diff --git a/examples/napitutorials/entry/src/main/cpp/javascriptapi/jsobjectwrap/napiwrap.cpp b/examples/napitutorials/entry/src/main/cpp/javascriptapi/jsobjectwrap/napiwrap.cpp
index 61f1d6b5b7a3ed59e8a5aad835c0735b5214d5ec..fca853d2054c370811b8607e1d4c2bfa2761ab4a 100644
--- a/examples/napitutorials/entry/src/main/cpp/javascriptapi/jsobjectwrap/napiwrap.cpp
+++ b/examples/napitutorials/entry/src/main/cpp/javascriptapi/jsobjectwrap/napiwrap.cpp
@@ -17,20 +17,19 @@
 #include "javascriptapi.h"
 
 static const char *TAG = "[javascriptapi_object_wrap]";
+static const int MAX_BUFFER_SIZE = 128;
 
 class Node {
 public:
     Node(napi_env env, napi_value id)
     {
         // 将 JavaScript 字符串转换为 C++ 字符串
-        size_t idLength;
-        napi_get_value_string_utf8(env, id, nullptr, 0, &idLength);
-        char *buffer = new char[idLength + 1];
-        napi_get_value_string_utf8(env, id, buffer, idLength + 1, nullptr);
+        size_t idLength = MAX_BUFFER_SIZE;
+        char buf[MAX_BUFFER_SIZE];
+        char *buffer = buf;
+        napi_get_value_string_utf8(env, id, buffer, idLength, nullptr);
         // 将 C++ 字符串转换为 std::string
         _id = std::string(buffer);
-        // 释放分配的内存
-        delete[] buffer;
     }
     std::string GetId() { return _id; }
 private:
@@ -45,7 +44,6 @@ napi_value testNapiWrap(napi_env env, napi_callback_info info)
     void *data = nullptr;
     napi_status status;
     napi_value cons;
-    
     const napi_extended_error_info *extended_error_info;
     // 获取回调函数的参数信息
     status = napi_get_cb_info(env, info, &argc, argv, &thisObj, &data);
@@ -74,4 +72,3 @@ napi_value testNapiWrap(napi_env env, napi_callback_info info)
     }
     return thisObj;
 }
-