/// <summary> /// 保存远程文件到本地 /// </summary> /// <param name="fileUri">URI地址</param> /// <returns>上传后的路径</returns> public string RemoteSaveAs(string fileUri) { var client = new WebClient(); var fileExt = string.Empty; //文件扩展名,不含“.” if (fileUri.LastIndexOf(".", StringComparison.Ordinal) == -1) { fileExt = "gif"; } else { fileExt = Utils.GetFileExt(fileUri); } var newFileName = Utils.GetRamCode() + "." + fileExt; //随机生成新的文件名 var upLoadPath = GetUpLoadPath(); //上传目录相对路径 var fullUpLoadPath = Utils.GetMapPath(upLoadPath); //上传目录的物理路径 var newFilePath = upLoadPath + newFileName; //上传后的路径 //检查上传的物理路径是否存在,不存在则创建 if (!Directory.Exists(fullUpLoadPath)) { Directory.CreateDirectory(fullUpLoadPath); } try { client.DownloadFile(fileUri, fullUpLoadPath + newFileName); //如果是图片,检查是否需要打水印 if (IsWaterMark(fileExt)) { switch (_watermarktype) { case 1: WatermarkUtil.AddImageSignText(newFilePath, newFilePath, _watermarktext, _watermarkposition, _watermarkimgquality, _watermarkfont, _watermarkfontsize); break; case 2: WatermarkUtil.AddImageSignPic(newFilePath, newFilePath, _watermarkpic, _watermarkposition, _watermarkimgquality, _watermarktransparency); break; } } } catch { return(string.Empty); } client.Dispose(); return(newFilePath); }
/// <summary> /// 文件上传方法 /// </summary> /// <param name="postedFile">文件流</param> /// <param name="subFolder">子文件夹</param> /// <param name="isThumbnail">是否生成缩略图</param> /// <param name="isWater">是否打水印</param> /// <param name="thumbnailMode">缩略图模式(HW\W\H\Cut)</param> /// <returns>上传后文件信息</returns> public string FileSaveAs(HttpPostedFile postedFile, string subFolder, bool isThumbnail, bool isWater, string thumbnailMode = "Cut") { try { var fileExt = Utils.GetFileExt(postedFile.FileName); //文件扩展名,不含“.” var fileSize = postedFile.ContentLength; //获得文件大小,以字节为单位 var fileName = postedFile.FileName.Substring(postedFile.FileName.LastIndexOf(@"\", StringComparison.Ordinal) + 1); //取得原文件名 var newFileName = "original_" + Utils.GetRamCode() + "." + fileExt; //随机生成新的文件名 var newThumbnailFileName = newFileName.Replace("original_", "thumbnail_"); //随机生成缩略图文件名 var upLoadPath = GetUpLoadPath(subFolder); //上传目录相对路径 var fullUpLoadPath = Utils.GetMapPath(upLoadPath); //上传目录的物理路径 var newFilePath = upLoadPath + newFileName; //上传后的路径 var newThumbnailPath = upLoadPath + newThumbnailFileName; //上传后的缩略图路径 //检查文件扩展名是否合法 if (!CheckFileExt(fileExt)) { return("{\"status\": 0, \"msg\": \"不允许上传" + fileExt + "类型的文件!\"}"); } //检查文件大小是否合法 if (!CheckFileSize(fileExt, fileSize)) { return("{\"status\": 0, \"msg\": \"文件超过限制的大小!\"}"); } //检查上传的物理路径是否存在,不存在则创建 if (!Directory.Exists(fullUpLoadPath)) { Directory.CreateDirectory(fullUpLoadPath); } //保存文件 postedFile.SaveAs(fullUpLoadPath + newFileName); //如果是图片,检查图片是否超出最大尺寸,是则裁剪 if (IsImage(fileExt) && (_imgmaxheight > 0 || _imgmaxwidth > 0)) { ThumbnailUtil.MakeThumbnailImage(fullUpLoadPath + newFileName, fullUpLoadPath + newFileName, _imgmaxwidth, _imgmaxheight); } //如果是图片,检查是否需要生成缩略图,是则生成 //LogUtil.WriteLog(fileExt); //LogUtil.WriteLog(IsImage(fileExt).ToString()); //LogUtil.WriteLog(isThumbnail.ToString()); //LogUtil.WriteLog(_thumbnailwidth.ToString()); //LogUtil.WriteLog(_thumbnailheight.ToString()); if (IsImage(fileExt) && isThumbnail && _thumbnailwidth > 0 && _thumbnailheight > 0) { //LogUtil.WriteLog("MakeThumbnailImage"); ThumbnailUtil.MakeThumbnailImage(fullUpLoadPath + newFileName, fullUpLoadPath + newThumbnailFileName, _thumbnailwidth, _thumbnailheight, thumbnailMode); //生成固定尺寸96的图标小图片icon ThumbnailUtil.MakeThumbnailImage(fullUpLoadPath + newFileName, fullUpLoadPath + newThumbnailFileName.Replace("thumbnail_", "icon_"), 96, 96, thumbnailMode); //生成固定尺寸180的小图片 ThumbnailUtil.MakeThumbnailImage(fullUpLoadPath + newFileName, fullUpLoadPath + newThumbnailFileName.Replace("thumbnail_", "small_"), 200, 200, thumbnailMode); //生成固定尺寸300的小图片 ThumbnailUtil.MakeThumbnailImage(fullUpLoadPath + newFileName, fullUpLoadPath + newThumbnailFileName.Replace("thumbnail_", "middle_"), 350, 350, thumbnailMode); //生成固定尺寸700的大图片 ThumbnailUtil.MakeThumbnailImage(fullUpLoadPath + newFileName, fullUpLoadPath + newThumbnailFileName.Replace("thumbnail_", "large_"), 700, 700, thumbnailMode); } else { newThumbnailPath = newFilePath; //不生成缩略图则返回原图 } //如果是图片,检查是否需要打水印 if (IsWaterMark(fileExt) && isWater) { switch (_watermarktype) { case 1: WatermarkUtil.AddImageSignText(newFilePath, newFilePath, _watermarktext, _watermarkposition, _watermarkimgquality, _watermarkfont, _watermarkfontsize); break; case 2: WatermarkUtil.AddImageSignPic(newFilePath, newFilePath, _watermarkpic, _watermarkposition, _watermarkimgquality, _watermarktransparency); break; } } //处理完毕,返回JOSN格式的文件信息 return("{\"status\": 1, \"msg\": \"上传文件成功!\", \"name\": \"" + fileName + "\", \"path\": \"" + newFilePath + "\", \"thumb\": \"" + newThumbnailPath + "\", \"size\": " + fileSize + ", \"ext\": \"" + fileExt + "\"}"); } catch { return("{\"status\": 0, \"msg\": \"上传过程中发生意外错误!\", \"name\": \"" + "" + "\", \"path\": \"" + "" + "\", \"thumb\": \"" + "" + "\", \"size\": " + 0 + ", \"ext\": \"" + "" + "\"}"); } }