diff --git a/src/main/java/com/muyu/common/core/text/Convert.java b/src/main/java/com/muyu/common/core/text/Convert.java
index fb57cb9..b2312d3 100644
--- a/src/main/java/com/muyu/common/core/text/Convert.java
+++ b/src/main/java/com/muyu/common/core/text/Convert.java
@@ -699,28 +699,33 @@ public class Convert {
      *
      * @return 字符串
      */
-    public static String str (Object obj, Charset charset) {
-        if (null == obj) {
+    public static String str(Object obj, Charset charset) {
+        if (obj == null) {
             return null;
         }
 
         if (obj instanceof String) {
+            // 如果已经是String，则直接返回
             return (String) obj;
-        } else if (obj instanceof byte[] || obj instanceof Byte[]) {
-            if (obj instanceof byte[]) {
-                return str((byte[]) obj, charset);
-            } else {
-                Byte[] bytes = (Byte[]) obj;
-                int length = bytes.length;
-                byte[] dest = new byte[length];
-                for (int i = 0 ; i < length ; i++) {
-                    dest[i] = bytes[i];
-                }
-                return str(dest, charset);
+        } else if (obj instanceof byte[]) {
+            // 如果是byte[]，则使用charset进行编码转换
+            return new String((byte[]) obj, charset);
+        } else if (obj instanceof Byte[]) {
+            // 如果是Byte[]，先转换为byte[]，再进行编码转换
+            Byte[] bytes = (Byte[]) obj;
+            byte[] dest = new byte[bytes.length];
+            for (int i = 0; i < bytes.length; i++) {
+                dest[i] = bytes[i].byteValue(); // 使用byteValue()来避免自动拆箱
             }
+            return new String(dest, charset);
         } else if (obj instanceof ByteBuffer) {
-            return str((ByteBuffer) obj, charset);
+            // 如果是ByteBuffer，则根据position和limit进行转换
+            ByteBuffer buffer = (ByteBuffer) obj;
+            byte[] bytes = new byte[buffer.remaining()];
+            buffer.get(bytes); // 从buffer中读取到字节数组
+            return new String(bytes, charset);
         }
+        // 如果都不是，则调用对象的toString方法，这里不使用charset
         return obj.toString();
     }