diff --git a/src/org/redkale/convert/ObjectDecoder.java b/src/org/redkale/convert/ObjectDecoder.java
index 1cd91cf42..e93b426cd 100644
--- a/src/org/redkale/convert/ObjectDecoder.java
+++ b/src/org/redkale/convert/ObjectDecoder.java
@@ -76,7 +76,7 @@ public final class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T
                     if (Modifier.isStatic(field.getModifiers())) continue;
                     ref = factory.findRef(field);
                     if (ref != null && ref.ignore()) continue;
-                    Type t = ObjectEncoder.createClassType(field.getGenericType(), this.type);
+                    Type t = TypeToken.createClassType(field.getGenericType(), this.type);
                     list.add(new DeMember(ObjectEncoder.createAttribute(factory, clazz, field, null, null), factory.loadDecoder(t)));
                 }
                 final boolean reversible = factory.isReversible();
@@ -99,7 +99,7 @@ public final class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T
                     }
                     ref = factory.findRef(method);
                     if (ref != null && ref.ignore()) continue;
-                    Type t = ObjectEncoder.createClassType(method.getGenericParameterTypes()[0], this.type);
+                    Type t = TypeToken.createClassType(method.getGenericParameterTypes()[0], this.type);
                     list.add(new DeMember(ObjectEncoder.createAttribute(factory, clazz, null, null, method), factory.loadDecoder(t)));
                 }
                 if (cps != null) { //可能存在某些构造函数中的字段名不存在setter方法
@@ -115,7 +115,7 @@ public final class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T
                         //不存在setter方法
                         try {
                             Field f = clazz.getDeclaredField(constructorField);
-                            Type t = ObjectEncoder.createClassType(f.getGenericType(), this.type);
+                            Type t = TypeToken.createClassType(f.getGenericType(), this.type);
                             list.add(new DeMember(ObjectEncoder.createAttribute(factory, clazz, f, null, null), factory.loadDecoder(t)));
                         } catch (NoSuchFieldException nsfe) { //不存在field， 可能存在getter方法
                             char[] fs = constructorField.toCharArray();
@@ -127,7 +127,7 @@ public final class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T
                             } catch (NoSuchMethodException ex) {
                                 getter = clazz.getMethod("is" + mn);
                             }
-                            Type t = ObjectEncoder.createClassType(getter.getGenericParameterTypes()[0], this.type);
+                            Type t = TypeToken.createClassType(getter.getGenericParameterTypes()[0], this.type);
                             list.add(new DeMember(ObjectEncoder.createAttribute(factory, clazz, null, getter, null), factory.loadDecoder(t)));
                         }
                     }
diff --git a/src/org/redkale/convert/ObjectEncoder.java b/src/org/redkale/convert/ObjectEncoder.java
index 2fd842b3a..ec55a8f96 100644
--- a/src/org/redkale/convert/ObjectEncoder.java
+++ b/src/org/redkale/convert/ObjectEncoder.java
@@ -68,7 +68,7 @@ public final class ObjectEncoder<W extends Writer, T> implements Encodeable<W, T
                     if (Modifier.isStatic(field.getModifiers())) continue;
                     ref = factory.findRef(field);
                     if (ref != null && ref.ignore()) continue;
-                    Type t = createClassType(field.getGenericType(), this.type);
+                    Type t = TypeToken.createClassType(field.getGenericType(), this.type);
                     list.add(new EnMember(createAttribute(factory, clazz, field, null, null), factory.loadEncoder(t)));
                 }
                 for (final Method method : clazz.getMethods()) {
@@ -91,7 +91,7 @@ public final class ObjectEncoder<W extends Writer, T> implements Encodeable<W, T
                     }
                     ref = factory.findRef(method);
                     if (ref != null && ref.ignore()) continue;
-                    Type t = createClassType(method.getGenericReturnType(), this.type);
+                    Type t = TypeToken.createClassType(method.getGenericReturnType(), this.type);
                     list.add(new EnMember(createAttribute(factory, clazz, null, method, null), factory.loadEncoder(t)));
                 }
                 this.members = list.toArray(new EnMember[list.size()]);
@@ -146,42 +146,6 @@ public final class ObjectEncoder<W extends Writer, T> implements Encodeable<W, T
         return "ObjectEncoder{" + "type=" + type + ", members=" + Arrays.toString(members) + '}';
     }
 
-    static Type createClassType(final Type type, final Type declaringType0) {
-        if (TypeToken.isClassType(type)) return type;
-        if (type instanceof ParameterizedType) {  // e.g. Map<String, String>
-            final ParameterizedType pt = (ParameterizedType) type;
-            final Type[] paramTypes = pt.getActualTypeArguments();
-            for (int i = 0; i < paramTypes.length; i++) {
-                paramTypes[i] = createClassType(paramTypes[i], declaringType0);
-            }
-            return TypeToken.createParameterizedType(pt.getOwnerType(), pt.getRawType(), paramTypes);
-        }
-        Type declaringType = declaringType0;
-        if (declaringType instanceof Class) {
-            do {
-                declaringType = ((Class) declaringType).getGenericSuperclass();
-                if (declaringType == Object.class) return Object.class;
-            } while (declaringType instanceof Class);
-        }
-        //存在通配符则declaringType 必须是 ParameterizedType
-        if (!(declaringType instanceof ParameterizedType)) return Object.class;
-        final ParameterizedType declaringPType = (ParameterizedType) declaringType;
-        final Type[] virTypes = ((Class) declaringPType.getRawType()).getTypeParameters();
-        final Type[] desTypes = declaringPType.getActualTypeArguments();
-        if (type instanceof WildcardType) {   // e.g. <? extends Serializable>
-            final WildcardType wt = (WildcardType) type;
-            for (Type f : wt.getUpperBounds()) {
-                for (int i = 0; i < virTypes.length; i++) {
-                    if (virTypes[i].equals(f)) return desTypes.length <= i ? Object.class : desTypes[i];
-                }
-            }
-        } else if (type instanceof TypeVariable) { // e.g.  <? extends E>
-            for (int i = 0; i < virTypes.length; i++) {
-                if (virTypes[i].equals(type)) return desTypes.length <= i ? Object.class : desTypes[i];
-            }
-        }
-        return type;
-    }
 //
 //    static Type makeGenericType(final Type type, final Type[] virGenericTypes, final Type[] realGenericTypes) {
 //        if (type instanceof Class) {  //e.g. String
@@ -230,7 +194,6 @@ public final class ObjectEncoder<W extends Writer, T> implements Encodeable<W, T
 //        }
 //        return type;
 //    }
-
     static boolean contains(String[] values, String value) {
         for (String str : values) {
             if (str.equals(value)) return true;
diff --git a/src/org/redkale/util/TypeToken.java b/src/org/redkale/util/TypeToken.java
index cd44613da..6ed2e299f 100644
--- a/src/org/redkale/util/TypeToken.java
+++ b/src/org/redkale/util/TypeToken.java
@@ -38,6 +38,7 @@ public abstract class TypeToken<T> {
      * 例如: Map&#60; String, String &#62; 返回 ture; Map&#60; ? extends Serializable, String &#62; 返回false;
      *
      * @param type Type对象
+     *
      * @return 是否可反解析
      */
     public final static boolean isClassType(final Type type) {
@@ -55,12 +56,58 @@ public abstract class TypeToken<T> {
         return true;
     }
 
+    /**
+     * 动态创建类型为ParameterizedType或Class的Type
+     *
+     * @param type           当前泛型
+     * @param declaringType0 子类
+     *
+     * @return Type
+     */
+    public static Type createClassType(final Type type, final Type declaringType0) {
+        if (isClassType(type)) return type;
+        if (type instanceof ParameterizedType) {  // e.g. Map<String, String>
+            final ParameterizedType pt = (ParameterizedType) type;
+            final Type[] paramTypes = pt.getActualTypeArguments();
+            for (int i = 0; i < paramTypes.length; i++) {
+                paramTypes[i] = createClassType(paramTypes[i], declaringType0);
+            }
+            return createParameterizedType(pt.getOwnerType(), pt.getRawType(), paramTypes);
+        }
+        Type declaringType = declaringType0;
+        if (declaringType instanceof Class) {
+            do {
+                declaringType = ((Class) declaringType).getGenericSuperclass();
+                if (declaringType == Object.class) return Object.class;
+            } while (declaringType instanceof Class);
+        }
+        //存在通配符则declaringType 必须是 ParameterizedType
+        if (!(declaringType instanceof ParameterizedType)) return Object.class;
+        final ParameterizedType declaringPType = (ParameterizedType) declaringType;
+        final Type[] virTypes = ((Class) declaringPType.getRawType()).getTypeParameters();
+        final Type[] desTypes = declaringPType.getActualTypeArguments();
+        if (type instanceof WildcardType) {   // e.g. <? extends Serializable>
+            final WildcardType wt = (WildcardType) type;
+            for (Type f : wt.getUpperBounds()) {
+                for (int i = 0; i < virTypes.length; i++) {
+                    if (virTypes[i].equals(f)) return desTypes.length <= i ? Object.class : desTypes[i];
+                }
+            }
+        } else if (type instanceof TypeVariable) { // e.g.  <? extends E>
+            for (int i = 0; i < virTypes.length; i++) {
+                if (virTypes[i].equals(type)) return desTypes.length <= i ? Object.class : desTypes[i];
+            }
+        }
+        return type;
+    }
+
     /**
      * 动态创建 ParameterizedType
      *
      * @param ownerType0           ParameterizedType 的 ownerType
      * @param rawType0             ParameterizedType 的 rawType
      * @param actualTypeArguments0 ParameterizedType 的 actualTypeArguments
+     *
      * @return Type
      */
     public static Type createParameterizedType(final Type ownerType0, final Type rawType0, final Type... actualTypeArguments0) {
@@ -104,8 +151,8 @@ public abstract class TypeToken<T> {
                 final ParameterizedType that = (ParameterizedType) o;
                 if (this == that) return true;
                 return Objects.equals(ownerType, that.getOwnerType())
-                        && Objects.equals(rawType, that.getRawType())
-                        && Arrays.equals(actualTypeArguments, that.getActualTypeArguments());
+                    && Objects.equals(rawType, that.getRawType())
+                    && Arrays.equals(actualTypeArguments, that.getActualTypeArguments());
             }
 
             @Override