diff --git a/src/com/wentch/redkale/convert/json/JsonByteBufferWriter.java b/src/com/wentch/redkale/convert/json/JsonByteBufferWriter.java
index 34882e304..6482e3a0f 100644
--- a/src/com/wentch/redkale/convert/json/JsonByteBufferWriter.java
+++ b/src/com/wentch/redkale/convert/json/JsonByteBufferWriter.java
@@ -49,6 +49,7 @@ public final class JsonByteBufferWriter extends JsonWriter {
         return false;
     }
 
+    @Override
     public ByteBuffer[] toBuffers() {
         if (buffers == null) return new ByteBuffer[0];
         for (int i = index; i < this.buffers.length; i++) {
@@ -58,16 +59,6 @@ public final class JsonByteBufferWriter extends JsonWriter {
         return this.buffers;
     }
 
-    @Override
-    public char[] toArray() {
-        throw new UnsupportedOperationException("Not supported yet.");
-    }
-
-    @Override
-    public byte[] toUTF8Bytes() {
-        throw new UnsupportedOperationException("Not supported yet.");
-    }
-
     @Override
     public int count() {
         if (this.buffers == null) return 0;
diff --git a/src/com/wentch/redkale/convert/json/JsonConvert.java b/src/com/wentch/redkale/convert/json/JsonConvert.java
index cfa34e3be..2fd8b709c 100644
--- a/src/com/wentch/redkale/convert/json/JsonConvert.java
+++ b/src/com/wentch/redkale/convert/json/JsonConvert.java
@@ -134,19 +134,4 @@ public final class JsonConvert extends Convert<JsonReader, JsonWriter> {
         }
         return out.toBuffers();
     }
-
-    public byte[] convertToUTF8Bytes(Object value) {
-        if (value == null) return new byte[]{110, 117, 108, 108};
-        return convertToUTF8Bytes(value.getClass(), value);
-    }
-
-    public byte[] convertToUTF8Bytes(final Type type, Object value) {
-        if (type == null) return null;
-        if (value == null) return new byte[]{110, 117, 108, 108};
-        final JsonWriter out = writerPool.get().setTiny(tiny);
-        factory.loadEncoder(type).convertTo(out, value);
-        byte[] result = out.toUTF8Bytes();
-        writerPool.offer(out);
-        return result;
-    }
 }
diff --git a/src/com/wentch/redkale/convert/json/JsonWriter.java b/src/com/wentch/redkale/convert/json/JsonWriter.java
index 1b18456dc..c51867215 100644
--- a/src/com/wentch/redkale/convert/json/JsonWriter.java
+++ b/src/com/wentch/redkale/convert/json/JsonWriter.java
@@ -7,6 +7,7 @@ package com.wentch.redkale.convert.json;
 
 import com.wentch.redkale.convert.*;
 import com.wentch.redkale.util.*;
+import java.nio.*;
 
 /**
  *
@@ -101,15 +102,8 @@ public class JsonWriter implements Writer {
         return true;
     }
 
-    public char[] toArray() {
-        if (count == content.length) return content;
-        char[] newdata = new char[count];
-        System.arraycopy(content, 0, newdata, 0, count);
-        return newdata;
-    }
-
-    public byte[] toUTF8Bytes() {
-        return Utility.encodeUTF8(content, 0, count);
+    public ByteBuffer[] toBuffers() {
+        return new ByteBuffer[]{ByteBuffer.wrap(Utility.encodeUTF8(content, 0, count))};
     }
 
     public int count() {