活动报告http下载不能正常工作

Question

我试图在WebNetCore6.0中生成活动报告(v16)。对于这两种类型，浏览器中的结果总是“失败”。我做错什么了？

       [HttpGet("GetExcelReport")]
        public async Task<ActionResult> GetExcelReportAsync(string type)
        {
            var stream = GenerateDoc(type, Response);

            await stream.CopyToAsync(Response.Body);
            return new OkResult();
        }
        internal System.IO.Stream GenerateDoc(string type, HttpResponse response)
        {
            using (var reportStream =
                System.Reflection.Assembly.GetEntryAssembly().GetManifestResourceStream("App.Reports.Reports.PageReport1.rdlx"
                ))
            using (var reader = new System.IO.StreamReader(reportStream))
            {
                var rpt = new GrapeCity.ActiveReports.PageReport(reader);
                
                IRenderingExtension ri = null;

                if (type == "pdf")
                {
                    ri = new GrapeCity.ActiveReports.Export.Pdf.Page.PdfRenderingExtension();
                    Response.ContentType = "application/pdf";
                    Response.Headers.Add("content-disposition", $"attachment; filename=sdfgsdfg-sdfgsdf.pdf");
                }
                else
                {   
                    ri = new GrapeCity.ActiveReports.Export.Excel.Page.ExcelRenderingExtension();
                    Response.ContentType = "application/vnd.ms-excel";
                    Response.Headers.Add("content-disposition", $"attachment; filename=sdfgsdfg-sdfgsdf.xls");
                }

                var output = new GrapeCity.ActiveReports.Rendering.IO.MemoryStreamProvider();
                rpt.Document.Render(ri, output);
                return output.GetPrimaryStream().OpenStream();
            }
        }

​

​

Answer 1

假设您的该部件工具工作良好，您可以成功地获得流。

您可以检查Microsoft.AspNetCore.Mvc.ControllerBase类，并且可以找到返回FileResult的所有方法：

​

​

对于您的需求，您可以尝试以下方法

public virtual FileStreamResult File(Stream fileStream, string contentType, string? fileDownloadName)

我试过了，结果：

​

​

Answer 2

我改变了返回文件的方式。

 [HttpGet("GetExcelReport")]
        public IActionResult GetExcelReportAsync()
        {
            Assembly assembly = System.Reflection.Assembly.GetEntryAssembly() ?? throw new ArgumentNullException(nameof(System.Reflection.Assembly));
            using (var reportStream = assembly.GetManifestResourceStream("BFW.Reports.Reports.PageReport1.rdlx"))
                if (reportStream != null)
                {
                    using (var reader = new System.IO.StreamReader(reportStream))
                    {
                        var rpt = new GrapeCity.ActiveReports.PageReport(reader);

                        IRenderingExtension? re = null;

                        re = new GrapeCity.ActiveReports.Export.Excel.Page.ExcelRenderingExtension();

                        var output = new GrapeCity.ActiveReports.Rendering.IO.MemoryStreamProvider();

                        rpt.Document.Render(re, output);

                        return File(output.GetPrimaryStream().OpenStream(), "application/octet-stream", "excelfile.xlsx");
                    }
                }

            return NotFound();
        }