打印预览不能下载问题

Myshipping.Application/Service/BookingOrder/BookingOrderService.cs

@@ -2247,7 +2247,7 @@ namespace Myshipping.Application
 
 
 
-                fileName = $"{order.MBLNO}_{DateTime.Now.Ticks}";//名称
+                fileName = $"{order.MBLNO}_{DateTime.Now.Ticks}{fileType}";//名称
                 var opt = App.GetOptions<TempFileOptions>().Path;
                 var serverpath = Path.Combine(App.WebHostEnvironment.WebRootPath, opt);//服务器路径
                 if (!Directory.Exists(serverpath))
@@ -2528,8 +2528,14 @@ namespace Myshipping.Application
             if (File.Exists(fileFullName))
             {
                 _logger.LogInformation($"预览pdf文件：{fileFullName}");
-                var readMem = new ReadOnlyMemory<byte>(File.ReadAllBytes(fileFullName));
+
-                _httpContextAccessor.HttpContext.Response.BodyWriter.WriteAsync(readMem);
+                var sysConfig = _cache.GetAllSysConfig().Result;
+                var viewUrl = sysConfig.FirstOrDefault(x => x.Code == "booking_print_view_pdf_url");
+
+                //var readMem = new ReadOnlyMemory<byte>(File.ReadAllBytes(fileFullName));
+                //_httpContextAccessor.HttpContext.Response.BodyWriter.WriteAsync(readMem);
+                _httpContextAccessor.HttpContext.Response.StatusCode = 302;
+                _httpContextAccessor.HttpContext.Response.Headers["Location"] = $"{viewUrl.Value}{fn}";
             }
             else
             {