diff --git a/src/main/java/org/redkale/convert/ObjectDecoder.java b/src/main/java/org/redkale/convert/ObjectDecoder.java
index 880f01fb1..80096be9a 100644
--- a/src/main/java/org/redkale/convert/ObjectDecoder.java
+++ b/src/main/java/org/redkale/convert/ObjectDecoder.java
@@ -374,7 +374,7 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
         DeMemberInfo info = this.memberInfo;
         if (this.creatorConstructorMembers == null) { // 空构造函数
             final T result = this.creator == null ? null : this.creator.create();
-            do {
+            while (in.hasNext()) {
                 DeMember member = in.readField(info);
                 in.readColon();
                 if (member == null) {
@@ -383,7 +383,7 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
                     Object val = readDeMemberValue(in, member);
                     member.getAttribute().set(result, val);
                 }
-            } while (in.hasNext());
+            }
             in.readObjectE(typeClass);
             return result;
         } else { // 带参数的构造函数
@@ -391,7 +391,7 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
             final Object[] constructorParams = new Object[constructorFields.length];
             final Object[][] otherParams = new Object[info.length()][2];
             int oc = 0;
-            do { // in.hasNext()放在下面，因readObjectB已经读了{
+            while (in.hasNext()) {
                 DeMember member = in.readField(info);
                 in.readColon();
                 if (member == null) {
@@ -410,7 +410,7 @@ public class ObjectDecoder<R extends Reader, T> implements Decodeable<R, T> {
                         otherParams[oc++] = new Object[] {member.attribute, val};
                     }
                 }
-            } while (in.hasNext());
+            }
             in.readObjectE(typeClass);
             if (this.creator == null) {
                 return null;
diff --git a/src/test/java/org/redkale/test/convert/json/Json5Test.java b/src/test/java/org/redkale/test/convert/json/Json5Test.java
index 5a32cdb16..c9788b55b 100644
--- a/src/test/java/org/redkale/test/convert/json/Json5Test.java
+++ b/src/test/java/org/redkale/test/convert/json/Json5Test.java
@@ -5,7 +5,9 @@
  */
 package org.redkale.test.convert.json;
 
+import java.io.ByteArrayInputStream;
 import java.lang.reflect.Type;
+import java.nio.charset.StandardCharsets;
 import java.util.*;
 import org.junit.jupiter.api.*;
 import org.redkale.convert.Convert;
@@ -42,10 +44,17 @@ public class Json5Test {
         System.out.println(bean2.name);
         Assertions.assertTrue(bean.equals(bean2));
         System.out.println(convert.convertTo(bean2));
+        bean2 = convert.convertFrom(Json5Bean.class, new ByteArrayInputStream(json.getBytes(StandardCharsets.UTF_8)));
+        System.out.println(bean2.name);
+        Assertions.assertTrue(bean.equals(bean2));
+        System.out.println(convert.convertTo(bean2));
 
         String arrayJson = "[" + json + "," + json + "," + "]";
         Json5Bean[] beans = convert.convertFrom(Json5Bean[].class, arrayJson);
         System.out.println(convert.convertTo(beans));
+        beans = convert.convertFrom(
+                Json5Bean[].class, new ByteArrayInputStream(arrayJson.getBytes(StandardCharsets.UTF_8)));
+        System.out.println(convert.convertTo(beans));
 
         String intjson = "[1,2,3,4,]";
         int[] ints1 = convert.convertFrom(int[].class, intjson);
diff --git a/src/test/java/org/redkale/test/convert/json/JsonMainTest.java b/src/test/java/org/redkale/test/convert/json/JsonMainTest.java
index f78d0a0d2..37629d939 100644
--- a/src/test/java/org/redkale/test/convert/json/JsonMainTest.java
+++ b/src/test/java/org/redkale/test/convert/json/JsonMainTest.java
@@ -108,6 +108,9 @@ public class JsonMainTest {
         final JsonConvert convert = JsonConvert.root();
         long v = convert.convertFrom(long.class, "100");
         Assertions.assertEquals(100, v);
+        Map<String, String> map = convert.convertFrom(JsonConvert.TYPE_MAP_STRING_STRING, "{}");
+        Assertions.assertTrue(map.isEmpty());
+        convert.convertFrom(SimpleChildEntity.class, "{}");
     }
 
     @Test