public FileContentResult Image(String uri)
{
String contentType = "";
String fileName = "";
DownloadFileRDto file;
try
{
FileRepository fileRespository = new FileRepository();
file = fileRespository.Download(uri);
fileName = file.FileName;
contentType = getImageContentType(fileName);
if (String.IsNullOrEmpty(contentType))
{
throw new Exception("this is not an image file ");
}
}
catch (Exception ex) {
return(null);
}
return(new FileContentResult(file.File, contentType));
}
/// <summary>
/// 设置文件名
/// </summary>
/// <param name="info"></param>
protected virtual void SetFileName(OrderProductEntity info)
{
if (info == null || !info.HasSaveProperty(it => it.Product.Id) || info.Product == null || info.Product.Id == 0 || info.FileByte != null)
{
return;
}
if (info.SaveType == SaveType.Modify)
{
var dataEntity = Repository.Get <OrderProductEntity>(info.Id);
if (dataEntity.Product != null && dataEntity.Product.Id == info.Product.Id)
{
info.FileName = dataEntity.FileName;
return;
}
}
var product = Repository.Get <ProductEntity>(info.Product.Id);
if (product == null)
{
return;
}
info.FileName = product.FileName;
if (string.IsNullOrEmpty(info.FileName))
{
product.Goods = Repository.Get <GoodsEntity>(product.Goods.Id);
info.FileName = product.Goods.FileName;
}
if (string.IsNullOrEmpty(info.FileName))
{
return;
}
info.FileName = string.Format("{0}.l{1}", info.FileName, Path.GetExtension(info.FileName));
info.FileByte = FileRepository.Download(info.FileName);
if (info.FileByte == null)
{
return;
}
info.FileName = string.Format("Files/Images/OrderItem/copy{0}", Path.GetExtension(info.FileName));
}
private async Task <ActionResult> BuildResponseFromMessage(Message message)
{
if (message == null)
{
return(new StatusCodeResult((int)System.Net.HttpStatusCode.NotFound));
}
var data = await FileRepository.Download(message.ContentId);
var contentTypes = message.Headers.Where(x => x.Key == "Content-Type");
var BadTypes = message.Headers.Where(x => x.Key == "Transfer-Encoding");
foreach (var h in message.Headers.Except(contentTypes).Except(BadTypes))
{
Response.Headers.Add(new KeyValuePair <string, StringValues>(h.Key, new StringValues(h.Values.ToArray())));
}
return(File(data,
contentTypes.Any() ?
contentTypes.First().Values.First() :
"application/x-binary"));
}