diff --git a/android-jdk6-redkale/src/org/redkale/convert/Factory.java b/android-jdk6-redkale/src/org/redkale/convert/Factory.java
index b8b308a84..cb00f6e25 100644
--- a/android-jdk6-redkale/src/org/redkale/convert/Factory.java
+++ b/android-jdk6-redkale/src/org/redkale/convert/Factory.java
@@ -20,7 +20,7 @@ import org.redkale.util.*;
 import org.redkale.util.Creator.Creators;
 
 /**
- * 
+ *
  * @see http://www.redkale.org
  * @author zhangjx
  * @param <R>
@@ -83,6 +83,8 @@ public abstract class Factory<R extends Reader, W extends Writer> {
 
             this.register(Number.class, NumberSimpledCoder.instance);
             this.register(String.class, StringSimpledCoder.instance);
+            this.register(CharSequence.class, CharSequenceSimpledCoder.instance);
+            this.register(StringBuilder.class, CharSequenceSimpledCoder.instance);
             this.register(java.util.Date.class, DateSimpledCoder.instance);
             this.register(BigInteger.class, BigIntegerSimpledCoder.instance);
             this.register(InetAddress.class, InetAddressSimpledCoder.instance);
diff --git a/android-jdk6-redkale/src/org/redkale/convert/ObjectEncoder.java b/android-jdk6-redkale/src/org/redkale/convert/ObjectEncoder.java
index 87d75aee1..c7715feac 100644
--- a/android-jdk6-redkale/src/org/redkale/convert/ObjectEncoder.java
+++ b/android-jdk6-redkale/src/org/redkale/convert/ObjectEncoder.java
@@ -8,7 +8,6 @@ package org.redkale.convert;
 import org.redkale.util.Attribute;
 import java.lang.reflect.*;
 import java.util.*;
-import org.redkale.util.Attribute.Attributes;
 
 /**
  *
@@ -132,7 +131,7 @@ public final class ObjectEncoder<W extends Writer, T> implements Encodeable<W, T
             }
             fieldalias = ref == null || ref.name().isEmpty() ? mfieldname : ref.name();
         }
-        return Attributes.create(clazz, fieldalias, field, getter, setter);
+        return Attribute.create(clazz, fieldalias, field, getter, setter);
     }
 
     public void init(final Factory factory) {
diff --git a/android-jdk6-redkale/src/org/redkale/convert/ext/CharSequenceSimpledCoder.java b/android-jdk6-redkale/src/org/redkale/convert/ext/CharSequenceSimpledCoder.java
new file mode 100644
index 000000000..7d7796e87
--- /dev/null
+++ b/android-jdk6-redkale/src/org/redkale/convert/ext/CharSequenceSimpledCoder.java
@@ -0,0 +1,29 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package org.redkale.convert.ext;
+
+import org.redkale.convert.*;
+
+/**
+ *
+ * @author zhangjx
+ * @param <R>
+ * @param <W>
+ */
+public class CharSequenceSimpledCoder<R extends Reader, W extends Writer> extends SimpledCoder<R, W, CharSequence> {
+
+    public static final CharSequenceSimpledCoder instance = new CharSequenceSimpledCoder();
+
+    @Override
+    public void convertTo(W out, CharSequence value) {
+        out.writeString(value == null ? null : value.toString());
+    }
+
+    @Override
+    public CharSequence convertFrom(R in) {
+        return in.readString();
+    }
+}