From 4d492bcee93f8992604a0b7d0c7db39a478612f5 Mon Sep 17 00:00:00 2001
From: wenshao <shaojin.wensj@alibaba-inc.com>
Date: Wed, 1 Jan 2025 20:20:48 +0800
Subject: [PATCH] JSONObject#to support Void.class, for issue #2879

---
 .../java/com/alibaba/fastjson2/JSONObject.java   |  4 ++++
 .../alibaba/fastjson2/issues_2800/Issue2879.java | 16 ++++++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 core/src/test/java/com/alibaba/fastjson2/issues_2800/Issue2879.java

diff --git a/core/src/main/java/com/alibaba/fastjson2/JSONObject.java b/core/src/main/java/com/alibaba/fastjson2/JSONObject.java
index c0740475f7..54bb228ed0 100644
--- a/core/src/main/java/com/alibaba/fastjson2/JSONObject.java
+++ b/core/src/main/java/com/alibaba/fastjson2/JSONObject.java
@@ -1149,6 +1149,10 @@ public <T> T to(Class<T> clazz, JSONReader.Feature... features) {
             return (T) this;
         }
 
+        if (clazz == Void.class || clazz == void.class) {
+            return null;
+        }
+
         ObjectReaderProvider provider = JSONFactory.getDefaultObjectReaderProvider();
         ObjectReader<T> objectReader = provider.getObjectReader(clazz, fieldBased);
         return objectReader.createInstance(this, featuresValue);
diff --git a/core/src/test/java/com/alibaba/fastjson2/issues_2800/Issue2879.java b/core/src/test/java/com/alibaba/fastjson2/issues_2800/Issue2879.java
new file mode 100644
index 0000000000..3c76bb27a0
--- /dev/null
+++ b/core/src/test/java/com/alibaba/fastjson2/issues_2800/Issue2879.java
@@ -0,0 +1,16 @@
+package com.alibaba.fastjson2.issues_2800;
+
+import com.alibaba.fastjson2.JSON;
+import com.alibaba.fastjson2.JSONObject;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+public class Issue2879 {
+    @Test
+    public void test() {
+        JSONObject object = JSON.parseObject("{}");
+        assertNull(object.to(Void.class));
+        assertNull(object.to(void.class));
+    }
+}