diff --git a/src/main/java/com/alibaba/fastjson/JSONArray.java b/src/main/java/com/alibaba/fastjson/JSONArray.java
index b3693f2600..922cef80ec 100755
--- a/src/main/java/com/alibaba/fastjson/JSONArray.java
+++ b/src/main/java/com/alibaba/fastjson/JSONArray.java
@@ -30,6 +30,7 @@
 import static com.alibaba.fastjson.util.TypeUtils.castToTimestamp;
 
 import java.io.IOException;
+import java.io.ObjectInputStream;
 import java.io.Serializable;
 import java.lang.reflect.Type;
 import java.math.BigDecimal;
@@ -453,8 +454,15 @@ public int hashCode() {
         return this.list.hashCode();
     }
 
-    private void readObject(java.io.ObjectInputStream s) throws IOException, ClassNotFoundException {
-        s.defaultReadObject();
+    private void readObject(final java.io.ObjectInputStream in) throws IOException, ClassNotFoundException {
+        JSONObject.SecureObjectInputStream.ensureFields();
+        if (JSONObject.SecureObjectInputStream.fields != null && !JSONObject.SecureObjectInputStream.fields_error) {
+            ObjectInputStream secIn = new JSONObject.SecureObjectInputStream(in);
+            secIn.defaultReadObject();
+            return;
+        }
+
+        in.defaultReadObject();
         for (Object item : list) {
             if (item != null) {
                 ParserConfig.global.checkAutoType(item.getClass().getName(), null);
diff --git a/src/main/java/com/alibaba/fastjson/JSONObject.java b/src/main/java/com/alibaba/fastjson/JSONObject.java
index 350d66a117..4ab7ed4050 100755
--- a/src/main/java/com/alibaba/fastjson/JSONObject.java
+++ b/src/main/java/com/alibaba/fastjson/JSONObject.java
@@ -479,71 +479,19 @@ public Map<String, Object> getInnerMap() {
         return this.map;
     }
 
-    static Field[] fields;
-    static volatile boolean fields_error;
 
-    static void ensureFields() {
-        if (fields == null && !fields_error) {
-            try {
-                final Field[] declaredFields = ObjectInputStream.class.getDeclaredFields();
-                String[] fieldnames = new String[]{"bin", "passHandle", "handles", "curContext"};
-                Field[] array = new Field[fieldnames.length];
-                for (int i = 0; i < fieldnames.length; i++) {
-                    Field field = TypeUtils
-                            .getField(ObjectInputStream.class
-                                    , fieldnames[i]
-                                    , declaredFields
-                            );
-                    field.setAccessible(true);
-                    array[i] = field;
-                }
-                fields = array;
-            } catch (Throwable error) {
-                fields_error = true;
-            }
-        }
-    }
 
     private void readObject(final java.io.ObjectInputStream in) throws IOException, ClassNotFoundException {
-        ensureFields();
-        if (fields != null && !fields_error) {
-            ObjectInputStream secIn = new ObjectInputStream(in) {
-                protected Class<?> resolveClass(ObjectStreamClass desc)
-                throws IOException, ClassNotFoundException {
-                    String name = desc.getName();
-                    ParserConfig.global.checkAutoType(name, null);
-                    return super.resolveClass(desc);
-                }
-
-                protected Class<?> resolveProxyClass(String[] interfaces)
-                throws IOException, ClassNotFoundException {
-                    for (String interfacename : interfaces) {
-                        //检查是否处于黑名单
-                        ParserConfig.global.checkAutoType(interfacename, null);
-                    }
-                    return super.resolveProxyClass(interfaces);
-                }
-
-                //Hack:默认构造方法会调用这个方法，重写此方法使用反射还原部分关键属性
-                protected void readStreamHeader() throws IOException, StreamCorruptedException {
-                    try {
-                        for (int i = 0; i < fields.length; i++) {
-                            final Field field = fields[i];
-                            final Object value = field.get(in);
-                            field.set(this, value);
-                        }
-                    } catch (IllegalAccessException e) {
-                        fields_error = true;
-                    }
-                }
-            };
+        SecureObjectInputStream.ensureFields();
+        if (SecureObjectInputStream.fields != null && !SecureObjectInputStream.fields_error) {
+            ObjectInputStream secIn = new SecureObjectInputStream(in);
             secIn.defaultReadObject();
             return;
         }
 
         in.defaultReadObject();
-        for (Entry<String, Object> entry : map.entrySet()) {
-            final String key = entry.getKey();
+        for (Entry entry : map.entrySet()) {
+            final Object key = entry.getKey();
             if (key != null) {
                 ParserConfig.global.checkAutoType(key.getClass().getName(), null);
             }
@@ -554,4 +502,65 @@ protected void readStreamHeader() throws IOException, StreamCorruptedException {
             }
         }
     }
+
+    static class SecureObjectInputStream extends ObjectInputStream {
+        static Field[] fields;
+        static volatile boolean fields_error;
+
+        static void ensureFields() {
+            if (fields == null && !fields_error) {
+                try {
+                    final Field[] declaredFields = ObjectInputStream.class.getDeclaredFields();
+                    String[] fieldnames = new String[]{"bin", "passHandle", "handles", "curContext"};
+                    Field[] array = new Field[fieldnames.length];
+                    for (int i = 0; i < fieldnames.length; i++) {
+                        Field field = TypeUtils
+                                .getField(ObjectInputStream.class
+                                        , fieldnames[i]
+                                        , declaredFields
+                                );
+                        field.setAccessible(true);
+                        array[i] = field;
+                    }
+                    fields = array;
+                } catch (Throwable error) {
+                    fields_error = true;
+                }
+            }
+        }
+
+        public SecureObjectInputStream(ObjectInputStream in) throws IOException {
+            super(in);
+            try {
+                for (int i = 0; i < fields.length; i++) {
+                    final Field field = fields[i];
+                    final Object value = field.get(in);
+                    field.set(this, value);
+                }
+            } catch (IllegalAccessException e) {
+                fields_error = true;
+            }
+        }
+
+        protected Class<?> resolveClass(ObjectStreamClass desc)
+        throws IOException, ClassNotFoundException {
+            String name = desc.getName();
+            ParserConfig.global.checkAutoType(name, null);
+            return super.resolveClass(desc);
+        }
+
+        protected Class<?> resolveProxyClass(String[] interfaces)
+        throws IOException, ClassNotFoundException {
+            for (String interfacename : interfaces) {
+                //检查是否处于黑名单
+                ParserConfig.global.checkAutoType(interfacename, null);
+            }
+            return super.resolveProxyClass(interfaces);
+        }
+
+        //Hack:默认构造方法会调用这个方法，重写此方法使用反射还原部分关键属性
+        protected void readStreamHeader() throws IOException, StreamCorruptedException {
+
+        }
+    }
 }
diff --git a/src/test/java/com/alibaba/json/bvt/JSONObjectTest_readObject.java b/src/test/java/com/alibaba/json/bvt/JSONObjectTest_readObject.java
index 7d538a40de..d2bbbbfb3b 100644
--- a/src/test/java/com/alibaba/json/bvt/JSONObjectTest_readObject.java
+++ b/src/test/java/com/alibaba/json/bvt/JSONObjectTest_readObject.java
@@ -1,5 +1,6 @@
 package com.alibaba.json.bvt;
 
+import com.alibaba.fastjson.JSON;
 import com.alibaba.fastjson.JSONObject;
 import junit.framework.TestCase;
 
@@ -28,4 +29,42 @@ public void test_0() throws Exception {
         assertEquals(JSONObject.class, obj.getClass());
         assertEquals(jsonObject, obj);
     }
+
+    public void test_2() throws Exception {
+        JSONObject jsonObject = JSON.parseObject("{123:345}");
+
+        ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
+        ObjectOutputStream objOut = new ObjectOutputStream(bytesOut);
+        objOut.writeObject(jsonObject);
+        objOut.flush();
+
+        byte[] bytes = bytesOut.toByteArray();
+
+        ByteArrayInputStream bytesIn = new ByteArrayInputStream(bytes);
+        ObjectInputStream objIn = new ObjectInputStream(bytesIn);
+
+        Object obj = objIn.readObject();
+
+        assertEquals(JSONObject.class, obj.getClass());
+        assertEquals(jsonObject, obj);
+    }
+
+    public void test_3() throws Exception {
+        JSONObject jsonObject = JSON.parseObject("{123:345,\"items\":[1,2,3,4]}");
+
+        ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
+        ObjectOutputStream objOut = new ObjectOutputStream(bytesOut);
+        objOut.writeObject(jsonObject);
+        objOut.flush();
+
+        byte[] bytes = bytesOut.toByteArray();
+
+        ByteArrayInputStream bytesIn = new ByteArrayInputStream(bytes);
+        ObjectInputStream objIn = new ObjectInputStream(bytesIn);
+
+        Object obj = objIn.readObject();
+
+        assertEquals(JSONObject.class, obj.getClass());
+        assertEquals(jsonObject, obj);
+    }
 }