public ActionResult ShowImage(string id)
{
if (id != null)
{
var context = HttpContext.GetOwinContext().Get <ApplicationDbContext>();
try
{
var decimalId = (Int32)UrlConvert.ToInt64(id);
var image = context.Images.FirstOrDefault <Image>(img => img.Id == decimalId) ?? null;
return(View(image));
}
catch (ArgumentException) { return(View()); }
}
else
{
return(View());
}
}
/// <summary>
/// 重写操作处理
/// </summary>
public void Apply(OpenApiDocument swaggerDoc, DocumentFilterContext context) => swaggerDoc.Paths =
UrlConvert.ConvertKeys(swaggerDoc.Paths, UrlConvert.FirstUpper);
public async Task <HttpResponseMessage> Post()
{
var result = new HttpResponseMessage();
string fileUrl;
// Get form data from POST message
var formData = await Request.Content.ReadAsMultipartAsync();
var imageBytes = formData.Contents[0].ReadAsByteArrayAsync().Result;
var thumbBytes = formData.Contents[1].ReadAsByteArrayAsync().Result;
var guidBytes = formData.Contents[2].ReadAsByteArrayAsync().Result;
var fileExt = formData.Contents[3].ReadAsStringAsync().Result;
// Decrypt received GUID
var cspParams = new CspParameters
{
KeyContainerName = "serverContainer",
Flags = CspProviderFlags.UseArchivableKey |
CspProviderFlags.UseMachineKeyStore
};
var serverRsa = new RSACryptoServiceProvider(2048, cspParams);
var decryptedGuid = serverRsa.Decrypt(guidBytes, true);
var userGuid = Encoding.Unicode.GetString(decryptedGuid);
// Identify the user by GUID
var usermanager = HttpContext.Current.GetOwinContext().GetUserManager <ApplicationUserManager>();
var user = await usermanager.FindByIdAsync(userGuid);
var usedSpace = user.FileSize_Total;
// Check if uploader is allowed to store this image
if (user != null)
{
if (usedSpace < ServerConstants.UserStorageSpace)
{
// Save image and thumbnail to disk and DB
var context = HttpContext.Current.GetOwinContext().Get <ApplicationDbContext>();
try
{
var image = new Image
{
Owner = user,
FileSize = imageBytes.Length,
Path = "",
ThumbnailPath = ""
};
user.FileSize_Total += image.FileSize;
context.Images.Add(image);
context.SaveChanges();
var fileName = UrlConvert.ToString((long)image.Id) + "." + fileExt;
var folderName = UrlConvert.ToStringCatalog((long)image.Id);
var virtualPath = "~/Images/" + folderName + "/";
var globalPath = System.Web.Hosting.HostingEnvironment.MapPath(virtualPath);
var thumbPath = globalPath + "Thumbs\\";
Directory.CreateDirectory(globalPath);
Directory.CreateDirectory(thumbPath);
var imageFilePath = globalPath + fileName;
var thumbFilePath = thumbPath + fileName;
File.WriteAllBytes(imageFilePath, imageBytes);
File.WriteAllBytes(thumbFilePath, thumbBytes);
image.Path = "~/Images/" + folderName + "/" + fileName;
image.ThumbnailPath = "~/Images/" + folderName + "/Thumbs/" + fileName;
fileUrl = "/Images/" + folderName + "/" + fileName;
context.SaveChanges();
}
catch (Exception e)
{
throw new HttpException(e.Message);
}
}
else
{
// Return "no disk space left"
result.StatusCode = HttpStatusCode.InternalServerError;
result.ReasonPhrase = "There is no disk space left for this account.";
return(result);
}
}
else
{
// Return "user not found"
result.StatusCode = HttpStatusCode.InternalServerError;
result.ReasonPhrase = "Specified user was not found.";
return(result);
}
// Return link for image to uploader
result.StatusCode = HttpStatusCode.OK;
result.Content = new StringContent(fileUrl, Encoding.Unicode);
//result.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
return(result);
}