diff --git a/core/src/main/java/com/alibaba/fastjson2/reader/ObjectReaderImplObject.java b/core/src/main/java/com/alibaba/fastjson2/reader/ObjectReaderImplObject.java
index d23a43834..829f37a06 100644
--- a/core/src/main/java/com/alibaba/fastjson2/reader/ObjectReaderImplObject.java
+++ b/core/src/main/java/com/alibaba/fastjson2/reader/ObjectReaderImplObject.java
@@ -102,8 +102,8 @@ public final class ObjectReaderImplObject
                                         contextClass = classLoader.loadClass(typeName);
                                     } catch (ClassNotFoundException ignored) {
                                     }
-
-                                    if (!objectClass.equals(contextClass)) {
+                                    //明确contextClass类型与objectClass不一致时才更改reader
+                                    if (contextClass != null && !objectClass.equals(contextClass)) {
                                         autoTypeObjectReader = context.getObjectReader(contextClass);
                                     }
                                 }
diff --git a/core/src/test/java/com/alibaba/fastjson2/issues_3200/Issue3208.java b/core/src/test/java/com/alibaba/fastjson2/issues_3200/Issue3208.java
new file mode 100644
index 000000000..4d6ad314c
--- /dev/null
+++ b/core/src/test/java/com/alibaba/fastjson2/issues_3200/Issue3208.java
@@ -0,0 +1,27 @@
+package com.alibaba.fastjson2.issues_3200;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.serializer.SerializeConfig;
+import com.alibaba.fastjson.serializer.SerializerFeature;
+import com.google.common.collect.ImmutableMap;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+
+public class Issue3208 {
+    @Test
+    public void testArray() {
+        byte[] bytes = new byte[]{1, 2, 3};
+        String jsonString = JSON.toJSONString(bytes, SerializerFeature.WriteClassName);
+        byte[] bytes1 = (byte[]) JSON.parse(jsonString);
+        Assertions.assertTrue(Arrays.equals(bytes, bytes1));
+    }
+
+    @Test
+    public void testObjectArray() {
+        byte[] jsonBytes = JSON.toJSONBytes(new Object[]{JSON.toJSONString(ImmutableMap.of("a", 1))}, new SerializeConfig(true), JSON.DEFAULT_GENERATE_FEATURE, SerializerFeature.WriteClassName);
+        Object parsed = JSON.parse(new String(jsonBytes));
+        Assertions.assertNotNull(parsed);
+    }
+}