diff --git a/src/org/redkale/convert/ObjectDecoder.java b/src/org/redkale/convert/ObjectDecoder.java
index 539da6f50..b1b266dee 100644
--- a/src/org/redkale/convert/ObjectDecoder.java
+++ b/src/org/redkale/convert/ObjectDecoder.java
@@ -222,9 +222,10 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
      */
     @Override
     public T convertFrom(final R in) {
-        final String clazz = in.readObjectB(typeClass);
+        R objin = objectReader(in);
+        final String clazz = objin.readObjectB(typeClass);
         if (clazz == null) return null;
-        if (!clazz.isEmpty()) return (T) factory.loadDecoder(factory.getEntityAlias(clazz)).convertFrom(in);
+        if (!clazz.isEmpty()) return (T) factory.loadDecoder(factory.getEntityAlias(clazz)).convertFrom(objin);
         if (!this.inited) {
             synchronized (lock) {
                 try {
@@ -242,17 +243,17 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
         if (this.creatorConstructorMembers == null) {  //空构造函数
             final T result = this.creator == null ? null : this.creator.create();
             boolean first = true;
-            while (hasNext(in, first)) {
-                DeMember member = in.readFieldName(members);
-                in.readBlank();
+            while (hasNext(objin, first)) {
+                DeMember member = objin.readFieldName(members);
+                objin.readBlank();
                 if (member == null) {
-                    in.skipValue(); //跳过不存在的属性的值
+                    objin.skipValue(); //跳过不存在的属性的值
                 } else {
-                    readMemberValue(in, member, result, first);
+                    readMemberValue(objin, member, result, first);
                 }
                 first = false;
             }
-            in.readObjectE(typeClass);
+            objin.readObjectE(typeClass);
             return result;
         } else {  //带参数的构造函数
             final DeMember<R, T, ?>[] fields = this.creatorConstructorMembers;
@@ -260,13 +261,13 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
             final Object[][] otherParams = new Object[this.members.length][2];
             int oc = 0;
             boolean first = true;
-            while (hasNext(in, first)) {
-                DeMember member = in.readFieldName(members);
-                in.readBlank();
+            while (hasNext(objin, first)) {
+                DeMember member = objin.readFieldName(members);
+                objin.readBlank();
                 if (member == null) {
-                    in.skipValue(); //跳过不存在的属性的值
+                    objin.skipValue(); //跳过不存在的属性的值
                 } else {
-                    Object val = readMemberValue(in, member, first);
+                    Object val = readMemberValue(objin, member, first);
                     boolean flag = true;
                     for (int i = 0; i < fields.length; i++) {
                         if (member == fields[i]) {
@@ -280,7 +281,7 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
                 }
                 first = false;
             }
-            in.readObjectE(typeClass);
+            objin.readObjectE(typeClass);
             if (this.creator == null) return null;
             final T result = this.creator.create(constructorParams);
             for (int i = 0; i < oc; i++) {
@@ -290,6 +291,10 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
         }
     }
 
+    protected R objectReader(R in) {
+        return in;
+    }
+
     protected boolean hasNext(R in, boolean first) {
         return in.hasNext();
     }
diff --git a/src/org/redkale/convert/ObjectEncoder.java b/src/org/redkale/convert/ObjectEncoder.java
index f5930458a..dd6e64a8c 100644
--- a/src/org/redkale/convert/ObjectEncoder.java
+++ b/src/org/redkale/convert/ObjectEncoder.java
@@ -163,25 +163,30 @@ public class ObjectEncoder<W extends Writer, T> implements Encodeable<W, T> {
             factory.loadEncoder(clz).convertTo(out, value);
             return;
         }
-        if (out.writeObjectB(value) < 0) {
+        W objout = objectWriter(out, value);
+        if (objout.writeObjectB(value) < 0) {
             int maxPosition = 0;
             for (EnMember member : members) {
                 maxPosition = member.getPosition();
-                out.writeObjectField(member, value);
+                objout.writeObjectField(member, value);
             }
-            if (out.objExtFunc != null) {
-                ConvertField[] extFields = out.objExtFunc.apply(value);
+            if (objout.objExtFunc != null) {
+                ConvertField[] extFields = objout.objExtFunc.apply(value);
                 if (extFields != null) {
                     Encodeable<W, ?> anyEncoder = factory.getAnyEncoder();
                     for (ConvertField en : extFields) {
                         if (en == null) continue;
                         maxPosition++;
-                        out.writeObjectField(en.getName(), en.getType(), Math.max(en.getPosition(), maxPosition), anyEncoder, en.getValue());
+                        objout.writeObjectField(en.getName(), en.getType(), Math.max(en.getPosition(), maxPosition), anyEncoder, en.getValue());
                     }
                 }
             }
         }
-        out.writeObjectE(value);
+        objout.writeObjectE(value);
+    }
+
+    protected W objectWriter(W out, T value) {
+        return out;
     }
 
     @Override