diff --git a/src/test/java/org/redkale/test/convert/pb/User.java b/src/test/java/org/redkale/test/convert/User.java
similarity index 97%
rename from src/test/java/org/redkale/test/convert/pb/User.java
rename to src/test/java/org/redkale/test/convert/User.java
index 163827bc2..4d7391983 100644
--- a/src/test/java/org/redkale/test/convert/pb/User.java
+++ b/src/test/java/org/redkale/test/convert/User.java
@@ -2,7 +2,7 @@
  * Copyright (c) 2016-2116 Redkale
  * All rights reserved.
  */
-package org.redkale.test.convert.pb;
+package org.redkale.test.convert;
 
 import java.util.Date;
 import org.redkale.convert.ConvertColumn;
diff --git a/src/test/java/org/redkale/test/convert/json/_DyncFortuneJsonEncoder.java b/src/test/java/org/redkale/test/convert/json/_DyncFortuneJsonEncoder.java
index a04521b3a..32edc0eb8 100644
--- a/src/test/java/org/redkale/test/convert/json/_DyncFortuneJsonEncoder.java
+++ b/src/test/java/org/redkale/test/convert/json/_DyncFortuneJsonEncoder.java
@@ -14,7 +14,7 @@ public class _DyncFortuneJsonEncoder extends JsonDynEncoder<Fortune> {
 
     protected final byte[] idFieldBytes = "\"id\":".getBytes();
 
-    protected final byte[] messageCommaFieldBytes = ",\"message\":".getBytes();
+    protected final char[] idFieldChars = "\"id\":".toCharArray();
 
     public _DyncFortuneJsonEncoder(JsonFactory factory, Type type, ObjectEncoder objectEncoderSelf) {
         super(factory, type, objectEncoderSelf);
@@ -30,18 +30,8 @@ public class _DyncFortuneJsonEncoder extends JsonDynEncoder<Fortune> {
             objectEncoderSelf.convertTo(out, value);
             return;
         }
-
         out.writeTo('{');
-
-        out.writeTo(idFieldBytes);
-        out.writeInt(value.getId());
-
-        String message = value.getMessage();
-        if (message != null) {
-            out.writeTo(messageCommaFieldBytes);
-            out.writeString(message);
-        }
-
+        out.writeFieldIntValue(idFieldBytes, idFieldChars, false, value.getId());
         out.writeTo('}');
     }
 }
diff --git a/src/test/java/org/redkale/test/convert/json/_DyncMessageJsonEncoder.java b/src/test/java/org/redkale/test/convert/json/_DyncMessageJsonEncoder.java
index d81241a03..183007ee1 100644
--- a/src/test/java/org/redkale/test/convert/json/_DyncMessageJsonEncoder.java
+++ b/src/test/java/org/redkale/test/convert/json/_DyncMessageJsonEncoder.java
@@ -14,7 +14,7 @@ public class _DyncMessageJsonEncoder extends JsonDynEncoder<Message> {
 
     protected final byte[] messageFieldBytes = "\"message\":".getBytes();
 
-    protected final byte[] messageCommaFieldBytes = ",\"message\":".getBytes();
+    protected final char[] messageFieldChars = ",\"message\":".toCharArray();
 
     public _DyncMessageJsonEncoder(JsonFactory factory, Type type, ObjectEncoder objectEncoderSelf) {
         super(factory, type, objectEncoderSelf);
@@ -30,19 +30,8 @@ public class _DyncMessageJsonEncoder extends JsonDynEncoder<Message> {
             objectEncoderSelf.convertTo(out, value);
             return;
         }
-
         out.writeTo('{');
-        boolean comma = false;
-        String message = value.getMessage();
-        if (message != null) {
-            if (comma) {
-                out.writeTo(messageCommaFieldBytes);
-            } else {
-                out.writeTo(messageFieldBytes);
-                comma = true;
-            }
-            out.writeLatin1To(true, message); // out.writeString(message);
-        }
+        out.writeFieldStandardStringValue(messageFieldBytes, messageFieldChars, false, value.getMessage());
         out.writeTo('}');
     }
 }
diff --git a/src/test/java/org/redkale/test/convert/json/_DyncUserJsonEncoder.java b/src/test/java/org/redkale/test/convert/json/_DyncUserJsonEncoder.java
new file mode 100644
index 000000000..bd1e883fa
--- /dev/null
+++ b/src/test/java/org/redkale/test/convert/json/_DyncUserJsonEncoder.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2016-2116 Redkale
+ * All rights reserved.
+ */
+package org.redkale.test.convert.json;
+
+import java.lang.reflect.Type;
+import org.redkale.convert.Encodeable;
+import org.redkale.convert.ObjectEncoder;
+import org.redkale.convert.json.JsonDynEncoder;
+import org.redkale.convert.json.JsonFactory;
+import org.redkale.convert.json.JsonWriter;
+import org.redkale.test.convert.User;
+
+/**
+ *
+ * @author zhangjx
+ */
+public class _DyncUserJsonEncoder extends JsonDynEncoder<User> {
+    protected final byte[] ageFieldBytes = "\"age\":".getBytes();
+    protected final char[] ageFieldChars = "\"age\":".toCharArray();
+    protected final byte[] createTimeFieldBytes = "\"createTime\":".getBytes();
+    protected final char[] createTimeFieldChars = "\"createTime\":".toCharArray();
+    protected Encodeable createTimeEncoder;
+    protected final byte[] idFieldBytes = "\"id\":".getBytes();
+    protected final char[] idFieldChars = "\"id\":".toCharArray();
+    protected final byte[] nameFieldBytes = "\"name\":".getBytes();
+    protected final char[] nameFieldChars = "\"name\":".toCharArray();
+    protected final byte[] sexFieldBytes = "\"sex\":".getBytes();
+    protected final char[] sexFieldChars = "\"sex\":".toCharArray();
+    protected final byte[] nickNameFieldBytes = "\"nickName\":".getBytes();
+    protected final char[] nickNameFieldChars = "\"nickName\":".toCharArray();
+
+    public _DyncUserJsonEncoder(JsonFactory factory, Type type, ObjectEncoder objectEncoderSelf) {
+        super(factory, type, objectEncoderSelf);
+    }
+
+    @Override
+    public void convertTo(JsonWriter out, User value) {
+        if (value == null) {
+            out.writeObjectNull((Class) null);
+            return;
+        } else if (!out.isExtFuncEmpty()) {
+            this.objectEncoderSelf.convertTo(out, value);
+            return;
+        }
+        out.writeTo('{');
+        boolean comma = false;
+        comma = out.writeFieldIntValue(ageFieldBytes, ageFieldChars, comma, value.getAge());
+        comma = out.writeFieldObjectValue(
+                createTimeFieldBytes, createTimeFieldChars, comma, this.createTimeEncoder, value.getCreateTime());
+        comma = out.writeFieldLongValue(idFieldBytes, idFieldChars, comma, value.getId());
+        comma = out.writeFieldStringValue(nameFieldBytes, nameFieldChars, comma, value.getName());
+        comma = out.writeFieldStringValue(sexFieldBytes, sexFieldChars, comma, value.getSex());
+        comma = out.writeFieldStringValue(nickNameFieldBytes, nickNameFieldChars, comma, value.getNickName());
+        out.writeTo('}');
+    }
+}
diff --git a/src/test/java/org/redkale/test/convert/json/_DyncWorldJsonEncoder.java b/src/test/java/org/redkale/test/convert/json/_DyncWorldJsonEncoder.java
index 86a33b9b2..d53fe1659 100644
--- a/src/test/java/org/redkale/test/convert/json/_DyncWorldJsonEncoder.java
+++ b/src/test/java/org/redkale/test/convert/json/_DyncWorldJsonEncoder.java
@@ -13,8 +13,9 @@ import org.redkale.convert.json.*;
 public class _DyncWorldJsonEncoder extends JsonDynEncoder<World> {
 
     protected final byte[] idFieldBytes = "\"id\":".getBytes();
-
+    protected final char[] idFieldChars = "\"id\":".toCharArray();
     protected final byte[] randomNumberFieldBytes = ",\"randomNumber\":".getBytes();
+    protected final char[] randomNumberFieldChars = ",\"randomNumber\":".toCharArray();
 
     public _DyncWorldJsonEncoder(JsonFactory factory, Type type, ObjectEncoder objectEncoderSelf) {
         super(factory, type, objectEncoderSelf);
@@ -33,13 +34,8 @@ public class _DyncWorldJsonEncoder extends JsonDynEncoder<World> {
 
         out.writeTo('{');
         boolean comma = false;
-
-        out.writeTo(idFieldBytes);
-        out.writeInt(value.getId());
-
-        out.writeTo(randomNumberFieldBytes);
-        out.writeInt(value.getRandomNumber());
-
+        comma = out.writeFieldIntValue(idFieldBytes, idFieldChars, comma, value.getId());
+        comma = out.writeFieldIntValue(randomNumberFieldBytes, randomNumberFieldChars, comma, value.getRandomNumber());
         out.writeTo('}');
     }
 }
diff --git a/src/test/java/org/redkale/test/convert/pb/UserTest.java b/src/test/java/org/redkale/test/convert/pb/UserTest.java
index 877fb1643..009abece4 100644
--- a/src/test/java/org/redkale/test/convert/pb/UserTest.java
+++ b/src/test/java/org/redkale/test/convert/pb/UserTest.java
@@ -4,6 +4,7 @@
  */
 package org.redkale.test.convert.pb;
 
+import org.redkale.test.convert.User;
 import java.io.Serializable;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
diff --git a/src/test/java/org/redkale/test/util/SelectColumnTest.java b/src/test/java/org/redkale/test/util/SelectColumnTest.java
index 9611341da..d9678e3fc 100644
--- a/src/test/java/org/redkale/test/util/SelectColumnTest.java
+++ b/src/test/java/org/redkale/test/util/SelectColumnTest.java
@@ -23,7 +23,7 @@ public class SelectColumnTest {
 
     @Test
     public void run1() throws Exception {
-        SelectColumn sel = SelectColumn.includes(User::getUserId, User::getUserName);
+        SelectColumn sel = SelectColumn.includes(UserEntry::getUserId, UserEntry::getUserName);
         SelectColumn sel2 = SelectColumn.includes("userId", "userName");
         Assertions.assertTrue(sel.equals(sel2));
         sel.setPatterns(new Pattern[] {Pattern.compile("aaa")});
@@ -34,7 +34,7 @@ public class SelectColumnTest {
         Assertions.assertEquals("aaa", pattern.pattern());
     }
 
-    public static class User {
+    public static class UserEntry {
 
         private long userId;