HarmonyOS 能否将jni代码用napi表示？

可以考虑使用napi_create_buffer_copy或napi_create_buffer。

unsigned char *trans_data = NULL;
unsigned int trans_size = 0;
unsigned char *mem;
*mem = 'x';
unsigned int men_size = 100;

copy(mem, men_size, &trans_data, &trans_size);
delete [] mem;

napi_value result_buffer;
void** result_data;
napi_create_buffer_copy(env, trans_size, trans_data, result_data, &result_buffer);