public async Task <IActionResult> EditBookAsync([FromForm] BookViewModel model)
{
var entity = model.ToEntity();
if (model.BookId == 0)
{
await _booksServices.CreatedBookAsync(entity);
if (model.UploadedPicture != null)
{
await _pictureService.AddPicture(entity.Id, model.UploadedPicture, true);
}
}
else
{
entity.Id = model.BookId;
if (model.UploadedPicture != null)
{
if (model.ImageIsMain)
{
await _pictureService.DeleteMainPicture(entity.Id);
}
await _pictureService.AddPicture(entity.Id, model.UploadedPicture, model.ImageIsMain);
}
await _booksServices.UpdateBook(entity);
}
return(Redirect("/"));
}
public HttpResponseMessage AddPicture(PictureDto picture)
{
try
{
_pictureService.AddPicture(picture);
return(Request.CreateResponse(HttpStatusCode.Created, "Successfully added a picture!"));
}
catch (Exception ex)
{
return(Request.CreateResponse(HttpStatusCode.InternalServerError, ex.Message));
}
}
//上传图片
public async Task <IActionResult> Picture([FromServices] IWebHostEnvironment env, [FromForm] IFormFile imgFile)
{
if (imgFile != null && imgFile.Length > 0 && imgFile.Length < 20971520)
{
var fileExt = Path.GetExtension(imgFile.FileName);
var filePath = Path.Combine(env.WebRootPath, Guid.NewGuid().ToString());
var picture = new EditPictureViewModel
{
Origin = $"{filePath}_Origin{fileExt}",
Big = $"{filePath}_Big{fileExt}",
Small = $"{filePath}_Small{fileExt}"
};
using (var stream = imgFile.OpenReadStream())
{
FormatImage.AutoToSmall(stream, picture.Big, 1080);
FormatImage.AutoToSmall(stream, picture.Small, 260);
}
await _pictureService.AddPicture(picture);
}
return(View());
}
//上传图片
public async Task <IActionResult> Picture([FromServices] IWebHostEnvironment env, [FromForm] IFormFile imgFile)
{
//图片最大<18M
if (imgFile != null && imgFile.Length > 0 && imgFile.Length < 18874368)
{
//图片扩展名
var fileExt = Path.GetExtension(imgFile.FileName);
var rootPath = env.WebRootPath;
//按年月归档图片
var now = DateTime.Now;
var timePath = Path.Combine(now.Year.ToString(), now.Month.ToString());
var filePath = Path.Combine("photo", timePath);
//创建图片目录
if (!Directory.Exists(Path.Combine(rootPath, filePath)))
{
Directory.CreateDirectory(Path.Combine(rootPath, filePath));
}
filePath = Path.Combine(filePath, Guid.NewGuid().ToString());
var picture = new EditPictureViewModel
{
//原图可能太大，暂时不保存
Origin = $"{filePath}_origin{fileExt}",
Big = $"{filePath}_big{fileExt}",
Small = $"{filePath}_small{fileExt}"
};
using (var stream = imgFile.OpenReadStream())
{
//为了不影响图片观感，建议图片质量值设置为80以上
await FormatImage.AutoToSmall(stream, Path.Combine(rootPath, picture.Big), 1920, 99);
await FormatImage.AutoToSmall(stream, Path.Combine(rootPath, picture.Small), 1080, 99);
}
await _pictureService.AddPicture(picture);
}
return(View());
}
public async Task <IActionResult> AddPictures(List <IFormFile> files, int id)
{
var authorId = this.userManager.GetUserId(User);
var product = await productService.GetProductByIdAsync(id);
if (!IsUserAuthorizedToEdit(product.OwnerId, authorId))
{
return(Forbid());
}
// Check whether pictures count >= picturesMaxCount
int picsCount = productService.GetProductPicturesCount(id);
if (picsCount >= PicturesPerProductMaxCount)
{
ViewBag.Error = string.Format("You cannot upload more than {0} images to this product!", PicturesPerProductMaxCount);
return(RedirectToAction(nameof(ProductController.AddPictures), "Product"));
}
var uploadDirectory = Path.Combine(hostingEnvironment.WebRootPath, "images\\Products");
foreach (var file in files)
{
// Validate file format
string extension = Path.GetExtension(file.FileName);
if (!IsExtensionValid(extension))
{
ViewBag.Error = "Invalid file format!";
return(RedirectToAction(string.Concat(nameof(ProductController.AddPictures), "/", product.Id), "Product"));
}
var fullPath = Path.Combine(uploadDirectory, GetUniqueFileName(file.FileName));
var uniqueFileName = fullPath
.Substring(fullPath.IndexOf(Path.GetFileNameWithoutExtension(file.FileName)));
var dbPath = $"/images/Products/{uniqueFileName}";
// Add the original picture to filesystem
using (var stream = new FileStream(fullPath, FileMode.Create))
{
file.CopyTo(stream);
}
// Resize the picture:
Image imgOriginal = Image.FromFile(fullPath);
Image resizedImg =
ResizePicture(imgOriginal, PictureMaxWidth, PictureMaxHeight);
imgOriginal.Dispose();
// Add the resized picture to filesystem
resizedImg.Save(fullPath);
// Add the current picture to database
pictureService.AddPicture(dbPath, id, authorId);
}
return(RedirectToAction(string.Concat(nameof(ProductController.Details), "/", product.Id), "Product"));
}
public async Task <Guid> Create(PictureModel pictureModel)
{
return(await _pictureService.AddPicture(pictureModel));
}
