diff --git a/src/org/redkale/convert/ArrayDecoder.java b/src/org/redkale/convert/ArrayDecoder.java
index e274ef193..243dff187 100644
--- a/src/org/redkale/convert/ArrayDecoder.java
+++ b/src/org/redkale/convert/ArrayDecoder.java
@@ -70,7 +70,7 @@ public class ArrayDecoder<T> implements Decodeable<Reader, T[]> {
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = in.readMemberContentLength(member);
+            contentLength = in.readMemberContentLength(member, decoder);
             len = Reader.SIGN_NOLENGTH;
         }
         if (this.decoder == null) {
@@ -89,7 +89,7 @@ public class ArrayDecoder<T> implements Decodeable<Reader, T[]> {
         boolean first = true;
         if (len == Reader.SIGN_NOLENGTH) {
             int startPosition = in.position();
-            while (in.hasNext(startPosition, contentLength)) {
+            while (in.hasNext(member, startPosition, contentLength)) {
                 result.add(readMemberValue(in, member, first));
                 first = false;
             }
diff --git a/src/org/redkale/convert/CollectionDecoder.java b/src/org/redkale/convert/CollectionDecoder.java
index b42e4fe0f..090c8a561 100644
--- a/src/org/redkale/convert/CollectionDecoder.java
+++ b/src/org/redkale/convert/CollectionDecoder.java
@@ -70,7 +70,7 @@ public class CollectionDecoder<T> implements Decodeable<Reader, Collection<T>> {
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = in.readMemberContentLength(member);
+            contentLength = in.readMemberContentLength(member, decoder);
             len = Reader.SIGN_NOLENGTH;
         }
         if (this.decoder == null) {
@@ -89,7 +89,7 @@ public class CollectionDecoder<T> implements Decodeable<Reader, Collection<T>> {
         boolean first = true;
         if (len == Reader.SIGN_NOLENGTH) {
             int startPosition = in.position();
-            while (in.hasNext(startPosition, contentLength)) {
+            while (in.hasNext(member, startPosition, contentLength)) {
                 result.add(readMemberValue(in, member, first));
                 first = false;
             }
diff --git a/src/org/redkale/convert/MapDecoder.java b/src/org/redkale/convert/MapDecoder.java
index 14df1dc50..87a1dfe6b 100644
--- a/src/org/redkale/convert/MapDecoder.java
+++ b/src/org/redkale/convert/MapDecoder.java
@@ -95,14 +95,14 @@ public class MapDecoder<K, V> implements Decodeable<Reader, Map<K, V>> {
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = in.readMemberContentLength(member);
+            contentLength = in.readMemberContentLength(member, null);
             len = Reader.SIGN_NOLENGTH;
         }
         final Map<K, V> result = this.creator.create();
         boolean first = true;
         if (len == Reader.SIGN_NOLENGTH) {
             int startPosition = in.position();
-            while (in.hasNext(startPosition, contentLength)) {
+            while (in.hasNext(member, startPosition, contentLength)) {
                 Reader entryReader = getMapEntryReader(in, member, first);
                 K key = readKeyMember(entryReader, member, first);
                 entryReader.readBlank();
diff --git a/src/org/redkale/convert/Reader.java b/src/org/redkale/convert/Reader.java
index 6e40d3209..faf957029 100644
--- a/src/org/redkale/convert/Reader.java
+++ b/src/org/redkale/convert/Reader.java
@@ -28,12 +28,13 @@ public abstract class Reader {
      * 是否还存在下个元素或字段 <br>
      * 注意: 主要用于Array、Collection、Stream或Map等集合对象
      *
+     * @param member        DeMember
      * @param startPosition 起始位置
      * @param contentLength 内容大小， 不确定的传-1
      *
      * @return 是否还存在下个元素或字段
      */
-    public abstract boolean hasNext(int startPosition, int contentLength);
+    public abstract boolean hasNext(DeMember member, int startPosition, int contentLength);
 
     /**
      * 是否还存在下个元素或字段
@@ -42,7 +43,7 @@ public abstract class Reader {
      * @return 是否还存在下个元素或字段
      */
     public boolean hasNext() {
-        return hasNext(-1, -1);
+        return hasNext(null, -1, -1);
     }
 
     /**
@@ -56,11 +57,12 @@ public abstract class Reader {
      * 读取字段值内容的字节数 <br>
      * 只有在readXXXB方法返回SIGN_NOLENBUTBYTES值才会调用此方法
      *
-     * @param member DeMember
+     * @param member  DeMember
+     * @param decoder Decodeable
      *
      * @return 内容大小， 不确定返回-1
      */
-    public abstract int readMemberContentLength(DeMember member);
+    public abstract int readMemberContentLength(DeMember member, Decodeable decoder);
 
     /**
      * 跳过值(不包含值前面的字段)
diff --git a/src/org/redkale/convert/StreamDecoder.java b/src/org/redkale/convert/StreamDecoder.java
index d84190e21..295f37dfa 100644
--- a/src/org/redkale/convert/StreamDecoder.java
+++ b/src/org/redkale/convert/StreamDecoder.java
@@ -66,7 +66,7 @@ public class StreamDecoder<T> implements Decodeable<Reader, Stream<T>> {
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = in.readMemberContentLength(member);
+            contentLength = in.readMemberContentLength(member, this.decoder);
             len = Reader.SIGN_NOLENGTH;
         }
         if (this.decoder == null) {
@@ -85,7 +85,7 @@ public class StreamDecoder<T> implements Decodeable<Reader, Stream<T>> {
         boolean first = true;
         if (len == Reader.SIGN_NOLENGTH) {
             int startPosition = in.position();
-            while (in.hasNext(startPosition, contentLength)) {
+            while (in.hasNext(member, startPosition, contentLength)) {
                 result.add(readMemberValue(in, member, first));
                 first = false;
             }
diff --git a/src/org/redkale/convert/bson/BsonReader.java b/src/org/redkale/convert/bson/BsonReader.java
index de14e7ce7..2b1d59902 100644
--- a/src/org/redkale/convert/bson/BsonReader.java
+++ b/src/org/redkale/convert/bson/BsonReader.java
@@ -208,7 +208,7 @@ public class BsonReader extends Reader {
     }
 
     @Override
-    public int readMemberContentLength(DeMember member) {
+    public int readMemberContentLength(DeMember member, Decodeable decoder) {
         return -1;
     }
 
@@ -221,7 +221,7 @@ public class BsonReader extends Reader {
      * @return 是否存在
      */
     @Override
-    public boolean hasNext(int startPosition, int contentLength) {
+    public boolean hasNext(DeMember member, int startPosition, int contentLength) {
         byte b = readByte();
         if (b == SIGN_HASNEXT) return true;
         if (b != SIGN_NONEXT) throw new ConvertException("hasNext option must be (" + (SIGN_HASNEXT)
@@ -267,14 +267,14 @@ public class BsonReader extends Reader {
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = readMemberContentLength(null);
+            contentLength = readMemberContentLength(null, null);
             len = Reader.SIGN_NOLENGTH;
         }
         if (len == Reader.SIGN_NOLENGTH) {
             int size = 0;
             byte[] data = new byte[8];
             int startPosition = position();
-            while (hasNext(startPosition, contentLength)) {
+            while (hasNext(null, startPosition, contentLength)) {
                 if (size >= data.length) {
                     byte[] newdata = new byte[data.length + 4];
                     System.arraycopy(data, 0, newdata, 0, size);
diff --git a/src/org/redkale/convert/ext/BoolArraySimpledCoder.java b/src/org/redkale/convert/ext/BoolArraySimpledCoder.java
index dc05864a9..616ba7fcc 100644
--- a/src/org/redkale/convert/ext/BoolArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/BoolArraySimpledCoder.java
@@ -46,14 +46,14 @@ public final class BoolArraySimpledCoder<R extends Reader, W extends Writer> ext
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = in.readMemberContentLength(null);
+            contentLength = in.readMemberContentLength(null, BoolSimpledCoder.instance);
             len = Reader.SIGN_NOLENGTH;
         }
         if (len == Reader.SIGN_NOLENGTH) {
             int size = 0;
             boolean[] data = new boolean[8];
             int startPosition = in.position();
-            while (in.hasNext(startPosition, contentLength)) {
+            while (in.hasNext(null, startPosition, contentLength)) {
                 if (size >= data.length) {
                     boolean[] newdata = new boolean[data.length + 4];
                     System.arraycopy(data, 0, newdata, 0, size);
diff --git a/src/org/redkale/convert/ext/ByteBufferSimpledCoder.java b/src/org/redkale/convert/ext/ByteBufferSimpledCoder.java
index 54781e025..e89b5394d 100644
--- a/src/org/redkale/convert/ext/ByteBufferSimpledCoder.java
+++ b/src/org/redkale/convert/ext/ByteBufferSimpledCoder.java
@@ -47,14 +47,14 @@ public final class ByteBufferSimpledCoder<R extends Reader, W extends Writer> ex
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = in.readMemberContentLength(null);
+            contentLength = in.readMemberContentLength(null, ByteSimpledCoder.instance);
             len = Reader.SIGN_NOLENGTH;
         }
         if (len == Reader.SIGN_NOLENGTH) {
             int size = 0;
             byte[] data = new byte[8];
             int startPosition = in.position();
-            while (in.hasNext(startPosition, contentLength)) {
+            while (in.hasNext(null, startPosition, contentLength)) {
                 if (size >= data.length) {
                     byte[] newdata = new byte[data.length + 4];
                     System.arraycopy(data, 0, newdata, 0, size);
diff --git a/src/org/redkale/convert/ext/CharArraySimpledCoder.java b/src/org/redkale/convert/ext/CharArraySimpledCoder.java
index 3e0a07416..c7289a7c8 100644
--- a/src/org/redkale/convert/ext/CharArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/CharArraySimpledCoder.java
@@ -46,14 +46,14 @@ public final class CharArraySimpledCoder<R extends Reader, W extends Writer> ext
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = in.readMemberContentLength(null);
+            contentLength = in.readMemberContentLength(null, CharSimpledCoder.instance);
             len = Reader.SIGN_NOLENGTH;
         }
         if (len == Reader.SIGN_NOLENGTH) {
             int size = 0;
             char[] data = new char[8];
             int startPosition = in.position();
-            while (in.hasNext(startPosition, contentLength)) {
+            while (in.hasNext(null, startPosition, contentLength)) {
                 if (size >= data.length) {
                     char[] newdata = new char[data.length + 4];
                     System.arraycopy(data, 0, newdata, 0, size);
diff --git a/src/org/redkale/convert/ext/DoubleArraySimpledCoder.java b/src/org/redkale/convert/ext/DoubleArraySimpledCoder.java
index b62894877..4e826dc9a 100644
--- a/src/org/redkale/convert/ext/DoubleArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/DoubleArraySimpledCoder.java
@@ -47,14 +47,14 @@ public final class DoubleArraySimpledCoder<R extends Reader, W extends Writer> e
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = in.readMemberContentLength(null);
+            contentLength = in.readMemberContentLength(null, DoubleSimpledCoder.instance);
             len = Reader.SIGN_NOLENGTH;
         }
         if (len == Reader.SIGN_NOLENGTH) {
             int size = 0;
             double[] data = new double[8];
             int startPosition = in.position();
-            while (in.hasNext(startPosition, contentLength)) {
+            while (in.hasNext(null, startPosition, contentLength)) {
                 if (size >= data.length) {
                     double[] newdata = new double[data.length + 4];
                     System.arraycopy(data, 0, newdata, 0, size);
diff --git a/src/org/redkale/convert/ext/FloatArraySimpledCoder.java b/src/org/redkale/convert/ext/FloatArraySimpledCoder.java
index 960c52548..b8de258fb 100644
--- a/src/org/redkale/convert/ext/FloatArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/FloatArraySimpledCoder.java
@@ -46,14 +46,14 @@ public final class FloatArraySimpledCoder<R extends Reader, W extends Writer> ex
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = in.readMemberContentLength(null);
+            contentLength = in.readMemberContentLength(null, FloatSimpledCoder.instance);
             len = Reader.SIGN_NOLENGTH;
         }
         if (len == Reader.SIGN_NOLENGTH) {
             int size = 0;
             float[] data = new float[8];
             int startPosition = in.position();
-            while (in.hasNext(startPosition, contentLength)) {
+            while (in.hasNext(null, startPosition, contentLength)) {
                 if (size >= data.length) {
                     float[] newdata = new float[data.length + 4];
                     System.arraycopy(data, 0, newdata, 0, size);
diff --git a/src/org/redkale/convert/ext/IntArraySimpledCoder.java b/src/org/redkale/convert/ext/IntArraySimpledCoder.java
index f931840e8..96263ce23 100644
--- a/src/org/redkale/convert/ext/IntArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/IntArraySimpledCoder.java
@@ -47,14 +47,14 @@ public final class IntArraySimpledCoder<R extends Reader, W extends Writer> exte
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = in.readMemberContentLength(null);
+            contentLength = in.readMemberContentLength(null, IntSimpledCoder.instance);
             len = Reader.SIGN_NOLENGTH;
         }
         if (len == Reader.SIGN_NOLENGTH) {
             int size = 0;
             int[] data = new int[8];
             int startPosition = in.position();
-            while (in.hasNext(startPosition, contentLength)) {
+            while (in.hasNext(null, startPosition, contentLength)) {
                 if (size >= data.length) {
                     int[] newdata = new int[data.length + 4];
                     System.arraycopy(data, 0, newdata, 0, size);
diff --git a/src/org/redkale/convert/ext/LongArraySimpledCoder.java b/src/org/redkale/convert/ext/LongArraySimpledCoder.java
index 5c931496e..834c8955b 100644
--- a/src/org/redkale/convert/ext/LongArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/LongArraySimpledCoder.java
@@ -47,14 +47,14 @@ public final class LongArraySimpledCoder<R extends Reader, W extends Writer> ext
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = in.readMemberContentLength(null);
+            contentLength = in.readMemberContentLength(null, LongSimpledCoder.instance);
             len = Reader.SIGN_NOLENGTH;
         }
         if (len == Reader.SIGN_NOLENGTH) {
             int size = 0;
             long[] data = new long[8];
             int startPosition = in.position();
-            while (in.hasNext(startPosition, contentLength)) {
+            while (in.hasNext(null, startPosition, contentLength)) {
                 if (size >= data.length) {
                     long[] newdata = new long[data.length + 4];
                     System.arraycopy(data, 0, newdata, 0, size);
diff --git a/src/org/redkale/convert/ext/ShortArraySimpledCoder.java b/src/org/redkale/convert/ext/ShortArraySimpledCoder.java
index f3562c361..5494fb90f 100644
--- a/src/org/redkale/convert/ext/ShortArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/ShortArraySimpledCoder.java
@@ -46,14 +46,14 @@ public final class ShortArraySimpledCoder<R extends Reader, W extends Writer> ex
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = in.readMemberContentLength(null);
+            contentLength = in.readMemberContentLength(null, ShortSimpledCoder.instance);
             len = Reader.SIGN_NOLENGTH;
         }
         if (len == Reader.SIGN_NOLENGTH) {
             int size = 0;
             short[] data = new short[8];
             int startPosition = in.position();
-            while (in.hasNext(startPosition, contentLength)) {
+            while (in.hasNext(null, startPosition, contentLength)) {
                 if (size >= data.length) {
                     short[] newdata = new short[data.length + 4];
                     System.arraycopy(data, 0, newdata, 0, size);
diff --git a/src/org/redkale/convert/ext/StringArraySimpledCoder.java b/src/org/redkale/convert/ext/StringArraySimpledCoder.java
index 1894b76e1..d83fed70e 100644
--- a/src/org/redkale/convert/ext/StringArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/StringArraySimpledCoder.java
@@ -48,14 +48,14 @@ public final class StringArraySimpledCoder<R extends Reader, W extends Writer> e
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = in.readMemberContentLength(null);
+            contentLength = in.readMemberContentLength(null, StringSimpledCoder.instance);
             len = Reader.SIGN_NOLENGTH;
         }
         if (len == Reader.SIGN_NOLENGTH) {
             int size = 0;
             String[] data = new String[8];
             int startPosition = in.position();
-            while (in.hasNext(startPosition, contentLength)) {
+            while (in.hasNext(member, startPosition, contentLength)) {
                 if (size >= data.length) {
                     String[] newdata = new String[data.length + 4];
                     System.arraycopy(data, 0, newdata, 0, size);
diff --git a/src/org/redkale/convert/json/JsonByteBufferReader.java b/src/org/redkale/convert/json/JsonByteBufferReader.java
index 1c1085b32..2f1466a86 100644
--- a/src/org/redkale/convert/json/JsonByteBufferReader.java
+++ b/src/org/redkale/convert/json/JsonByteBufferReader.java
@@ -159,13 +159,14 @@ public class JsonByteBufferReader extends JsonReader {
     /**
      * 判断对象是否存在下一个属性或者数组是否存在下一个元素
      *
+     * @param member        DeMember
      * @param startPosition 起始位置
      * @param contentLength 内容大小， 不确定的传-1
      *
      * @return 是否存在
      */
     @Override
-    public boolean hasNext(int startPosition, int contentLength) {
+    public boolean hasNext(DeMember member, int startPosition, int contentLength) {
         char ch = nextGoodChar();
         if (ch == ',') return true;
         if (ch == '}' || ch == ']' || ch == 0) return false;
diff --git a/src/org/redkale/convert/json/JsonReader.java b/src/org/redkale/convert/json/JsonReader.java
index c6808d677..1cbe2fb06 100644
--- a/src/org/redkale/convert/json/JsonReader.java
+++ b/src/org/redkale/convert/json/JsonReader.java
@@ -256,7 +256,7 @@ public class JsonReader extends Reader {
     }
 
     @Override
-    public int readMemberContentLength(DeMember member) {
+    public int readMemberContentLength(DeMember member, Decodeable decoder) {
         return -1;
     }
 
@@ -269,7 +269,7 @@ public class JsonReader extends Reader {
      * @return 是否存在
      */
     @Override
-    public boolean hasNext(int startPosition, int contentLength) {
+    public boolean hasNext(DeMember member, int startPosition, int contentLength) {
         char ch = this.text[++this.position];
         if (ch == ',') return true;
         if (ch == '}' || ch == ']') return false;
@@ -478,14 +478,14 @@ public class JsonReader extends Reader {
         int contentLength = -1;
         if (len == Reader.SIGN_NULL) return null;
         if (len == Reader.SIGN_NOLENBUTBYTES) {
-            contentLength = readMemberContentLength(null);
+            contentLength = readMemberContentLength(null, null);
             len = Reader.SIGN_NOLENGTH;
         }
         if (len == Reader.SIGN_NOLENGTH) {
             int size = 0;
             byte[] data = new byte[8];
             int startPosition = position();
-            while (hasNext(startPosition, contentLength)) {
+            while (hasNext(null, startPosition, contentLength)) {
                 if (size >= data.length) {
                     byte[] newdata = new byte[data.length + 4];
                     System.arraycopy(data, 0, newdata, 0, size);