diff --git a/src/org/redkale/convert/ConvertFactory.java b/src/org/redkale/convert/ConvertFactory.java
index 889ccf9a7..79ced4f2c 100644
--- a/src/org/redkale/convert/ConvertFactory.java
+++ b/src/org/redkale/convert/ConvertFactory.java
@@ -220,15 +220,10 @@ public abstract class ConvertFactory<R extends Reader, W extends Writer> {
         return false;
     }
 
-    public ConvertColumnEntry findRef(AccessibleObject element) {
+    public ConvertColumnEntry findRef(Class clazz, AccessibleObject element) {
         if (element == null) return null;
         ConvertColumnEntry en = this.columnEntrys.get(element);
-        Set<String> onlyColumns = null;
-        if (element instanceof Method) {
-            onlyColumns = ignoreAlls.get(((Method) element).getDeclaringClass());
-        } else if (element instanceof Field) {
-            onlyColumns = ignoreAlls.get(((Field) element).getDeclaringClass());
-        }
+        Set<String> onlyColumns = ignoreAlls.get(clazz);
         if (en != null && onlyColumns == null) return en;
         final ConvertType ct = this.getConvertType();
         ConvertColumn[] ccs = element.getAnnotationsByType(ConvertColumn.class);
diff --git a/src/org/redkale/convert/ObjectDecoder.java b/src/org/redkale/convert/ObjectDecoder.java
index d6d08210a..7f4f03bb3 100644
--- a/src/org/redkale/convert/ObjectDecoder.java
+++ b/src/org/redkale/convert/ObjectDecoder.java
@@ -94,7 +94,7 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
                 for (final Field field : clazz.getFields()) {
                     if (Modifier.isStatic(field.getModifiers())) continue;
                     if (factory.isConvertDisabled(field)) continue;
-                    ref = factory.findRef(field);
+                    ref = factory.findRef(clazz, field);
                     if (ref != null && ref.ignore()) continue;
                     Decodeable<R, ?> fieldCoder = factory.findFieldCoder(clazz, field.getName());
                     if (fieldCoder == null) {
@@ -123,7 +123,7 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
                             continue;
                         }
                     }
-                    ref = factory.findRef(method);
+                    ref = factory.findRef(clazz, method);
                     if (ref != null && ref.ignore()) continue;
 
                     Decodeable<R, ?> fieldCoder = factory.findFieldCoder(clazz, ConvertFactory.readGetSetFieldName(method));
diff --git a/src/org/redkale/convert/ObjectEncoder.java b/src/org/redkale/convert/ObjectEncoder.java
index acb5fabf7..6a180e69b 100644
--- a/src/org/redkale/convert/ObjectEncoder.java
+++ b/src/org/redkale/convert/ObjectEncoder.java
@@ -75,7 +75,7 @@ public class ObjectEncoder<W extends Writer, T> implements Encodeable<W, T> {
                 for (final Field field : clazz.getFields()) {
                     if (Modifier.isStatic(field.getModifiers())) continue;
                     if (factory.isConvertDisabled(field)) continue;
-                    ref = factory.findRef(field);
+                    ref = factory.findRef(clazz, field);
                     if (ref != null && ref.ignore()) continue;
                     Encodeable<W, ?> fieldCoder = factory.findFieldCoder(clazz, field.getName());
                     if (fieldCoder == null) {
@@ -104,7 +104,7 @@ public class ObjectEncoder<W extends Writer, T> implements Encodeable<W, T> {
                             continue;
                         }
                     }
-                    ref = factory.findRef(method);
+                    ref = factory.findRef(clazz, method);
                     if (ref != null && ref.ignore()) continue;
                     Encodeable<W, ?> fieldCoder = factory.findFieldCoder(clazz, ConvertFactory.readGetSetFieldName(method));
                     if (fieldCoder == null) {
@@ -253,24 +253,24 @@ public class ObjectEncoder<W extends Writer, T> implements Encodeable<W, T> {
     static Attribute createAttribute(final ConvertFactory factory, Class clazz, final Field field, final Method getter, final Method setter) {
         String fieldalias;
         if (field != null) { // public field
-            ConvertColumnEntry ref = factory.findRef(field);
+            ConvertColumnEntry ref = factory.findRef(clazz, field);
             fieldalias = ref == null || ref.name().isEmpty() ? field.getName() : ref.name();
         } else if (getter != null) {
-            ConvertColumnEntry ref = factory.findRef(getter);
+            ConvertColumnEntry ref = factory.findRef(clazz, getter);
             String mfieldname = ConvertFactory.readGetSetFieldName(getter);
             if (ref == null) {
                 try {
-                    ref = factory.findRef(clazz.getDeclaredField(mfieldname));
+                    ref = factory.findRef(clazz, clazz.getDeclaredField(mfieldname));
                 } catch (Exception e) {
                 }
             }
             fieldalias = ref == null || ref.name().isEmpty() ? mfieldname : ref.name();
         } else { // setter != null
-            ConvertColumnEntry ref = factory.findRef(setter);
+            ConvertColumnEntry ref = factory.findRef(clazz, setter);
             String mfieldname = ConvertFactory.readGetSetFieldName(setter);
             if (ref == null) {
                 try {
-                    ref = factory.findRef(clazz.getDeclaredField(mfieldname));
+                    ref = factory.findRef(clazz, clazz.getDeclaredField(mfieldname));
                 } catch (Exception e) {
                 }
             }