diff --git a/src/org/redkale/convert/ArrayDecoder.java b/src/org/redkale/convert/ArrayDecoder.java
index 779ef4ada..4af0253e1 100644
--- a/src/org/redkale/convert/ArrayDecoder.java
+++ b/src/org/redkale/convert/ArrayDecoder.java
@@ -89,8 +89,8 @@ public class ArrayDecoder<T> implements Decodeable<Reader, T[]> {
         boolean first = true;
         if (len == Reader.SIGN_NOLENGTH) {
             int startPosition = in.position();
-            while (in.hasNext(this, member, startPosition, contentLength)) {
-                Reader itemReader = getArrayItemReader(in, member, first);
+            while (hasNext(in, member, startPosition, contentLength, first)) {
+                Reader itemReader = getItemReader(in, member, first);
                 result.add(readMemberValue(itemReader, member, first));
                 first = false;
             }
@@ -104,7 +104,11 @@ public class ArrayDecoder<T> implements Decodeable<Reader, T[]> {
         return result.toArray(rs);
     }
 
-    protected Reader getArrayItemReader(Reader in, DeMember member, boolean first) {
+    protected boolean hasNext(Reader in, DeMember member, int startPosition, int contentLength, boolean first) {
+        return in.hasNext(startPosition, contentLength);
+    }
+
+    protected Reader getItemReader(Reader in, DeMember member, boolean first) {
         return in;
     }
 
diff --git a/src/org/redkale/convert/CollectionDecoder.java b/src/org/redkale/convert/CollectionDecoder.java
index ccd7b2ab7..ad87fb639 100644
--- a/src/org/redkale/convert/CollectionDecoder.java
+++ b/src/org/redkale/convert/CollectionDecoder.java
@@ -89,8 +89,9 @@ public class CollectionDecoder<T> implements Decodeable<Reader, Collection<T>> {
         boolean first = true;
         if (len == Reader.SIGN_NOLENGTH) {
             int startPosition = in.position();
-            while (in.hasNext(this, member, startPosition, contentLength)) {
-                result.add(readMemberValue(in, member, first));
+            while (hasNext(in, member, startPosition, contentLength, first)) {
+                Reader itemReader = getItemReader(in, member, first);
+                result.add(readMemberValue(itemReader, member, first));
                 first = false;
             }
         } else {
@@ -102,6 +103,14 @@ public class CollectionDecoder<T> implements Decodeable<Reader, Collection<T>> {
         return result;
     }
 
+    protected boolean hasNext(Reader in, DeMember member, int startPosition, int contentLength, boolean first) {
+        return in.hasNext(startPosition, contentLength);
+    }
+
+    protected Reader getItemReader(Reader in, DeMember member, boolean first) {
+        return in;
+    }
+    
     protected T readMemberValue(Reader in, DeMember member, boolean first) {
         return this.decoder.convertFrom(in);
     }
diff --git a/src/org/redkale/convert/MapDecoder.java b/src/org/redkale/convert/MapDecoder.java
index a4703f380..fccf625d9 100644
--- a/src/org/redkale/convert/MapDecoder.java
+++ b/src/org/redkale/convert/MapDecoder.java
@@ -102,8 +102,8 @@ public class MapDecoder<K, V> implements Decodeable<Reader, Map<K, V>> {
         boolean first = true;
         if (len == Reader.SIGN_NOLENGTH) {
             int startPosition = in.position();
-            while (in.hasNext(this, member, startPosition, contentLength)) {
-                Reader entryReader = getMapEntryReader(in, member, first);
+            while (hasNext(in, member, startPosition, contentLength, first)) {
+                Reader entryReader = getEntryReader(in, member, first);
                 K key = readKeyMember(entryReader, member, first);
                 entryReader.readBlank();
                 V value = readValueMember(entryReader, member, first);
@@ -123,7 +123,11 @@ public class MapDecoder<K, V> implements Decodeable<Reader, Map<K, V>> {
         return result;
     }
 
-    protected Reader getMapEntryReader(Reader in, DeMember member, boolean first) {
+    protected boolean hasNext(Reader in, DeMember member, int startPosition, int contentLength, boolean first) {
+        return in.hasNext(startPosition, contentLength);
+    }
+
+    protected Reader getEntryReader(Reader in, DeMember member, boolean first) {
         return in;
     }
 
diff --git a/src/org/redkale/convert/ObjectDecoder.java b/src/org/redkale/convert/ObjectDecoder.java
index 19c81ddae..13faa47f7 100644
--- a/src/org/redkale/convert/ObjectDecoder.java
+++ b/src/org/redkale/convert/ObjectDecoder.java
@@ -222,7 +222,7 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
         if (this.creatorConstructorMembers == null) {  //空构造函数
             final T result = this.creator.create();
             boolean first = true;
-            while (hasNext(in)) {
+            while (hasNext(in, first)) {
                 DeMember member = in.readFieldName(members);
                 in.readBlank();
                 if (member == null) {
@@ -230,8 +230,8 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
                 } else {
                     readMemberValue(in, member, result, first);
                 }
+                first = false;
             }
-            first = false;
             in.readObjectE(typeClass);
             return result;
         } else {  //带参数的构造函数
@@ -240,7 +240,7 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
             final Object[][] otherParams = new Object[this.members.length][2];
             int oc = 0;
             boolean first = true;
-            while (hasNext(in)) {
+            while (hasNext(in, first)) {
                 DeMember member = in.readFieldName(members);
                 in.readBlank();
                 if (member == null) {
@@ -269,7 +269,7 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
         }
     }
 
-    protected boolean hasNext(R in) {
+    protected boolean hasNext(R in, boolean first) {
         return in.hasNext();
     }
 
diff --git a/src/org/redkale/convert/Reader.java b/src/org/redkale/convert/Reader.java
index cd53829db..b20264008 100644
--- a/src/org/redkale/convert/Reader.java
+++ b/src/org/redkale/convert/Reader.java
@@ -28,14 +28,12 @@ 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 self          Decodeable
-     * @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(Decodeable self, DeMember member, int startPosition, int contentLength);
+    public abstract boolean hasNext(int startPosition, int contentLength);
 
     /**
      * 是否还存在下个元素或字段
@@ -44,7 +42,7 @@ public abstract class Reader {
      * @return 是否还存在下个元素或字段
      */
     public boolean hasNext() {
-        return hasNext(null, null, -1, -1);
+        return hasNext(-1, -1);
     }
 
     /**
diff --git a/src/org/redkale/convert/StreamDecoder.java b/src/org/redkale/convert/StreamDecoder.java
index fee7efb7b..8126bbd85 100644
--- a/src/org/redkale/convert/StreamDecoder.java
+++ b/src/org/redkale/convert/StreamDecoder.java
@@ -85,8 +85,9 @@ public class StreamDecoder<T> implements Decodeable<Reader, Stream<T>> {
         boolean first = true;
         if (len == Reader.SIGN_NOLENGTH) {
             int startPosition = in.position();
-            while (in.hasNext(this, member, startPosition, contentLength)) {
-                result.add(readMemberValue(in, member, first));
+            while (hasNext(in, member, startPosition, contentLength, first)) {
+                Reader itemReader = getItemReader(in, member, first);
+                result.add(readMemberValue(itemReader, member, first));
                 first = false;
             }
         } else {
@@ -98,6 +99,14 @@ public class StreamDecoder<T> implements Decodeable<Reader, Stream<T>> {
         return result.stream();
     }
 
+    protected boolean hasNext(Reader in, DeMember member, int startPosition, int contentLength, boolean first) {
+        return in.hasNext(startPosition, contentLength);
+    }
+
+    protected Reader getItemReader(Reader in, DeMember member, boolean first) {
+        return in;
+    }
+
     protected T readMemberValue(Reader in, DeMember member, boolean first) {
         return this.decoder.convertFrom(in);
     }
diff --git a/src/org/redkale/convert/bson/BsonReader.java b/src/org/redkale/convert/bson/BsonReader.java
index 7efd5a6a7..609a77f6d 100644
--- a/src/org/redkale/convert/bson/BsonReader.java
+++ b/src/org/redkale/convert/bson/BsonReader.java
@@ -215,15 +215,13 @@ public class BsonReader extends Reader {
     /**
      * 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 self          Decodeable
-     * @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(Decodeable self, DeMember member, int startPosition, int contentLength) {
+    public boolean hasNext(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)
@@ -276,7 +274,7 @@ public class BsonReader extends Reader {
             int size = 0;
             byte[] data = new byte[8];
             int startPosition = position();
-            while (hasNext(null, null, startPosition, contentLength)) {
+            while (hasNext(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 18e5fc481..64e1271ea 100644
--- a/src/org/redkale/convert/ext/BoolArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/BoolArraySimpledCoder.java
@@ -53,7 +53,7 @@ public final class BoolArraySimpledCoder<R extends Reader, W extends Writer> ext
             int size = 0;
             boolean[] data = new boolean[8];
             int startPosition = in.position();
-            while (in.hasNext(this, null, startPosition, contentLength)) {
+            while (in.hasNext(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 1f72c00e0..99bb5b0ef 100644
--- a/src/org/redkale/convert/ext/ByteBufferSimpledCoder.java
+++ b/src/org/redkale/convert/ext/ByteBufferSimpledCoder.java
@@ -54,7 +54,7 @@ public final class ByteBufferSimpledCoder<R extends Reader, W extends Writer> ex
             int size = 0;
             byte[] data = new byte[8];
             int startPosition = in.position();
-            while (in.hasNext(this, null, startPosition, contentLength)) {
+            while (in.hasNext(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 f806b443f..5f738aa59 100644
--- a/src/org/redkale/convert/ext/CharArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/CharArraySimpledCoder.java
@@ -53,7 +53,7 @@ public final class CharArraySimpledCoder<R extends Reader, W extends Writer> ext
             int size = 0;
             char[] data = new char[8];
             int startPosition = in.position();
-            while (in.hasNext(this, null, startPosition, contentLength)) {
+            while (in.hasNext(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 1e6fb0719..5b9f7cd0c 100644
--- a/src/org/redkale/convert/ext/DoubleArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/DoubleArraySimpledCoder.java
@@ -54,7 +54,7 @@ public final class DoubleArraySimpledCoder<R extends Reader, W extends Writer> e
             int size = 0;
             double[] data = new double[8];
             int startPosition = in.position();
-            while (in.hasNext(this, null, startPosition, contentLength)) {
+            while (in.hasNext(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 97711e764..f1963c84d 100644
--- a/src/org/redkale/convert/ext/FloatArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/FloatArraySimpledCoder.java
@@ -53,7 +53,7 @@ public final class FloatArraySimpledCoder<R extends Reader, W extends Writer> ex
             int size = 0;
             float[] data = new float[8];
             int startPosition = in.position();
-            while (in.hasNext(this, null, startPosition, contentLength)) {
+            while (in.hasNext(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 dfd701a4e..c72cf841f 100644
--- a/src/org/redkale/convert/ext/IntArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/IntArraySimpledCoder.java
@@ -54,7 +54,7 @@ public final class IntArraySimpledCoder<R extends Reader, W extends Writer> exte
             int size = 0;
             int[] data = new int[8];
             int startPosition = in.position();
-            while (in.hasNext(this, null, startPosition, contentLength)) {
+            while (in.hasNext(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 8196a9024..d5017ccca 100644
--- a/src/org/redkale/convert/ext/LongArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/LongArraySimpledCoder.java
@@ -54,7 +54,7 @@ public final class LongArraySimpledCoder<R extends Reader, W extends Writer> ext
             int size = 0;
             long[] data = new long[8];
             int startPosition = in.position();
-            while (in.hasNext(this, null, startPosition, contentLength)) {
+            while (in.hasNext(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 74c9589f7..8b5b48079 100644
--- a/src/org/redkale/convert/ext/ShortArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/ShortArraySimpledCoder.java
@@ -53,7 +53,7 @@ public final class ShortArraySimpledCoder<R extends Reader, W extends Writer> ex
             int size = 0;
             short[] data = new short[8];
             int startPosition = in.position();
-            while (in.hasNext(this, null, startPosition, contentLength)) {
+            while (in.hasNext(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 3b0c6cffc..aa109989d 100644
--- a/src/org/redkale/convert/ext/StringArraySimpledCoder.java
+++ b/src/org/redkale/convert/ext/StringArraySimpledCoder.java
@@ -55,7 +55,7 @@ public final class StringArraySimpledCoder<R extends Reader, W extends Writer> e
             int size = 0;
             String[] data = new String[8];
             int startPosition = in.position();
-            while (in.hasNext(this, member, startPosition, contentLength)) {
+            while (in.hasNext(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 b0b675423..1c1085b32 100644
--- a/src/org/redkale/convert/json/JsonByteBufferReader.java
+++ b/src/org/redkale/convert/json/JsonByteBufferReader.java
@@ -159,15 +159,13 @@ 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 self          Decodeable
-     * @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(Decodeable self, DeMember member, int startPosition, int contentLength) {
+    public boolean hasNext(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 6e7eef6ee..44c0d0da1 100644
--- a/src/org/redkale/convert/json/JsonReader.java
+++ b/src/org/redkale/convert/json/JsonReader.java
@@ -263,15 +263,13 @@ public class JsonReader extends Reader {
     /**
      * 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 self          Decodeable
-     * @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(Decodeable self, DeMember member, int startPosition, int contentLength) {
+    public boolean hasNext(int startPosition, int contentLength) {
         char ch = this.text[++this.position];
         if (ch == ',') return true;
         if (ch == '}' || ch == ']') return false;
@@ -487,7 +485,7 @@ public class JsonReader extends Reader {
             int size = 0;
             byte[] data = new byte[8];
             int startPosition = position();
-            while (hasNext(null, null, startPosition, contentLength)) {
+            while (hasNext(startPosition, contentLength)) {
                 if (size >= data.length) {
                     byte[] newdata = new byte[data.length + 4];
                     System.arraycopy(data, 0, newdata, 0, size);