/// <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) { WebClient client = new WebClient(); string fileExt = fileUri.LastIndexOf(".", StringComparison.Ordinal) == -1 ? "gif" : Utils.GetFileExt(fileUri); string newFileName = Utils.GetGuidString() + "." + fileExt; //随机生成新的文件名 string upLoadPath = GetUpLoadPath(); //上传目录相对路径 string fullUpLoadPath = Utils.GetMapPath(upLoadPath); //上传目录的物理路径 string 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: WaterMark.AddImageSignText(newFilePath, newFilePath, _config["watermarktext"], watermarkposition, watermarkimgquality, _config["watermarkfont"], watermarkfontsize); break; case 2: WaterMark.AddImageSignPic(newFilePath, newFilePath, _config["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="isThumbnail">是否生成缩略图</param> /// <param name="isWater">是否打水印</param> /// <returns>上传后文件信息</returns> public string FileSaveAs(HttpPostedFile postedFile, bool isThumbnail, bool isWater) { try { string fileExt = Utils.GetFileExt(postedFile.FileName); //文件扩展名,不含“.” int fileSize = postedFile.ContentLength; //获得文件大小,以字节为单位 string fileName = postedFile.FileName.Substring(postedFile.FileName.LastIndexOf(@"\", StringComparison.Ordinal) + 1); //取得原文件名 string newFileName = Utils.GetGuidString() + "." + fileExt; //随机生成新的文件名 string newThumbnailFileName = "thumb_" + newFileName; //随机生成缩略图文件名 string upLoadPath = GetUpLoadPath(); //上传目录相对路径 string fullUpLoadPath = Utils.GetMapPath(upLoadPath); //上传目录的物理路径 string newFilePath = upLoadPath + newFileName; //上传后的路径 string 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)) { Thumbnail.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 if (IsImage(fileExt) && isThumbnail && thumbnailwidth > 0 && thumbnailheight > 0) { Thumbnail.MakeThumbnailImage(fullUpLoadPath + newFileName, fullUpLoadPath + newThumbnailFileName, thumbnailwidth, thumbnailheight, "Cut"); } 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: WaterMark.AddImageSignText(newFilePath, newFilePath, _config["watermarktext"], watermarkposition, watermarkimgquality, _config["watermarkfont"], watermarkfontsize); break; case 2: WaterMark.AddImageSignPic(newFilePath, newFilePath, _config["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!\"}"); } }