C#目录和文件操作

using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.IO;using System.Text;using System.Drawing;using System.Drawing.Drawing2D;using System.Drawing.Imaging; /// <summary> /// 文件操作类 /// </summary> public static class FileCom { //普通文件或图片上传 #region 文件名命名 和 文件类别验证 /// <summary> /// 产生随即文件名 /// </summary> /// <returns></returns> public static int GetRandomFileName() { byte[] bytes = new byte[10]; System.Security.Cryptography.RNGCryptoServiceProvider rng = new System.Security.Cryptography.RNGCryptoServiceProvider(); rng.GetBytes(bytes); return BitConverter.ToInt32(bytes, 0); } /// <summary> /// 产生随机文件名 /// </summary> /// <param name="length">随机文件名长度</param> /// <returns>产生随机文件名</returns> private static string GetRandomFileName(int length) { string ch = "abcdefghijklmnopqrstuvwxyz0123456789"; string strRandomFileName = string.Empty; int intLength = ch.Length; Random rd = new Random(); for (int i = 0; i < length; i++) { strRandomFileName += ch[rd.Next(intLength)]; } return strRandomFileName; } /// <summary> /// 产生唯一文件名 /// </summary> /// <param name="strPath">文件夹路径</param> /// <param name="strExt">扩展名</param> /// <returns>文件名</returns> public static string GetOnlyFileName(string strPath, string strExt) { // 若文件夹不存在, 创建文件夹 if (!System.IO.Directory.Exists(HttpContext.Current.Server.MapPath(strPath))) { System.IO.Directory.CreateDirectory(HttpContext.Current.Server.MapPath(strPath)); } string strTempFileName = string.Empty; string strTempFullName = string.Empty; // 循环方式取唯一文件名 while (true) { strTempFileName = GetRandomFileName(15); strTempFullName = strPath + strTempFileName + "." + strExt; if (!System.IO.File.Exists(strTempFullName)) { break; } } return strTempFileName + "." + strExt; } /// <summary> /// 文件名是否图片文件 /// </summary> /// <param name="filename">文件名</param> /// <returns>是否图片文件</returns> public static bool IsImageExt(string filename) { if (filename == null || filename == string.Empty) return false; //string[] extArray = { ".gif", ".jpg", ".jpeg", ".bmp", ".png" }; //string[] extArray = {".jpg", ".jpeg"}; string[] extArray = { ".gif", ".jpg", ".jpeg", ".png" }; foreach (string ext in extArray) { if (filename.ToLower().EndsWith(ext)) return true; } return false; } /// <summary> /// 文件名是否图片文件或flash文件 /// </summary> /// <param name="filename">文件名</param> /// <returns>是否图片文件</returns> public static bool IsImageOrFlashExt(string filename) { if (filename == null || filename == string.Empty) return false; string[] extArray = { ".gif", ".jpg", ".jpeg", ".bmp", ".png", ".swf" }; foreach (string ext in extArray) { if (filename.ToLower().EndsWith(ext)) return true; } return false; } #endregion #region 文件夹或文件创建 删除操作/图片 文件上传类 /// <summary> /// .net自带IO方法创建文件夹(注意权限问题) /// </summary> /// <param name="folderpath">建立文件夹相对路径</param> /// <returns>true:建立成功 false:此文件夹名已存在</returns> public static void IOCreateFolder(string folderpath) { if (!System.IO.Directory.Exists(HttpContext.Current.Server.MapPath(folderpath))) { System.IO.Directory.CreateDirectory(HttpContext.Current.Server.MapPath(folderpath)); } } /// <summary> /// 删除一个文件夹下所有文件和文件夹 /// </summary> /// <param name="folderpath"></param> public static void DelFolderandFiles(string folderpath) { if (System.IO.Directory.Exists(HttpContext.Current.Server.MapPath(folderpath))) { System.IO.DirectoryInfo spath = new System.IO.DirectoryInfo(HttpContext.Current.Server.MapPath(folderpath)); foreach (System.IO.DirectoryInfo folder in spath.GetDirectories()) { folder.Delete(); } foreach (System.IO.FileInfo file in spath.GetFiles()) { file.Delete(); } } } /// <summary> /// 单个文件夹删除类 /// </summary> /// <param name="folderpath"></param> public static void DelFolder(string folderpath) { if (System.IO.Directory.Exists(HttpContext.Current.Server.MapPath(folderpath))) { System.IO.Directory.Delete(HttpContext.Current.Server.MapPath(folderpath)); } } /// <summary> /// 单个文件删除类 /// </summary> /// <param name="filePath">文件相对路径</param> public static void DelFile(string filePath) { if (System.IO.File.Exists(HttpContext.Current.Server.MapPath(filePath))) { System.IO.File.Delete(HttpContext.Current.Server.MapPath(filePath)); } } /// <summary> /// 普通图片上传类 /// </summary> /// <param name="fileName">图片文件名(可返回)</param> /// <param name="file">上传控件名</param> /// <param name="oldpic">原始图片地址</param> /// <param name="filePath">图片存放路径</param> /// <param name="size">图片限制大小的值</param> /// <returns>true:文件上传成功!false:图片类型错误或大小超过限制大小值</returns> public static bool UpLoadImg(ref string fileName, System.Web.UI.WebControls.FileUpload file, string oldpic, string filePath, int size) { fileName = file.PostedFile.FileName; fileName = System.DateTime.Now.ToString("yyMMddhhmmss") + fileName.Substring(fileName.LastIndexOf(".")); string type = fileName.Substring(fileName.LastIndexOf(".") + 1); if (IsImageExt(fileName) && file.PostedFile.ContentLength < size && file.PostedFile.ContentLength > 0) { DelFile(filePath + "//" + oldpic); file.PostedFile.SaveAs(HttpContext.Current.Server.MapPath(filePath + "//" + fileName)); return true; } else { return false; } } /// <summary> /// 普通图片和Flash上传类 /// </summary> /// <param name="fileName">图片文件名(可返回)</param> /// <param name="file">上传控件名</param> /// <param name="oldpic">原始图片地址</param> /// <param name="filePath">图片存放路径</param> /// <param name="size">图片限制大小的值</param> /// <returns>true:文件上传成功!false:图片类型错误或大小超过限制大小值</returns> public static bool UpLoadImgAndFlash(ref string fileName, System.Web.UI.WebControls.FileUpload file, string oldpic, string filePath, int size) { fileName = file.PostedFile.FileName; fileName = System.DateTime.Now.ToString("yyMMddhhmmss") + fileName.Substring(fileName.LastIndexOf(".")); string type = fileName.Substring(fileName.LastIndexOf(".") + 1); if (IsImageOrFlashExt(fileName) && file.PostedFile.ContentLength < size && file.PostedFile.ContentLength > 0) { DelFile(filePath + "//" + oldpic); file.PostedFile.SaveAs(HttpContext.Current.Server.MapPath(filePath + "//" + fileName)); return true; } else { return false; } } /// <summary> /// 检测文件真实类型 /// </summary> /// <param name="hifile">FileUpload控件对象</param> /// <returns>是否是相关文件类型</returns> /*文件扩展名说明 *7173 gif *255216 jpg *13780 png *6677 bmp *239187 txt,aspx,asp,sql *208207 xls.doc.ppt *6063 xml *6033 htm,html *4742 js *8075 xlsx,zip,pptx,mmap,zip *8297 rar *01 accdb,mdb *7790 exe,dll *5666 psd *255254 rdp *10056 bt种子 *64101 bat */ private static bool IsAllowedExtension(HttpPostedFile hifile) { bool ret = false; System.IO.FileStream fs = new System.IO.FileStream(hifile.FileName, System.IO.FileMode.Open, System.IO.FileAccess.Read); System.IO.BinaryReader r = new System.IO.BinaryReader(fs); string fileclass = ""; byte buffer; try { buffer = r.ReadByte(); fileclass = buffer.ToString(); buffer = r.ReadByte(); fileclass += buffer.ToString(); } catch { return false; } r.Close(); fs.Close(); String[] fileType = { "255216", "7173", "6677", "13780", "8297", "5549", "870", "87111", "8075" }; for (int i = 0; i < fileType.Length; i++) { if (fileclass == fileType[i]) { ret = true; break; } } return ret; } /// <summary> /// 任意文件上传类 /// </summary> /// <param name="fileName">图片文件名(可返回)</param> /// <param name="file">上传控件名</param> /// <param name="oldfile">原始文件名</param> /// <param name="filePath">存放路径</param> public static void UpLoadFile(ref string fileName, System.Web.UI.WebControls.FileUpload file, string oldfile, string filePath) { fileName = file.PostedFile.FileName; fileName = System.DateTime.Now.ToString("yyMMddhhmmss") + fileName.Substring(fileName.LastIndexOf(".")); DelFile(filePath + "//" + oldfile); file.PostedFile.SaveAs(HttpContext.Current.Server.MapPath(filePath + "//" + fileName)); } #endregion //#region 验证上传附件扩展名 ///// <summary> ///// 验证上传附件扩展名 ///// </summary> ///// <param name="file">FileUpload控件</param> ///// <returns>true表示允许,false不允许</returns> //public static bool ValidExt(System.Web.UI.WebControls.FileUpload file) //{ // BLL.m_config bconfig = new BLL.m_config(); // Model.m_config mconfig = bconfig.GetModel("ValidExt"); // string[] strValiddExt = mconfig.config_value.Split('|'); // bool flag = false; // foreach (string ext in strValiddExt) // { // if (ext == file.FileName.Substring(file.FileName.LastIndexOf('.') + 1).ToLower()) // flag = true; // } // return flag; //} //#endregion /// <summary> /// 会产生graphics异常的PixelFormat /// </summary> private static PixelFormat[] indexedPixelFormats = { PixelFormat.Undefined, PixelFormat.DontCare,PixelFormat.Format16bppArgb1555, PixelFormat.Format1bppIndexed, PixelFormat.Format4bppIndexed,PixelFormat.Format8bppIndexed }; /// <summary> /// 判断图片的PixelFormat 是否在 引发异常的 PixelFormat 之中 /// </summary> /// <param name="imgPixelFormat">原图片的PixelFormat</param> /// <returns></returns> private static bool IsPixelFormatIndexed(PixelFormat imgPixelFormat) { foreach (PixelFormat pf in indexedPixelFormats) { if (pf.Equals(imgPixelFormat)) return true; } return false; } /// <summary> /// 添加图片水印 /// </summary> /// <param name="CmyID">企业ID</param> /// <param name="UpLoadPath">原始图片路径</param> public static string AddWaterMark(string filename, int CmyID, string UpLoadPath) { string newfilename = string.Empty; SanRenCMS.BLL.WaterMarkConfig bwmc = new SanRenCMS.BLL.WaterMarkConfig(); SanRenCMS.Model.WaterMarkConfig mwmc = bwmc.GetModel("CmyID=" + CmyID.ToString()); switch (mwmc.WaterMarkType) { case 1: newfilename = LetterWaterMark(filename, mwmc, UpLoadPath); break; case 2: newfilename = PicWaterMark(filename, mwmc, UpLoadPath); break; } return newfilename; } /// <summary> /// 图片水印上传 /// </summary> /// <param name="FilePicName">上传控件</param> /// <param name="FilePicPath"></param> /// <param name="UpLoadPicPath"></param> /// <returns></returns> public static string PicWaterMark(string filename, SanRenCMS.Model.WaterMarkConfig mwmc, string UpLoadPicPath) { string newfilename = string.Empty; string MarkHWStr = mwmc.WaterMarkSize; //"50|186";//图片水印的高宽 string[] MyWaterMarkHW = MarkHWStr.Split(new char[] { '|' }); string WaterMarkPath = HttpContext.Current.Server.MapPath(mwmc.WaterMarkPhoto); string PicPath = HttpContext.Current.Server.MapPath(UpLoadPicPath) + "//" + filename; newfilename = Guid.NewGuid().ToString() + ".jpg"; string NewPicPath = HttpContext.Current.Server.MapPath(UpLoadPicPath) + "//" + newfilename; int WaterMarkH = int.Parse(MyWaterMarkHW[0]); int WaterMarkW = int.Parse(MyWaterMarkHW[1]); int WaterMarkLight = 80;// 50;//透明度 int WaterMarkPos = mwmc.WaterMarkPosition; //3;//水印图位置（1左上，2右上，3右下，4左下） System.Drawing.Image image = System.Drawing.Image.FromFile(PicPath); System.Drawing.Image copyImage = System.Drawing.Image.FromFile(WaterMarkPath); float[][] numArray2 = new float[5][]; float[] numArray3 = new float[5]; numArray3[0] = 1f; numArray2[0] = numArray3; float[] numArray4 = new float[5]; numArray4[1] = 1f; numArray2[1] = numArray4; float[] numArray5 = new float[5]; numArray5[2] = 1f; numArray2[2] = numArray5; float[] numArray6 = new float[5]; numArray6[3] = ((float)WaterMarkLight) / 100f; numArray2[3] = numArray6; float[] numArray7 = new float[5]; numArray7[4] = 1f; numArray2[4] = numArray7; float[][] newColorMatrix = numArray2; ColorMatrix matrix = new ColorMatrix(newColorMatrix); ImageAttributes imageAttr = new ImageAttributes(); imageAttr.SetColorMatrix(matrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap); Graphics g = null; if (IsPixelFormatIndexed(image.PixelFormat)) { Bitmap bmp = new Bitmap(image.Width, image.Height, PixelFormat.Format32bppArgb); g = Graphics.FromImage(image); } else g = Graphics.FromImage(image); switch (WaterMarkPos) { case 1: g.DrawImage(copyImage, new Rectangle(0, 0, WaterMarkW, WaterMarkH), 0, 0, WaterMarkW, WaterMarkH, GraphicsUnit.Pixel, imageAttr); break; case 2: g.DrawImage(copyImage, new Rectangle(0, image.Height - WaterMarkH, WaterMarkW, WaterMarkH), 0, 0, WaterMarkW, WaterMarkH, GraphicsUnit.Pixel, imageAttr); break; case 3: g.DrawImage(copyImage, new Rectangle(image.Width - WaterMarkW, 0, WaterMarkW, WaterMarkH), 0, 0, WaterMarkW, WaterMarkH, GraphicsUnit.Pixel, imageAttr); break; case 4: g.DrawImage(copyImage, new Rectangle(image.Width - WaterMarkW, image.Height - WaterMarkH, WaterMarkW, WaterMarkH), 0, 0, WaterMarkW, WaterMarkH, GraphicsUnit.Pixel, imageAttr); break; case 5: g.DrawImage(copyImage, new Rectangle((image.Width - WaterMarkW) / 2, (image.Height - WaterMarkH) / 2, WaterMarkW, WaterMarkH), 0, 0, WaterMarkW, WaterMarkH, GraphicsUnit.Pixel, imageAttr); break; } g.Dispose(); image.Save(NewPicPath); image.Dispose(); if (File.Exists(PicPath)) { File.Delete(PicPath); } return newfilename; } /// <summary> /// 添加字体水印 /// </summary> /// <param name="CmyID">企业ID</param> /// <param name="UpLoadPicPath">要加水印图片的路径</param> /// <returns></returns> public static string LetterWaterMark(string filename, SanRenCMS.Model.WaterMarkConfig mwmc, string UpLoadPicPath) { string newfilename = string.Empty; Font f; string PicPath = HttpContext.Current.Server.MapPath(UpLoadPicPath) + "//" + filename; //HttpContext.Current.Response.Write(filename); newfilename = Guid.NewGuid().ToString() + ".jpg"; //DateTime.Now.ToString("yyMMddhhmmss") + ".jpg"; string NewPicPath = HttpContext.Current.Server.MapPath(UpLoadPicPath) + "//" + newfilename; //HttpContext.Current.Response.Write(NewPicPath); string WaterMarkStr = mwmc.WaterMarkWord;//水印文字 int WaterMarkFontSize = mwmc.WaterMarkWorkSize; //文字大小，单位PX string WaterMarkFontName = mwmc.WaterMarkFont;// "华文细黑";//字体 string WaterMarkFontColor = mwmc.WaterMarkWordColor;// "009999";//字体颜色 bool WaterMarkIsBold = mwmc.isStrong == 1 ? true : false;//是否加粗 int WaterMarkPos = mwmc.WaterMarkPosition;//水印位置 System.Drawing.Image image = System.Drawing.Image.FromFile(PicPath); Graphics g = null; if (IsPixelFormatIndexed(image.PixelFormat)) { Bitmap bmp = new Bitmap(image.Width, image.Height, PixelFormat.Format32bppArgb); g = Graphics.FromImage(image); } else g = Graphics.FromImage(image); g.CompositingQuality = CompositingQuality.HighQuality; g.SmoothingMode = SmoothingMode.HighQuality; g.InterpolationMode = InterpolationMode.HighQualityBicubic; g.DrawImage(image, 0, 0, image.Width, image.Height); if (WaterMarkIsBold) { f = new Font(WaterMarkFontName, (float)WaterMarkFontSize, FontStyle.Bold); } else { f = new Font(WaterMarkFontName, (float)WaterMarkFontSize); } Brush b = new SolidBrush(ColorTranslator.FromHtml("#" + WaterMarkFontColor)); string addText = WaterMarkStr; //switch (WaterMarkPos) //{ // case 1: // g.DrawString(addText, f, b, (float)0f, (float)0f); // break; // case 2: // g.DrawString(addText, f, b, (float)0f, (float)0f); // break; // case 3: // g.DrawImage(copyImage, new Rectangle(image.Width - WaterMarkW, image.Height - WaterMarkH, WaterMarkW, WaterMarkH), 0, 0, WaterMarkW, WaterMarkH, GraphicsUnit.Pixel, imageAttr); // break; // case 4: // g.DrawImage(copyImage, new Rectangle(0, image.Height - WaterMarkH, WaterMarkW, WaterMarkH), 0, 0, WaterMarkW, WaterMarkH, GraphicsUnit.Pixel, imageAttr); // break; //} g.DrawString(addText, f, b, (float)(image.Width / 2), (float)(image.Height / 2)); //g.DrawString(addText,f,b, g.Dispose(); try { //HttpContext.Current.Response.Write(NewPicPath); image.Save(NewPicPath, ImageFormat.Jpeg); } catch (Exception exx) { HttpContext.Current.Response.Write(exx.ToString()); } finally { image.Dispose(); } if (File.Exists(PicPath)) { File.Delete(PicPath); } return newfilename; } }