/// <summary>
/// 返回临时文件存放位置
/// </summary>
/// <param name="fileExtension"></param>
/// <returns></returns>
public string GetFileTempUrl(string fileExtension)
{
string sDay = DateTime.Now.Day.ToString();
string dir = ConfigHelper.GetFullPath("UploadFilesSavePath");
dir = Path.Combine(dir, "temp");
string cDir = Path.Combine(dir, sDay);
if (!Directory.Exists(cDir))
{
Directory.CreateDirectory(cDir);
}
string[] childDirs = Directory.GetDirectories(dir);
foreach (string item in childDirs)
{
if (item != (cDir))
{
Directory.Delete(item, true);
}
}
string fileName = CustomsHelper.GetFormatDateTime() + fileExtension.ToLower();
string fileUrl = Path.Combine(dir, sDay, fileName);
return(fileUrl.Replace(HttpContext.Current.Server.MapPath("~"), "~/").Trim().Replace(@"\", @"/"));
}
/// <summary>
/// 上传文件，并返回存储文件的虚拟路径，该虚拟路径包含根操作符（代字号 [~]）
/// </summary>
/// <param name="file"></param>
/// <param name="dirName"></param>
/// <returns></returns>
public string Upload(HttpPostedFile file, string dirName)
{
if (file == null || file.ContentLength == 0)
{
throw new ArgumentException("没有获取到任何上传的文件", "file");
}
dirName = "" + dirName.Trim('/') + "/";
int size = file.ContentLength;
string fileExtension = Path.GetExtension(file.FileName).ToLower();
if (!IsFileValidated(file.InputStream, size))
{
throw new ArgumentException("上传文件不在规定的上传文件范围内");
}
uploadRoot = VirtualPathUtility.AppendTrailingSlash(uploadRoot);
string fileUrl = string.Empty;
string fName = CustomsHelper.GetFormatDateTime();
string saveVirtualPath = uploadRoot + dirName + fName.Substring(0, 8) + "/";
string fullPath = HttpContext.Current.Server.MapPath(saveVirtualPath);
if (!Directory.Exists(fullPath))
{
Directory.CreateDirectory(fullPath);
}
fullPath += fName + fileExtension;
file.SaveAs(fullPath);
fileUrl = saveVirtualPath + fName + fileExtension;
return(fileUrl);
}
/// <summary>
/// 创建商品缩略图
/// 返回值：主图（220*220）、大图（800*800）、中图（350*350）、小图（50*50）
/// </summary>
/// <param name="virtualPath">商品主图片的路径，该路径是带有“~”符号的路径</param>
/// <returns></returns>
public string[] GetProductThumbnailImages(string virtualPath)
{
if (string.IsNullOrEmpty(virtualPath))
{
return(null);
}
context = HttpContext.Current;
string siteRootPath = context.Server.MapPath("~");
string fullPath = context.Server.MapPath(virtualPath);
string dir = Path.GetDirectoryName(fullPath);
string fName = Path.GetFileNameWithoutExtension(fullPath);
string fExtension = Path.GetExtension(fullPath).ToLower();
string newDir = dir + "\\" + fName;
if (!Directory.Exists(newDir))
{
Directory.CreateDirectory(newDir);
}
ImagesHelper ih = new ImagesHelper();
//创建220*220 主图
string sImages = newDir + "\\" + CustomsHelper.GetFormatDateTime() + fExtension;
ih.CreateThumbnailImage(fullPath, sImages, 220, 220);
sImages = sImages.Replace(siteRootPath, "/").Trim().Replace(@"\", @"/");
//创建800*800 大图
string sLImages = newDir + "\\" + CustomsHelper.GetFormatDateTime() + fExtension;
ih.CreateThumbnailImage(fullPath, sLImages, 800, 800);
sLImages = sLImages.Replace(siteRootPath, "/").Trim().Replace(@"\", @"/");
//创建350*350 中图
string sMimages = newDir + "\\" + CustomsHelper.GetFormatDateTime() + fExtension;
ih.CreateThumbnailImage(fullPath, sMimages, 350, 350);
sMimages = sMimages.Replace(siteRootPath, "/").Trim().Replace(@"\", @"/");
//创建50*50 小图
string sSimages = newDir + "\\" + CustomsHelper.GetFormatDateTime() + fExtension;
ih.CreateThumbnailImage(fullPath, sSimages, 50, 50);
sSimages = sSimages.Replace(siteRootPath, "/").Trim().Replace(@"\", @"/");
string[] images = { sImages, sLImages, sMimages, sSimages };
return(images);
}
/// <summary>
/// 上传文件到临时存储，并返回存储文件的虚拟路径，该虚拟路径包含根操作符（代字号 [~]）
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
public string UploadToTemp(HttpPostedFile file)
{
if (file == null || file.ContentLength == 0)
{
throw new ArgumentException("没有获取到任何上传的文件", "file");
}
int size = file.ContentLength;
string fileExtension = Path.GetExtension(file.FileName).ToLower();
if (!IsFileValidated(file.InputStream, size))
{
throw new ArgumentException("上传文件不在规定的上传文件范围内");
}
uploadRoot = VirtualPathUtility.AppendTrailingSlash(uploadRoot);
string dirName = "Temp/";
string[] childDirs = Directory.GetDirectories(HttpContext.Current.Server.MapPath(uploadRoot + dirName));
foreach (string item in childDirs)
{
DirectoryInfo di = new DirectoryInfo(item);
TimeSpan ts = DateTime.Now - di.CreationTime;
if (ts.Days > 2)
{
Directory.Delete(item, true);
}
}
string fName = CustomsHelper.GetFormatDateTime();
string fileUrl = string.Empty;
string saveVirtualPath = uploadRoot + dirName + fName.Substring(0, 8) + "";
string fullPath = HttpContext.Current.Server.MapPath(saveVirtualPath);
if (!Directory.Exists(fullPath))
{
Directory.CreateDirectory(fullPath);
}
fullPath += "/" + fName + fileExtension;
file.SaveAs(fullPath);
fileUrl = saveVirtualPath + "/" + fName + fileExtension;
return(fileUrl);
}