diff --git a/src/org/redkale/convert/BinaryConvert.java b/src/org/redkale/convert/BinaryConvert.java
index 5019545a2..a32295148 100644
--- a/src/org/redkale/convert/BinaryConvert.java
+++ b/src/org/redkale/convert/BinaryConvert.java
@@ -6,6 +6,8 @@
 package org.redkale.convert;
 
 import java.lang.reflect.Type;
+import java.util.function.BiFunction;
+import org.redkale.util.Attribute;
 
 /**
  * 二进制序列化/反序列化操作类
@@ -33,4 +35,10 @@ public abstract class BinaryConvert<R extends Reader, W extends Writer> extends
     public abstract byte[] convertTo(final Type type, final Object value);
 
     public abstract byte[] convertMapTo(final Object... values);
+
+    public abstract byte[] convertTo(BiFunction<Attribute, Object, Object> fieldFunc, final Object value);
+
+    public abstract byte[] convertTo(final Type type, BiFunction<Attribute, Object, Object> fieldFunc, final Object value);
+
+    public abstract byte[] convertMapTo(BiFunction<Attribute, Object, Object> fieldFunc, final Object... values);
 }
diff --git a/src/org/redkale/convert/Convert.java b/src/org/redkale/convert/Convert.java
index 3c35a95d8..55199c529 100644
--- a/src/org/redkale/convert/Convert.java
+++ b/src/org/redkale/convert/Convert.java
@@ -7,7 +7,8 @@ package org.redkale.convert;
 
 import java.lang.reflect.Type;
 import java.nio.ByteBuffer;
-import java.util.function.Supplier;
+import java.util.function.*;
+import org.redkale.util.Attribute;
 
 /**
  * 序列化/反序列化操作类
@@ -31,6 +32,11 @@ public abstract class Convert<R extends Reader, W extends Writer> {
         return this.factory;
     }
 
+    protected <S extends W> S funcWrite(S writer, BiFunction<Attribute, Object, Object> fieldFunc) {
+        writer.fieldFunc = fieldFunc;
+        return writer;
+    }
+
     public abstract boolean isBinary();
 
     public abstract <T> T convertFrom(final Type type, final byte[] bytes);
@@ -45,4 +51,9 @@ public abstract class Convert<R extends Reader, W extends Writer> {
 
     public abstract ByteBuffer[] convertMapTo(final Supplier<ByteBuffer> supplier, final Object... values);
 
+    public abstract ByteBuffer[] convertTo(final Supplier<ByteBuffer> supplier, BiFunction<Attribute, Object, Object> fieldFunc, final Object value);
+
+    public abstract ByteBuffer[] convertTo(final Supplier<ByteBuffer> supplier, final Type type, BiFunction<Attribute, Object, Object> fieldFunc, final Object value);
+
+    public abstract ByteBuffer[] convertMapTo(final Supplier<ByteBuffer> supplier, BiFunction<Attribute, Object, Object> fieldFunc, final Object... values);
 }
diff --git a/src/org/redkale/convert/TextConvert.java b/src/org/redkale/convert/TextConvert.java
index 7d9d0b086..0229c3158 100644
--- a/src/org/redkale/convert/TextConvert.java
+++ b/src/org/redkale/convert/TextConvert.java
@@ -6,6 +6,8 @@
 package org.redkale.convert;
 
 import java.lang.reflect.Type;
+import java.util.function.BiFunction;
+import org.redkale.util.Attribute;
 
 /**
  * 文本序列化/反序列化操作类
@@ -33,4 +35,10 @@ public abstract class TextConvert<R extends Reader, W extends Writer> extends Co
     public abstract String convertTo(final Type type, final Object value);
 
     public abstract String convertMapTo(final Object... values);
+
+    public abstract String convertTo(BiFunction<Attribute, Object, Object> fieldFunc, final Object value);
+
+    public abstract String convertTo(final Type type, BiFunction<Attribute, Object, Object> fieldFunc, final Object value);
+
+    public abstract String convertMapTo(BiFunction<Attribute, Object, Object> fieldFunc, final Object... values);
 }
diff --git a/src/org/redkale/convert/Writer.java b/src/org/redkale/convert/Writer.java
index 0937b0fe8..947eb67ba 100644
--- a/src/org/redkale/convert/Writer.java
+++ b/src/org/redkale/convert/Writer.java
@@ -6,7 +6,8 @@
 package org.redkale.convert;
 
 import java.lang.reflect.*;
-import org.redkale.util.StringWrapper;
+import java.util.function.BiFunction;
+import org.redkale.util.*;
 
 /**
  * 序列化的数据输出流
@@ -24,6 +25,9 @@ public abstract class Writer {
     //convertTo时是否以指定Type的ObjectEncoder进行处理
     protected Type specify;
 
+    //对某个字段值进行动态处理
+    protected BiFunction<Attribute, Object, Object> fieldFunc;
+
     /**
      * 设置specify
      *
@@ -39,6 +43,11 @@ public abstract class Writer {
         }
     }
 
+    protected boolean recycle() {
+        this.fieldFunc = null;
+        return true;
+    }
+
     /**
      * 返回specify
      *
@@ -106,7 +115,12 @@ public abstract class Writer {
      */
     @SuppressWarnings("unchecked")
     public void writeObjectField(final EnMember member, Object obj) {
-        Object value = member.attribute.get(obj);
+        Object value;
+        if (fieldFunc == null) {
+            value = member.attribute.get(obj);
+        } else {
+            value = fieldFunc.apply(member.attribute, obj);
+        }
         if (value == null) return;
         if (tiny()) {
             if (member.istring) {
diff --git a/src/org/redkale/convert/bson/BsonByteBufferWriter.java b/src/org/redkale/convert/bson/BsonByteBufferWriter.java
index 4bcb36c9d..e0905d884 100644
--- a/src/org/redkale/convert/bson/BsonByteBufferWriter.java
+++ b/src/org/redkale/convert/bson/BsonByteBufferWriter.java
@@ -131,6 +131,7 @@ public class BsonByteBufferWriter extends BsonWriter {
 
     @Override
     protected boolean recycle() {
+        super.recycle();
         this.index = 0;
         this.specify = null;
         this.buffers = null;
diff --git a/src/org/redkale/convert/bson/BsonConvert.java b/src/org/redkale/convert/bson/BsonConvert.java
index 649dec0b9..2019d0717 100644
--- a/src/org/redkale/convert/bson/BsonConvert.java
+++ b/src/org/redkale/convert/bson/BsonConvert.java
@@ -94,6 +94,7 @@ public final class BsonConvert extends BinaryConvert<BsonReader, BsonWriter> {
     }
 
     //------------------------------ convertFrom -----------------------------------------------------------
+    @Override
     public <T> T convertFrom(final Type type, final byte[] bytes) {
         if (bytes == null) return null;
         return convertFrom(type, bytes, 0, bytes.length);
@@ -141,8 +142,13 @@ public final class BsonConvert extends BinaryConvert<BsonReader, BsonWriter> {
     //------------------------------ convertTo -----------------------------------------------------------
     @Override
     public byte[] convertTo(final Object value) {
+        return convertTo((BiFunction) null, value);
+    }
+
+    @Override
+    public byte[] convertTo(BiFunction<Attribute, Object, Object> fieldFunc, final Object value) {
         if (value == null) {
-            final BsonWriter out = writerPool.get().tiny(tiny);
+            final BsonWriter out = funcWrite(writerPool.get().tiny(tiny), fieldFunc);
             out.writeNull();
             byte[] result = out.toArray();
             writerPool.accept(out);
@@ -153,8 +159,13 @@ public final class BsonConvert extends BinaryConvert<BsonReader, BsonWriter> {
 
     @Override
     public byte[] convertTo(final Type type, final Object value) {
+        return convertTo(type, (BiFunction) null, value);
+    }
+
+    @Override
+    public byte[] convertTo(final Type type, BiFunction<Attribute, Object, Object> fieldFunc, final Object value) {
         if (type == null) return null;
-        final BsonWriter out = writerPool.get().tiny(tiny);
+        final BsonWriter out = funcWrite(writerPool.get().tiny(tiny), fieldFunc);
         factory.loadEncoder(type).convertTo(out, value);
         byte[] result = out.toArray();
         writerPool.accept(out);
@@ -163,8 +174,13 @@ public final class BsonConvert extends BinaryConvert<BsonReader, BsonWriter> {
 
     @Override
     public byte[] convertMapTo(final Object... values) {
+        return convertTo((BiFunction) null, values);
+    }
+
+    @Override
+    public byte[] convertMapTo(BiFunction<Attribute, Object, Object> fieldFunc, final Object... values) {
         if (values == null) return null;
-        final BsonWriter out = writerPool.get().tiny(tiny);
+        final BsonWriter out = funcWrite(writerPool.get().tiny(tiny), fieldFunc);
         ((AnyEncoder) factory.getAnyEncoder()).convertMapTo(out, values);
         byte[] result = out.toArray();
         writerPool.accept(out);
@@ -198,8 +214,13 @@ public final class BsonConvert extends BinaryConvert<BsonReader, BsonWriter> {
 
     @Override
     public ByteBuffer[] convertTo(final Supplier<ByteBuffer> supplier, final Object value) {
+        return convertTo(supplier, (BiFunction) null, value);
+    }
+
+    @Override
+    public ByteBuffer[] convertTo(final Supplier<ByteBuffer> supplier, BiFunction<Attribute, Object, Object> fieldFunc, final Object value) {
         if (supplier == null) return null;
-        BsonByteBufferWriter out = new BsonByteBufferWriter(tiny, supplier);
+        BsonByteBufferWriter out = funcWrite(new BsonByteBufferWriter(tiny, supplier), fieldFunc);
         if (value == null) {
             out.writeNull();
         } else {
@@ -210,8 +231,13 @@ public final class BsonConvert extends BinaryConvert<BsonReader, BsonWriter> {
 
     @Override
     public ByteBuffer[] convertTo(final Supplier<ByteBuffer> supplier, final Type type, final Object value) {
+        return convertTo(supplier, type, (BiFunction) null, value);
+    }
+
+    @Override
+    public ByteBuffer[] convertTo(final Supplier<ByteBuffer> supplier, final Type type, BiFunction<Attribute, Object, Object> fieldFunc, final Object value) {
         if (supplier == null || type == null) return null;
-        BsonByteBufferWriter out = new BsonByteBufferWriter(tiny, supplier);
+        BsonByteBufferWriter out = funcWrite(new BsonByteBufferWriter(tiny, supplier), fieldFunc);
         if (value == null) {
             out.writeNull();
         } else {
@@ -222,8 +248,13 @@ public final class BsonConvert extends BinaryConvert<BsonReader, BsonWriter> {
 
     @Override
     public ByteBuffer[] convertMapTo(final Supplier<ByteBuffer> supplier, final Object... values) {
+        return convertMapTo(supplier, (BiFunction) null, values);
+    }
+
+    @Override
+    public ByteBuffer[] convertMapTo(final Supplier<ByteBuffer> supplier, BiFunction<Attribute, Object, Object> fieldFunc, final Object... values) {
         if (supplier == null) return null;
-        BsonByteBufferWriter out = new BsonByteBufferWriter(tiny, supplier);
+        BsonByteBufferWriter out = funcWrite(new BsonByteBufferWriter(tiny, supplier), fieldFunc);
         if (values == null) {
             out.writeNull();
         } else {
diff --git a/src/org/redkale/convert/bson/BsonWriter.java b/src/org/redkale/convert/bson/BsonWriter.java
index e0df6faa3..1cbe502f1 100644
--- a/src/org/redkale/convert/bson/BsonWriter.java
+++ b/src/org/redkale/convert/bson/BsonWriter.java
@@ -97,7 +97,9 @@ public class BsonWriter extends Writer {
         count += len;
     }
 
+    @Override
     protected boolean recycle() {
+        super.recycle();
         this.count = 0;
         this.specify = null;
         if (this.content.length > defaultSize) {
diff --git a/src/org/redkale/convert/json/JsonByteBufferWriter.java b/src/org/redkale/convert/json/JsonByteBufferWriter.java
index 51c8e89be..166956809 100644
--- a/src/org/redkale/convert/json/JsonByteBufferWriter.java
+++ b/src/org/redkale/convert/json/JsonByteBufferWriter.java
@@ -48,6 +48,7 @@ public class JsonByteBufferWriter extends JsonWriter {
 
     @Override
     protected boolean recycle() {
+        super.recycle();
         this.index = 0;
         this.specify = null;
         this.charset = null;
diff --git a/src/org/redkale/convert/json/JsonConvert.java b/src/org/redkale/convert/json/JsonConvert.java
index 94821ce57..5049742d1 100644
--- a/src/org/redkale/convert/json/JsonConvert.java
+++ b/src/org/redkale/convert/json/JsonConvert.java
@@ -186,11 +186,22 @@ public final class JsonConvert extends TextConvert<JsonReader, JsonWriter> {
         return convertTo(value.getClass(), value);
     }
 
+    @Override
+    public String convertTo(BiFunction<Attribute, Object, Object> fieldFunc, final Object value) {
+        if (value == null) return "null";
+        return convertTo(value.getClass(), fieldFunc, value);
+    }
+
     @Override
     public String convertTo(final Type type, final Object value) {
+        return convertTo(type, (BiFunction) null, value);
+    }
+
+    @Override
+    public String convertTo(final Type type, BiFunction<Attribute, Object, Object> fieldFunc, final Object value) {
         if (type == null) return null;
         if (value == null) return "null";
-        final JsonWriter writer = writerPool.get().tiny(tiny);
+        final JsonWriter writer = funcWrite(writerPool.get().tiny(tiny), fieldFunc);
         writer.specify(type);
         factory.loadEncoder(type).convertTo(writer, value);
         String result = writer.toString();
@@ -201,7 +212,13 @@ public final class JsonConvert extends TextConvert<JsonReader, JsonWriter> {
     @Override
     public String convertMapTo(final Object... values) {
         if (values == null) return "null";
-        final JsonWriter writer = writerPool.get().tiny(tiny);
+        return convertMapTo((BiFunction) null, values);
+    }
+
+    @Override
+    public String convertMapTo(BiFunction<Attribute, Object, Object> fieldFunc, final Object... values) {
+        if (values == null) return "null";
+        final JsonWriter writer = funcWrite(writerPool.get().tiny(tiny), fieldFunc);
         ((AnyEncoder) factory.getAnyEncoder()).convertMapTo(writer, values);
         String result = writer.toString();
         writerPool.accept(writer);
@@ -252,8 +269,13 @@ public final class JsonConvert extends TextConvert<JsonReader, JsonWriter> {
 
     @Override
     public ByteBuffer[] convertTo(final Supplier<ByteBuffer> supplier, final Object value) {
+        return convertTo(supplier, (BiFunction) null, value);
+    }
+
+    @Override
+    public ByteBuffer[] convertTo(final Supplier<ByteBuffer> supplier, BiFunction<Attribute, Object, Object> fieldFunc, final Object value) {
         if (supplier == null) return null;
-        JsonByteBufferWriter out = new JsonByteBufferWriter(tiny, null, supplier);
+        JsonByteBufferWriter out = funcWrite(new JsonByteBufferWriter(tiny, null, supplier), fieldFunc);
         if (value == null) {
             out.writeNull();
         } else {
@@ -264,8 +286,13 @@ public final class JsonConvert extends TextConvert<JsonReader, JsonWriter> {
 
     @Override
     public ByteBuffer[] convertTo(final Supplier<ByteBuffer> supplier, final Type type, final Object value) {
+        return convertTo(supplier, type, (BiFunction) null, value);
+    }
+
+    @Override
+    public ByteBuffer[] convertTo(final Supplier<ByteBuffer> supplier, final Type type, BiFunction<Attribute, Object, Object> fieldFunc, final Object value) {
         if (supplier == null || type == null) return null;
-        JsonByteBufferWriter out = new JsonByteBufferWriter(tiny, null, supplier);
+        JsonByteBufferWriter out = funcWrite(new JsonByteBufferWriter(tiny, null, supplier), fieldFunc);
         if (value == null) {
             out.writeNull();
         } else {
@@ -277,8 +304,13 @@ public final class JsonConvert extends TextConvert<JsonReader, JsonWriter> {
 
     @Override
     public ByteBuffer[] convertMapTo(final Supplier<ByteBuffer> supplier, final Object... values) {
+        return convertMapTo(supplier, (BiFunction) null, values);
+    }
+
+    @Override
+    public ByteBuffer[] convertMapTo(final Supplier<ByteBuffer> supplier, BiFunction<Attribute, Object, Object> fieldFunc, final Object... values) {
         if (supplier == null) return null;
-        JsonByteBufferWriter out = new JsonByteBufferWriter(tiny, null, supplier);
+        JsonByteBufferWriter out = funcWrite(new JsonByteBufferWriter(tiny, null, supplier), fieldFunc);
         if (values == null) {
             out.writeNull();
         } else {
diff --git a/src/org/redkale/convert/json/JsonWriter.java b/src/org/redkale/convert/json/JsonWriter.java
index ba20ca192..ebf20d66a 100644
--- a/src/org/redkale/convert/json/JsonWriter.java
+++ b/src/org/redkale/convert/json/JsonWriter.java
@@ -97,7 +97,9 @@ public class JsonWriter extends Writer {
         if (quote) content[count++] = '"';
     }
 
+    @Override
     protected boolean recycle() {
+        super.recycle();
         this.count = 0;
         this.specify = null;
         if (this.content.length > defaultSize) {