public async Task <IActionResult> Patch([FromForm] UserPatchAvatarInputModel model)
{
var user = await UserManager.FindByEmailAsync(User.Identity.Name);
using (var stream = new MemoryStream())
{
await model.File.CopyToAsync(stream);
using (var imageStream = new MemoryStream())
{
// 将文件剪裁为180 * 180 px
const int px = 180;
stream.Seek(0, SeekOrigin.Begin);
using (var image = Image.Load(stream))
{
if (image.Width < image.Height)
{
var times = (decimal)image.Height / image.Width;
image.Mutate(x => x.Resize(px, (int)(px * times)));
}
else
{
var times = (decimal)image.Width / image.Height;
image.Mutate(x => x.Resize((int)(px * times), px));
}
image.Mutate(x => x.Crop(new Rectangle(0, 0, px, px)));
switch (model.File.ContentType.ToLower())
{
case "image/jpeg":
case "image/jpg":
image.Save(imageStream, new JpegEncoder());
break;
case "image/png":
image.Save(imageStream, new PngEncoder());
break;
default:
throw new ArgumentOutOfRangeException();
}
}
var id = await FileManager.CreateFileAsync(imageStream, model.File.ContentType, model.File.FileName);
var location = $"/api/images/{id}";
user.Avatar = location;
await UserManager.UpdateAsync(user);
}
return(NoContent());
}
}
public async Task <IActionResult> Patch([FromRoute] string id, [FromForm] UserPatchAvatarInputModel model)
{
var user = await _userManager.FindByEmailAsync(User.Identity.Name);
var image = await model.File.ResizeFile(180);
var fileId = await _fileManager.CreateFileAsync(image, model.File.ContentType, model.File.FileName);
await image.DisposeAsync();
user.AvatarId = fileId;
await _userManager.UpdateAsync(user);
return(Ok(new ApiResult <string>($"/api/files/{user.AvatarId}")));
}
