/// <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>
/// 指定存储目录key，是否生成缩略图，上传文件
/// 返回所有文件路径，如果是生成缩略图，则包含缩略图文件路径
/// </summary>
/// <param name="file"></param>
/// <param name="key"></param>
/// <param name="isCreateThumbnail"></param>
/// <returns></returns>
public string[] Upload(HttpPostedFile file, string key, bool isCreateThumbnail)
{
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, fileExtension))
{
throw new ArgumentException("上传文件不在规定的上传文件范围内");
}
if (isCreateThumbnail)
{
if ((fileExtension != ".jpg") || (fileExtension != ".jpg"))
{
throw new ArgumentException("创建缩略图只支持.jpg格式的文件，请检查");
}
}
string dir = ConfigHelper.GetValueByKey(key);
if (string.IsNullOrWhiteSpace(dir))
{
throw new ArgumentException("未找到" + key + "的相关配置，请检查", "key");
}
string paths = "";
dir = VirtualPathUtility.AppendTrailingSlash(dir);
string rndName = FilesHelper.GetFormatDateTime();
string fName = rndName + fileExtension;
string filePath = dir + rndName.Substring(0, 8) + "/";
string fullPath = HttpContext.Current.Server.MapPath(filePath);
if (!Directory.Exists(fullPath))
{
Directory.CreateDirectory(fullPath);
}
file.SaveAs(fullPath + fName);
paths += filePath + fName;
if (isCreateThumbnail)
{
ImagesHelper ih = new ImagesHelper();
string[] whBPicture = ConfigHelper.GetValueByKey("BPicture").Split(',');
string[] whMPicture = ConfigHelper.GetValueByKey("MPicture").Split(',');
string[] whSPicture = ConfigHelper.GetValueByKey("SPicture").Split(',');
string bPicturePath = filePath + rndName + "_b" + fileExtension;
string mPicturePath = filePath + rndName + "_m" + fileExtension;
string sPicturePath = filePath + rndName + "_s" + fileExtension;
ih.CreateThumbnailImage(fullPath + fName, HttpContext.Current.Server.MapPath(bPicturePath), int.Parse(whBPicture[0]), int.Parse(whBPicture[1]));
ih.CreateThumbnailImage(fullPath + fName, HttpContext.Current.Server.MapPath(mPicturePath), int.Parse(whMPicture[0]), int.Parse(whMPicture[1]));
ih.CreateThumbnailImage(fullPath + fName, HttpContext.Current.Server.MapPath(sPicturePath), int.Parse(whSPicture[0]), int.Parse(whSPicture[1]));
paths += "," + bPicturePath;
paths += "," + mPicturePath;
paths += "," + sPicturePath;
}
else
{
paths += "," + filePath + fName;
paths += "," + filePath + fName;
paths += "," + filePath + fName;
}
return(paths.Split(','));
}
