/// <summary>取得图片文件的宽高</summary> /// <param name="srcFile"></param> /// <param name="ww">取得图片的宽度</param> /// <param name="hh">取得图片的高度</param> /// <returns></returns> public static bool Get_Pic_WW_HH(string srcFile, out int ww, out int hh) { string sExt = DirFileHelper.GetFileExtension(srcFile).ToLower(); if (sExt == "gif" || sExt == "jpg" || sExt == "jpeg" || sExt == "bmp" || sExt == "png") { if (srcFile.IndexOf(":") < 0) { srcFile = DirFileHelper.GetMapPath(srcFile); } if (DirFileHelper.IsExistFile(srcFile)) { try { Image testImage = Image.FromFile(srcFile); ww = testImage.Width; hh = testImage.Height; testImage.Dispose(); return(true); } catch (Exception ex) { throw ex; } } } ww = 0; hh = 0; return(false); }
/// <summary>追加文件(文本),如果该文件不存在就创建</summary> /// <param name="filebody">文件内容</param> /// <param name="filename">文件名(包括完整路径)</param> /// <returns></returns> public static bool AppendFile(string filebody, string filename) { if (string.IsNullOrEmpty(filename)) { return(false); } try { if (filename.IndexOf(":") < 0) { filename = DirFileHelper.GetMapPath(filename); } var fs = new FileStream(filename, FileMode.Append); var sw = new StreamWriter(fs); sw.Write(filebody); sw.Flush(); sw.Close(); fs.Close(); } catch { return(false); } return(File.Exists(filename)); }
/// <summary> /// 创建XML的根节点 /// </summary> private void CreateXMLElement() { //创建一个XML对象 _xml = new XmlDocument(); if (DirFileHelper.IsExistFile(_filePath)) { //加载XML文件 _xml.Load(this._filePath); } //为XML的根节点赋值 _element = _xml.DocumentElement; }
/// <summary>向页面输出js提示</summary> /// <param name="errorNumber"></param> /// <param name="customMsg"></param> private void SendResponse(int errorNumber, string customMsg) { _errMsg = customMsg; switch (errorNumber) { case 101: return; case 201: _errMsg = "请选择要上传的文件!"; return; case 202: _errMsg = "不支持该文件格式,只支持以下格式:(" + this.AllowedExt + ")."; return; case 203: _errMsg = "系统禁止上传格式:(" + this.DeniedExt + ")."; return; case 204: _errMsg = "权限出错. 您可能没有权限上传文件. 请检查服务器."; return; case 301: _errMsg = "上传文件大小超过了限制.最多上传(" + DirFileHelper.FmtFileSize2(_maxSize) + ")."; return; case 500: _errMsg = "系统暂时禁止上传文件."; return; case 501: _errMsg = "非法提交!!"; return; case 502: _errMsg = "参数错误!!key"; return; case 503: _errMsg = "参数错误!!subid"; return; default: _errMsg = "不知名的错误!."; return; } }
/// <summary> /// 将内容写入日志里 /// </summary> /// <param name="fileName">文件名</param> /// <param name="content">要写入日志文件的内容</param> public static void WriteLog(string fileName, string content) { try { if (string.IsNullOrEmpty(content)) { return; } string path = "/Data/log/" + fileName + "/" + GetYearMonth(DateTime.Now) + "/"; DirFileHelper.CreateDir(path); AppendFile(DateTime.Now.ToLongTimeString() + content + "\r\n\r\n\r\n", path + DateTime.Now.Day + ".txt"); } catch { } }
/// <summary>在图片上生成图片水印</summary> /// <param name="srcFile">要添加水印的图片</param> /// <param name="top">上边距 为0时下边距生效</param> /// <param name="bottom">下边距 上边距为0时生效</param> /// <param name="left">左边距 为0时右边距生效</param> /// <param name="right">右边距 左边距为0时生效</param> /// <param name="limitWidth">原图小于该宽度,将不添加水印</param> /// <param name="HighQuality">如果大于0,使用质量控制(50-100)</param> /// <param name="_WaterPicPath">水印图片所在地址,默认:"/images/Water.png"</param> public static void MakeWaterPic(string srcFile, int top = 0, int bottom = 10, int left = 0, int right = 10, int limitWidth = 300, int HighQuality = 0, string _WaterPicPath = "/images/Water.png") { #region 取得图片绝对地址 if (srcFile.IndexOf(":") < 0) { srcFile = DirFileHelper.GetMapPath(srcFile); } if (!DirFileHelper.IsExistFile(srcFile)) { return; } #endregion #region 取得水印图片 if (_WaterPicPath.IndexOf(":") < 0) { _WaterPicPath = DirFileHelper.GetMapPath(_WaterPicPath); } if (!DirFileHelper.IsExistFile(_WaterPicPath)) { return; } #endregion //--------------------------------------- #region 判断 Image srcImage = Image.FromFile(srcFile); Image watImage = Image.FromFile(_WaterPicPath); //水印图大于原图或原图小于300,不加水印 if (watImage.Width > srcImage.Width || srcImage.Width < limitWidth) { srcImage.Dispose(); watImage.Dispose(); return; } #endregion //--------------------------------------- #region 位置 int x = 0, y = 0; if (top != 0) { y = top; if (left != 0) { x = left; } else { x = srcImage.Width - watImage.Width - right; } } else if (bottom != 0) { y = srcImage.Height - watImage.Height - bottom; if (left != 0) { x = left; } else { x = srcImage.Width - watImage.Width - right; } } else { //居中 x = srcImage.Width / 2 - watImage.Width / 2; y = srcImage.Height / 2 - watImage.Height / 2; } #endregion //--------------------------------------- #region 保存 Bitmap bitmap = new Bitmap(srcImage); Graphics g = Graphics.FromImage(bitmap); g.DrawImage(watImage, new Rectangle(x, y, watImage.Width, watImage.Height), 0, 0, watImage.Width, watImage.Height, GraphicsUnit.Pixel); srcImage.Dispose(); watImage.Dispose(); g.Dispose(); try { if (DirFileHelper.GetFileExtension(srcFile) == "png") { bitmap.Save(srcFile, System.Drawing.Imaging.ImageFormat.Png); } else//以jpg格式保存缩略图 { //--------------------------------------- //高质量--使用分级图片质量 if (HighQuality > 0) { // 以下代码为保存图片时,设置压缩质量 EncoderParameters encoderParams = new EncoderParameters(); long[] quality = new long[1]; quality[0] = HighQuality; //50-100内 EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality); encoderParams.Param[0] = encoderParam; //获得包含有关内置图像编码解码器的信息的ImageCodecInfo 对象. ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders(); ImageCodecInfo jpegICI = null; for (int i = 0; i < arrayICI.Length; i++) { if (arrayICI[i].FormatDescription.Equals("JPEG")) { jpegICI = arrayICI[i];//设置JPEG编码 break; } } //--------------------------------------- bitmap.Save(srcFile, jpegICI, encoderParams); } else { bitmap.Save(srcFile, System.Drawing.Imaging.ImageFormat.Jpeg); } } } catch (Exception e) { throw e; } finally { bitmap.Dispose(); } #endregion }
/// <summary>生成缩略图</summary> /// <param name="srcFile">原图片路径(服务器路径d:\web\upload\100.jpg)</param> /// <param name="decFile">缩略图路径(服务器路径d:\web\upload\100.jpg)</param> /// <param name="iMaxWidth">限制的宽度</param> /// <param name="iMaxHeight">限制的高度</param> /// <param name="highQuality">如果大于0,使用质量控制(50-100)</param> /// <param name="CutType">0=按比例生成宽高,1=固定图片宽高,2=固定背景宽高,图片按比例生成</param> public static void MakeThumbImage(string srcFile, string decFile, int iMaxWidth, int iMaxHeight, int highQuality = 0, int CutType = 0) { #region 取得路径 if (srcFile.IndexOf(":") < 0) { srcFile = DirFileHelper.GetMapPath(srcFile); } if (decFile.IndexOf(":") < 0) { decFile = DirFileHelper.GetMapPath(decFile); } if (!DirFileHelper.IsExistFile(srcFile)) { return; } #endregion //--------------------------------------- #region 原始图片宽高 Image srcImage = Image.FromFile(srcFile); int iSrcWidth = srcImage.Width; int iSrcHeight = srcImage.Height; #endregion //--------------------------------------- #region 读取新图片宽高 int toWidth = 0, toHeight = 0, x = 0, y = 0; if (CutType == 1)//固定宽高 { toWidth = iMaxWidth; toHeight = iMaxHeight; } else { //如果原始图,高度大于宽度,按高度缩放,如果宽度大高度按宽度缩放(不变形) //如果图片缩放后,还是比限制大,再进行缩放,直接宽同度都不超过限制 if ((iSrcWidth < iMaxWidth) && (iSrcHeight < iMaxHeight)) { toWidth = iSrcWidth; toHeight = iSrcHeight; } else { if (iSrcHeight > iSrcWidth) { toHeight = iMaxHeight; toWidth = iSrcWidth * iMaxHeight / iSrcHeight; if (toWidth > iMaxWidth) { //toHeight 必须在 toWidth 前 toHeight = toHeight * iMaxWidth / toWidth; toWidth = iMaxWidth; } } else { toHeight = iSrcHeight * iMaxWidth / iSrcWidth; toWidth = iMaxWidth; if (toHeight > iMaxHeight) { //toWidth 必须在 toHeight 前 toWidth = toWidth * iMaxHeight / toHeight; toHeight = iMaxHeight; } } } } #endregion #region 输出 Bitmap bitmap; if (CutType == 2) { //2=固定背景宽高,图片按比例生成 bitmap = new Bitmap(iMaxWidth, iMaxHeight); if (toWidth <= iMaxWidth && toHeight <= iMaxHeight) { x = Convert.ToInt16((iMaxWidth - toWidth) / 2); y = Convert.ToInt16((iMaxHeight - toHeight) / 2); } else { if (toWidth < toHeight) { x = Convert.ToInt16((iMaxWidth - toWidth) / 2); } else { y = Convert.ToInt16((iMaxHeight - toHeight) / 2); } } } else { bitmap = new Bitmap(toWidth, toHeight); } Graphics g = Graphics.FromImage(bitmap); //高质量 //g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality; //设置高质量插值法 g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic; //设置高质量,低速度呈现平滑程度 g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; //清空画布并以透明背景色填充 //g.Clear(System.Drawing.Color.Transparent); g.Clear(System.Drawing.Color.White); //在指定位置并且按指定大小绘制原图片的指定部分 g.DrawImage(srcImage, new Rectangle(x, y, toWidth, toHeight), new Rectangle(0, 0, iSrcWidth, iSrcHeight), GraphicsUnit.Pixel); srcImage.Dispose(); g.Dispose(); try { if (DirFileHelper.GetFileExtension(srcFile) == "png") { bitmap.Save(decFile, System.Drawing.Imaging.ImageFormat.Png); } else//以jpg格式保存缩略图 { //--------------------------------------- //高质量--使用分级图片质量 if (highQuality > 0) { // 以下代码为保存图片时,设置压缩质量 var encoderParams = new EncoderParameters(); var quality = new long[1]; quality[0] = highQuality; //50-100内 var encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality); encoderParams.Param[0] = encoderParam; //获得包含有关内置图像编码解码器的信息的ImageCodecInfo 对象. ImageCodecInfo[] arrayIci = ImageCodecInfo.GetImageEncoders(); ImageCodecInfo jpegIci = null; for (int i = 0; i < arrayIci.Length; i++) { if (arrayIci[i].FormatDescription.Equals("JPEG")) { jpegIci = arrayIci[i]; //设置JPEG编码 break; } } //--------------------------------------- bitmap.Save(decFile, jpegIci, encoderParams); } else { bitmap.Save(decFile, System.Drawing.Imaging.ImageFormat.Jpeg); } } } catch (Exception e) { throw e; } finally { bitmap.Dispose(); } #endregion }
/// <summary>上传文件,并按设置生成缩略图,水印</summary> /// <returns></returns> public bool UploadFile(HttpPostedFile oFile = null) { #region 检查设置 if (!this.IsEnabled) { SendResponse(500, ""); return(false); } if (this.IsChkSrcPost) { if (!RequestHelper.ChkSrcPost()) { SendResponse(501, ""); return(false); } } if (this._savePath.Length < 1) { SendResponse(101, "SavePath未设置"); return(false); } if (oFile == null) { if (this.FilePostName.Length < 1) { SendResponse(101, "filePostName未设置"); return(false); } } this._savePath = DirFileHelper.FixDirPath(_savePath) + DateTime.Now.ToString("yyMM") + "/"; bool isOk = DirFileHelper.CheckSaveDir(this._savePath); if (!isOk) { SendResponse(101, "SavePath设置不当:" + this._savePath + ", 或权限不足!"); return(false); } #endregion //------------------------------------------------ #region 获取文件对象 //获取文件对象 if (oFile == null) { oFile = HttpContext.Current.Request.Files[FilePostName]; } if (oFile == null) { SendResponse(201, ""); return(false); } //------------------------------------------------ //原始文件名; this.SrcName = Path.GetFileName(oFile.FileName); #endregion //------------------------------------------------ #region 检查文件大小 this._fileSize = oFile.ContentLength; //不能上传小于10字节的内容 if (this.SrcName.Length < 3 || this._fileSize < 10) { SendResponse(201, ""); return(false); } //检测文件大小是否超过限制 if (this._fileSize > (this._maxSize * 1024)) { SendResponse(301, ""); return(false); } #endregion //------------------------------------------------ #region 检查文件类型 this.FileExt = Path.GetExtension(this.SrcName).ToLower().TrimStart('.'); if (!checkAllowedExt(this.FileExt)) { SendResponse(202, ""); return(false); } #endregion #region 文件 //上传 string sServerDir = _savePath; if (sServerDir.IndexOf(":") < 0) { sServerDir = DirFileHelper.FixDirPath(DirFileHelper.GetMapPath(sServerDir)); } string sNewFile = ""; //新文件名(系统生成) string sNewRoot = ""; //新文件路径(绝对路径) while (true) { sNewFile = FileOperateHelper.GetRndFileName("." + this.FileExt); sNewRoot = System.IO.Path.Combine(sServerDir, sNewFile); if (!DirFileHelper.IsExistFile(sNewRoot)) { try { oFile.SaveAs(sNewRoot); } catch { SendResponse(204, ""); return(false); } break; } } this.NewFile = sNewFile; this.NewPath = _savePath + sNewFile; #endregion //------------------------------------------------ #region 生成缩略图 + 水印 if (this.FileExt == "jpg" || this.FileExt == "png" || this.FileExt == "gif" || this.FileExt == "jpeg" || this.FileExt == "bmp") { #region 取得原始尺寸 try//能取得图片宽高,是真实的图片 { Image testImage1 = Image.FromFile(sNewRoot); this.SrcWidth = testImage1.Width; this.SrcHeight = testImage1.Height; testImage1.Dispose(); this.NewWidth = this.SrcWidth; this.NewHeight = this.SrcHeight; } catch { //非法格式,不是真正的图片 DirFileHelper.DeleteFile(sNewRoot); SendResponse(202, ""); return(false); } //------------------------------------------------ //先备份原始图 var tmpPath = ""; tmpPath = System.IO.Path.Combine(sServerDir, DirFileHelper.GetFileNamePostfix(sNewFile, "o")); DirFileHelper.CopyFile(sNewRoot, tmpPath); #endregion if (this._isFixPic || this._isBigPic || this._isMidPic || this._isMinPic) { #region 创建大图 if (this._isBigPic) { tmpPath = System.IO.Path.Combine(sServerDir, DirFileHelper.GetFileNamePostfix(sNewFile, "b")); if (this._bigWidth > 0 && this._bigHeight > 0) { //缩略 MakeThumbImage(sNewRoot, tmpPath, this._bigWidth, this._bigHeight, this._bigQuality, this.CutType); } else//因为不限制宽高,所以直接复制出来就行了 { DirFileHelper.CopyFile(sNewRoot, tmpPath); } //添加水印 if (this.IsWaterPic) { MakeWaterPic(tmpPath); } } #endregion //------------------------------------------------ #region 创建中图 if (this._isMidPic) { tmpPath = System.IO.Path.Combine(sServerDir, DirFileHelper.GetFileNamePostfix(sNewFile, "m")); if (this._midWidth > 0 && this._midHeight > 0) { //缩略图 MakeThumbImage(sNewRoot, tmpPath, this._midWidth, this._midHeight, this._midQuality, this.CutType); } else//因为不限制宽高,所以直接复制出来就行了 { DirFileHelper.CopyFile(sNewRoot, tmpPath); } //添加水印 if (this.IsWaterPic) { MakeWaterPic(tmpPath); } } #endregion //------------------------------------------------ #region 创建小图 if (this._isMinPic) { tmpPath = System.IO.Path.Combine(sServerDir, DirFileHelper.GetFileNamePostfix(sNewFile, "s")); if (this._minWidth > 0 && this._minHeight > 0) { //缩略图 MakeThumbImage(sNewRoot, tmpPath, this._minWidth, this._minHeight, this._minQuality, this.CutType); } else//因为不限制宽高,所以直接复制出来就行了 { DirFileHelper.CopyFile(sNewRoot, tmpPath); } //微型图不用加水印 } #endregion //------------------------------------------------ #region 创建推荐图 if (this._isHotPic) { tmpPath = System.IO.Path.Combine(sServerDir, DirFileHelper.GetFileNamePostfix(sNewFile, "h")); if (this._hotWidth > 0 && this._hotHeight > 0) { //缩略图 MakeThumbImage(sNewRoot, tmpPath, this._hotWidth, this._hotHeight, this._hotQuality, this.CutType); } else//因为不限制宽高,所以直接复制出来就行了 { DirFileHelper.CopyFile(sNewRoot, tmpPath); } //添加水印 if (this.IsWaterPic) { MakeWaterPic(tmpPath); } } #endregion //------------------------------------------------ #region 限制列表图 if (this._isFixPic && this._picWidth > 0 && this._picHeight > 0) { MakeThumbImage(sNewRoot, sNewRoot, this._picWidth, this._picHeight, this._picQuality, this.CutType); } #endregion #region 取得缩放后的图片宽高 try { Image testImage2 = Image.FromFile(sNewRoot); this.NewWidth = testImage2.Width; this.NewHeight = testImage2.Height; testImage2.Dispose(); } catch { DirFileHelper.DelPicFile(this.NewPath); SendResponse(202, ""); return(false); } #endregion } //列表图是否加水印 if (DirFileHelper.IsExistFile(sNewRoot) && this.IsWaterPic) { MakeWaterPic(sNewRoot); } } #endregion //上传成功!! return(true); }