asp dotnet core 提供大文件下载的测试

本文仅仅是提供测试使用的代码

提供文件下载只需要返回 PhysicalFile 方法，如下面代码

        [HttpGet]
        public IActionResult Get()
        {
            var folder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
            var file = Path.Combine(folder, "big file");
            const string mime = "application/octet-stream";

            return PhysicalFile(file, mime);
        }

本文的 big file 是程序运行创建的垃圾文件

        private void WriteBigFile()
        {
            var folder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
            var file = Path.Combine(folder, "big file");

            if (!File.Exists(file))
            {
                using (var stream = new FileStream(file, FileMode.Create))
                {
                    for (int i = 0; i < 100000000; i++)
                    {
                        stream.WriteByte(0);
                    }
                }
            }
        }