/JSONUtil.java b/hutool-json/src/main/java/cn/hutool/json/JSONUtil.java
index 80d56f111..baf0e65f6 100755
--- a/hutool-json/src/main/java/cn/hutool/json/JSONUtil.java
+++ b/hutool-json/src/main/java/cn/hutool/json/JSONUtil.java
@@ -796,6 +796,11 @@ public class JSONUtil {
 				return object.toString();
 			}
 
+			// Class类型保存类名
+			if (object instanceof Class<?>) {
+				return ((Class<?>) object).getName();
+			}
+
 			// Java内部类不做转换
 			if (ClassUtil.isJdkClass(object.getClass())) {
 				return object.toString();
diff --git a/hutool-json/src/test/java/cn/hutool/json/Issue3506Test.java b/hutool-json/src/test/java/cn/hutool/json/Issue3506Test.java
new file mode 100644
index 000000000..70f128d3c
--- /dev/null
+++ b/hutool-json/src/test/java/cn/hutool/json/Issue3506Test.java
@@ -0,0 +1,30 @@
+package cn.hutool.json;
+
+import lombok.Data;
+import org.junit.Test;
+
+/**
+ * https://github.com/dromara/hutool/issues/3506
+ */
+public class Issue3506Test {
+
+	@Test
+	public void test3506() {
+		Languages languages = new Languages();
+		languages.setLanguageType(Java.class);
+		String hutoolJSONString = JSONUtil.toJsonStr(languages);
+		System.out.println(hutoolJSONString);
+		System.out.println(JSONUtil.toBean(hutoolJSONString, Languages.class));
+	}
+
+	@Data
+	public static class Languages {
+		private Class<? extends Language> languageType;
+	}
+
+	public interface Language {
+	}
+
+	public static class Java implements Language {
+	}
+}