static void SaveImage(byte[] imageBytes, string path)
{
using (var stream = new MemoryStream(imageBytes))
using (var img = Image.FromStream(stream)) {
Size size = new Size(ImageWidth, (int)img.Height * ImageWidth / img.Width);
using (Image thumbnail = new ImageThumbnailCreator(img).CreateImageThumbnail(size))
ImageUtils.SaveImage(thumbnail, path);
}
}
public IActionResult UploadFormFile(IFormFile file)
{
if (file == null)
{
throw new HttpBadRequestException("请将Content-Type设置application/x-www-form-urlencoded,然后在formData的file附上图标文件");
}
string iconExt = "";
Microsoft.Extensions.Primitives.StringValues headerVar;
Request.Headers.TryGetValue("fileExt", out headerVar); if (headerVar.Count > 0)
{
iconExt = headerVar[0].Trim();
}
if (string.IsNullOrWhiteSpace(iconExt))
{
throw new HttpBadRequestException("请在Headers上添加fileExt标识icon的扩展名");
}
iconExt = iconExt.Replace(".", string.Empty);
//先把文件保存到临时文件夹,计算md5
var tmpPath = Path.Combine(tmpFileFolder, $"{Guid.NewGuid()}.{iconExt}");
using (FileStream fs = System.IO.File.Create(tmpPath))
{
file.CopyTo(fs);
// 清空缓冲区数据
fs.Flush();
}
var md5 = MD5Gen.CalcFile(tmpPath);
var fileName = $"{md5}.{iconExt}";
var iconPath = Path.Combine(iconFolder, fileName);
//如果文件不存在资源文件夹,拷贝存储
if (!System.IO.File.Exists(iconPath))
{
System.IO.File.Copy(tmpPath, iconPath);
}
//为文件生成缩略图标
ImageThumbnailCreator.SaveImageThumbnails(iconPath);
//删除临时文件
if (System.IO.File.Exists(tmpPath))
{
System.IO.File.Delete(tmpPath);
}
return(Ok($"/{OSSConst.AppRouteArea}/{OSSConst.IconFolder}/{fileName}"));
}
protected void fileUpload_FileUploadComplete(object sender, FileUploadCompleteEventArgs e)
{
try
{
using (System.Drawing.Image original = System.Drawing.Image.FromStream(e.UploadedFile.FileContent))
using (System.Drawing.Image thumbnail = new ImageThumbnailCreator(original).CreateImageThumbnail(new Size(100, 100)))
Session["logo"] = imageToByteArray(thumbnail);
}
catch (Exception ex)
{
throw new Exception(Utilidades.validarExepcionSQL(ex), ex.InnerException);
}
}
protected string SavePostedFile(UploadedFile uploadedFile)
{
if (!uploadedFile.IsValid)
{
return(string.Empty);
}
string fileName = Path.ChangeExtension(Path.GetRandomFileName(), ".png");
string fullFileName = "";
switch (ImageType)
{
case "Profile":
fullFileName = CombinePath(fileName, UploadDirectoryProfileImages);
break;
case "Company":
fullFileName = CombinePath(fileName, UploadDirectoryCompanyImages);
break;
}
using (System.Drawing.Image original = System.Drawing.Image.FromStream(uploadedFile.FileContent))
{
if (IsThumbnail)
{
using (System.Drawing.Image thumbnail = new ImageThumbnailCreator(original).CreateImageThumbnail(new Size(ThumbnailWidth, ThumbnailHeight)))
ImageUtils.SaveImage((Bitmap)thumbnail, fullFileName);
}
else
{
ImageUtils.SaveImage((Bitmap)original, fullFileName.Insert(fullFileName.IndexOf(".png"), "_original"));
System.Drawing.Image resizedPic = PictureHelper.ResizePicture(original, Width, Height);
ImageUtils.SaveImage((Bitmap)resizedPic, fullFileName);
}
}
ImageFullFileName = fullFileName;
ImageFileName = fileName;
ImageFullFileName = ImageFullFileName.Replace(AppDomain.CurrentDomain.BaseDirectory, "/").Replace("\\", "/");
return(ImageFullFileName);
}
public void TestForWidthLargerThanHeight()
{
Image oldImage = (Image)_resourceManager.GetObject("TestJpeg3");
Assert.IsNotNull(oldImage);
Assert.AreEqual(5, oldImage.Height);
Assert.AreEqual(10, oldImage.Width);
ImageThumbnailCreator creator = new ImageThumbnailCreator();
Image newSmallImage = creator.CreateThumbnail(oldImage, 2);
Assert.AreEqual(2, newSmallImage.Height);
Assert.AreEqual(4, newSmallImage.Width);
Image newLargeImage = creator.CreateThumbnail(oldImage, 20);
Assert.AreEqual(20, newLargeImage.Height);
Assert.AreEqual(40, newLargeImage.Width);
}
public void TestThumbnailCreation()
{
Image oldImage = (Image)_resourceManager.GetObject("TestPhoto");
Assert.IsNotNull(oldImage);
Assert.AreEqual(100, oldImage.Height);
Assert.AreEqual(100, oldImage.Width);
ImageThumbnailCreator creator = new ImageThumbnailCreator();
Image newSmallImage = creator.CreateThumbnail(oldImage, 50);
Assert.AreEqual(50, newSmallImage.Height);
Assert.AreEqual(50, newSmallImage.Width);
Image newLargeImage = creator.CreateThumbnail(oldImage, 200);
Assert.AreEqual(200, newLargeImage.Height);
Assert.AreEqual(200, newLargeImage.Width);
}
/// <summary>
/// 真实保存上传文件过程
/// </summary>
/// <param name="saveFile"></param>
/// <param name="owner"></param>
/// <returns></returns>
private async Task <IActionResult> SaveUpload(Action <string> saveFile, Account owner)
{
string fileState = "";
string fileExt = "";
string localPath = "";
string description = "";
Microsoft.Extensions.Primitives.StringValues headerVar;
Request.Headers.TryGetValue("fileState", out headerVar); if (headerVar.Count > 0)
{
fileState = headerVar[0].Trim();
}
Request.Headers.TryGetValue("fileExt", out headerVar); if (headerVar.Count > 0)
{
fileExt = headerVar[0].Trim();
}
Request.Headers.TryGetValue("localPath", out headerVar); if (headerVar.Count > 0)
{
localPath = headerVar[0].Trim();
}
Request.Headers.TryGetValue("description", out headerVar); if (headerVar.Count > 0)
{
description = headerVar[0].Trim();
}
//几个头信息decode
if (!string.IsNullOrWhiteSpace(fileState))
{
fileState = System.Web.HttpUtility.UrlDecode(fileState);
}
if (!string.IsNullOrWhiteSpace(fileExt))
{
fileExt = System.Web.HttpUtility.UrlDecode(fileExt);
}
if (!string.IsNullOrWhiteSpace(localPath))
{
localPath = System.Web.HttpUtility.UrlDecode(localPath);
}
if (!string.IsNullOrWhiteSpace(description))
{
description = System.Web.HttpUtility.UrlDecode(description);
}
//确保扩展名以 .开头，比如.jpg
if (fileExt.Length > 0 && fileExt[0] != '.')
{
fileExt = "." + fileExt;
}
FileAsset res = new FileAsset();
res.Id = GuidGen.NewGUID(); //先生成临时ID，用于保存文件
res.Name = localPath.Length > 0 ? Path.GetFileName(localPath) : res.Id;
res.Url = "/upload/" + res.Id;
int fstate = 0;
res.FileState = int.TryParse(fileState, out fstate) ? fstate : 0;
res.FileExt = fileExt;
res.LocalPath = localPath;
res.Description = description;
res.Creator = owner.Id;
res.Modifier = owner.Id;
res.OrganizationId = owner.OrganizationId;
//保存
string savePath = Path.Combine(uploadPath, res.Id);
try
{
saveFile(savePath);
}
catch
{
res.Id = "";
res.Url = "";
return(Ok(res));
}
FileInfo fi = new FileInfo(savePath);
res.Size = fi.Length;
res.Md5 = Md5.CalcFile(savePath); //计算md5
res.Id = res.Md5; //将ID和url改为md5
res.Url = "/upload/" + res.Id + res.FileExt;
string renamedPath = Path.Combine(uploadPath, res.Id + res.FileExt);
//图片文件生成缩略图
var createThumbnails = new Action(() =>
{
if (res.FileExt.Equals(".jpg", StringComparison.CurrentCultureIgnoreCase) || res.FileExt.Equals(".png", StringComparison.CurrentCultureIgnoreCase) ||
res.FileExt.Equals(".jpeg", StringComparison.CurrentCultureIgnoreCase) || res.FileExt.Equals(".gif", StringComparison.CurrentCultureIgnoreCase) ||
res.FileExt.Equals(".bmp", StringComparison.CurrentCultureIgnoreCase)
)
{
ImageThumbnailCreator.SaveImageThumbnails(renamedPath);
}
});
// 检查是否已经上传过此文件
var existRecord = await _Repository._DbContext.Set <FileAsset>().FindAsync(res.Id);
if (existRecord != null)
{
// 数据库记录还在，但是文件不在了，重新保存下文件。
if (System.IO.File.Exists(renamedPath) == false)
{
//重命名文件
System.IO.File.Move(savePath, renamedPath);
createThumbnails();
}
else
{
//删除冗余文件
System.IO.File.Delete(savePath);
}
return(Ok(existRecord));
}
else // 没有上传记录
{
//没上传记录，但是已经有这个文件了，先删除已有的文件，使用用户的文件覆盖
if (System.IO.File.Exists(renamedPath))
{
System.IO.File.Delete(renamedPath);
}
System.IO.File.Move(savePath, renamedPath); //重命名文件
createThumbnails();
}
await _Repository.CreateAsync(owner.Id, res); //记录到数据库
return(Ok(res));
}
public async Task <IActionResult> AddPost(Post post, List <IFormFile> files, bool sage, bool isWrittenByOp = false)
{
try
{
var ipHash = _md5.ComputeHash(HttpContext.Connection.RemoteIpAddress.GetAddressBytes())
.GetString();
var anon = new Anon(ipHash, IpCheck.UserIsBanned(_db, ipHash));
if (anon.IsBanned)
{
return(RedirectToAction("YouAreBanned", "Ban"));
}
post.Comment = PostFormatter.GetHtmlTrimmedString(post.Comment);
post.AnonIpHash = ipHash;
post.TimeInUnixSeconds = DateTimeOffset.Now.ToUnixTimeSeconds();
if (User.Identity.IsAuthenticated)
{
var admin = _db.Admin.First(a => a.Email == User.Identity.Name);
post.AnonName = admin.Login;
post.Admin = admin;
}
if (ModelState.IsValid)
{
DbAccess.AddPostToThread(_db, post, sage, isWrittenByOp);
if (files.Count > 0)
{
var fileDirectory = Path.Combine(_env.WebRootPath, "postImages");
var thumbNailDirectory = Path.Combine(_env.WebRootPath, "thumbnails");
foreach (var file in files)
{
if (file.Length > 0)
{
switch (Path.GetExtension(file.FileName))
{
case ".jpeg":
case ".jpg":
case ".png":
{
var imageThumbnailCreator =
new ImageThumbnailCreator(file, fileDirectory, thumbNailDirectory);
imageThumbnailCreator.CreateThumbnail();
DbAccess.AddFilesToPost(_db, post, imageThumbnailCreator.FileInfo);
break;
}
case ".gif":
{
var gifThumbnailCreator =
new GifThumbnailCreator(file, fileDirectory, thumbNailDirectory);
gifThumbnailCreator.CreateThumbnail();
DbAccess.AddFilesToPost(_db, post, gifThumbnailCreator.FileInfo);
break;
}
}
}
else
{
ModelState.AddModelError("FileLengthNotValid", "Файл пустой.");
}
}
}
await LogIntoFile(_logDirectory,
string.Concat("Added new post: ", post.PostId, "at thread: ", post.ThreadId),
LoggingInformationKind.Info);
}
else
{
return(StatusCode(500));
}
}
catch (InvalidOperationException)
{
return(NotFound());
}
catch (Exception e)
{
await LogIntoFile(_logDirectory, string.Concat(e.Message, "\n", e.StackTrace),
LoggingInformationKind.Error);
}
return(RedirectToAction("Thread", new { id = post.ThreadId }));
}
public async Task <IActionResult> AddThread(Post post, List <IFormFile> files)
{
try
{
var ipHash = _md5.ComputeHash(HttpContext.Connection.RemoteIpAddress.GetAddressBytes())
.GetString();
var anon = new Anon(ipHash, IpCheck.UserIsBanned(_db, ipHash));
if (anon.IsBanned)
{
return(RedirectToAction("YouAreBanned", "Ban"));
}
if (ModelState.IsValid)
{
var board = _db.Board.First(b => b.BoardId == post.BoardId);
if (_db.Thread.Count(t => t.BoardId == post.BoardId) >= 20)
{
return(RedirectToAction("Board", new { prefix = board.Prefix }));
}
post.AnonIpHash = ipHash;
if (!string.IsNullOrEmpty(post.AnonName))
{
post.AnonName = PostFormatter.GetHtmlTrimmedString(post.AnonName);
}
post.Comment = PostFormatter.GetHtmlTrimmedString(post.Comment);
post.IsWrittenByOp = true;
if (User.Identity.IsAuthenticated)
{
var admin = _db.Admin.First(a => a.Email == User.Identity.Name);
post.AnonName = admin.Login;
post.Admin = admin;
}
DbAccess.AddThreadToBoard(_db, ref post);
if (files.Count > 0)
{
var fileDirectory = Path.Combine(_env.WebRootPath, "postImages");
var thumbNailDirectory = Path.Combine(_env.WebRootPath, "thumbnails");
foreach (var file in files)
{
if (file.Length > 0)
{
switch (Path.GetExtension(file.FileName))
{
case ".jpeg":
case ".jpg":
case ".png":
{
var imageThumbnailCreator = new ImageThumbnailCreator(file, fileDirectory, thumbNailDirectory);
imageThumbnailCreator.CreateThumbnail();
DbAccess.AddFilesToPost(_db, post, imageThumbnailCreator.FileInfo);
break;
}
case ".gif":
{
var gifThumbnailCreator = new GifThumbnailCreator(file, fileDirectory, thumbNailDirectory);
gifThumbnailCreator.CreateThumbnail();
DbAccess.AddFilesToPost(_db, post, gifThumbnailCreator.FileInfo);
break;
}
}
}
else
{
ModelState.AddModelError("FileLengthNotValid", "Файл пустой.");
}
}
}
await LogIntoFile(_logDirectory, string.Concat("Added new thread: ", post.ThreadId),
LoggingInformationKind.Info);
return(RedirectToAction("Thread", "Thread", new { id = post.ThreadId }));
}
}
catch (Exception e)
{
await LogIntoFile(_logDirectory, string.Concat(e.Message, "\n", e.StackTrace),
LoggingInformationKind.Error);
Console.WriteLine(e);
return(StatusCode(500));
}
return(RedirectToAction("Board"));
}