//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());
}