相关疑难解决方法(0)

如何创建Web API控制器,生成并返回从内存中JPEG文件(MemoryStream对象)集合流式传输的压缩zip文件.我正在尝试使用DotNetZip库.我找到了这个例子:http://www.4guysfromrolla.com/articles/092910-1.aspx#postadlink.但是,Response.OutputStream在Web API中不可用,因此该技术不能正常工作.因此我尝试将zip文件保存到新的MemoryStream中; 但它扔了.最后,我尝试使用PushStreamContent.这是我的代码:

    public HttpResponseMessage Get(string imageIDsList) {
        var imageIDs = imageIDsList.Split(',').Select(_ => int.Parse(_));
        var any = _dataContext.DeepZoomImages.Select(_ => _.ImageID).Where(_ => imageIDs.Contains(_)).Any();
        if (!any) {
            throw new HttpResponseException(new HttpResponseMessage(HttpStatusCode.NotFound));
        }
        var dzImages = _dataContext.DeepZoomImages.Where(_ => imageIDs.Contains(_.ImageID));
        using (var zipFile = new ZipFile()) {
            foreach (var dzImage in dzImages) {
                var bitmap = GetFullSizeBitmap(dzImage);
                var memoryStream = new MemoryStream();
                bitmap.Save(memoryStream, ImageFormat.Jpeg);
                var fileName = string.Format("{0}.jpg", dzImage.ImageName);
                zipFile.AddEntry(fileName, memoryStream);
            }
            var response = new HttpResponseMessage(HttpStatusCode.OK);
            var memStream …