asp.net - ASP .Net Web API以二进制形式下载图像

Question

我想尝试使用Web API进行rest调用，但我希望响应是存储在数据库中的实际二进制图像，而不是JSON base64编码的字符串。有人对此有一些建议吗？

更新-
这是我最终实现的:

 HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.OK);
 result.Content = new StreamContent(new MemoryStream(profile.Avatar));
 result.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
 result.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment");
 result.Content.Headers.ContentDisposition.FileName = "avatar.png";
 return result;

Answer 1

您可以将响应内容设置为StreamContent对象:

        var fileStream = new FileStream(path, FileMode.Open);

        var resp = new HttpResponseMessage()
        {
            Content = new StreamContent(fileStream)
        };

        // Find the MIME type
        string mimeType = _extensions[Path.GetExtension(path)];
        resp.Content.Headers.ContentType = new MediaTypeHeaderValue(mimeType);