diff --git a/src/org/redkale/util/TypeToken.java b/src/org/redkale/util/TypeToken.java
index a734e283b..895de030b 100644
--- a/src/org/redkale/util/TypeToken.java
+++ b/src/org/redkale/util/TypeToken.java
@@ -69,11 +69,17 @@ public abstract class TypeToken<T> {
         if (type instanceof TypeVariable) {
             if (declaringClass instanceof Class) {
                 final Class declaringClass0 = (Class) declaringClass;
-                final Type superType = declaringClass0.getGenericSuperclass();
+                Type superType = declaringClass0.getGenericSuperclass();
+                while (superType instanceof Class && superType != Object.class) superType = ((Class) superType).getGenericSuperclass();
                 if (superType instanceof ParameterizedType) {
                     ParameterizedType superPT = (ParameterizedType) superType;
                     Type[] atas = superPT.getActualTypeArguments();
-                    TypeVariable[] asts = declaringClass0.getSuperclass().getTypeParameters();
+                    Class ss = declaringClass0;
+                    TypeVariable[] asts = ss.getTypeParameters();
+                    while (atas.length != asts.length && ss != Object.class) {
+                        ss = ss.getSuperclass();
+                        asts = ss.getTypeParameters();
+                    }
                     if (atas.length == asts.length) {
                         for (int i = 0; i < asts.length; i++) {
                             if (asts[i] == type) return atas[i];