ASP.NET 文件上传类 简单好用

调用：

 

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UploadFile uf = new UploadFile();   /*可选参数*/ uf.SetIsUseOldFileName(true);//是否使用原始文件名作为新文件的文件名(默认:true),true原始文件名,false系统生成新文件名 uf.SetFileDirectory(Server.MapPath("/file/temp3/"));//文件保存路径(默认:/upload) uf.SetFileType("*");//允许上传的文件类型, 逗号分割,必须全部小写! *表示所有 (默认值: .pdf,.xls,.xlsx,.doc,.docx,.txt,.png,.jpg,.gif )  uf.SetIsRenameSameFile(false);//重命名同名文件？     //文件以时间分目录保存 var message = uf.Save(Request.Files["Fileupload1"]); //  “/file/temp3/2015/4/xx.jpg”   //文件以编号分目录保存 var message2 = uf.Save(Request.Files["Fileupload1"], "001" /*编号*/);  //   “/file/temp3/001/xx.jpg”     //返回信息 var isError = message.Error;//判段是否上传成功 var webPath = message.WebFilePath;//返回web路径 var msg = message.Message;//返回上传信息 var filePath = message.FilePath;//反回文件路径 var isSuccess = message.Error == false;

　　

 

代码：

 

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using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Security.Cryptography; using System.Text.RegularExpressions; using System.Web; using System.Web.Hosting;     namespace SyntacticSugar {     /// <summary>     /// ** 描述：单文件上传类 (暂时不支持多文件上传)     /// ** 创始时间：2015-5-27     /// ** 修改时间：-     /// ** 作者：sunkaixuan     /// </summary>     public class UploadFile     {           private ParamsModel Params;         public UploadFile()         {             Params = new ParamsModel()             {                 FileDirectory = "/upload",                 FileType = ".pdf,.xls,.xlsx,.doc,.docx,.txt,.png,.jpg,.gif",                 MaxSizeM = 10,                 PathSaveType = PathSaveType.dateTimeNow,                 IsRenameSameFile=true             };         }           /// <summary>         /// 文件保存路径(默认:/upload)         /// </summary>         public void SetFileDirectory(string fileDirectory)         {             if (fileDirectory == null)             {                 throw new ArgumentNullException("fileDirectory");             }               var isMapPath = Regex.IsMatch(fileDirectory, @"[a-z]\:\\", RegexOptions.IgnoreCase);             if (isMapPath)             {                 fileDirectory = GetRelativePath(fileDirectory);             }             Params.FileDirectory = fileDirectory;         }                /// <summary>         /// 是否使用原始文件名作为新文件的文件名(默认:true)         /// </summary>         /// <param name="isUseOldFileName">true原始文件名,false系统生成新文件名</param>         public void SetIsUseOldFileName(bool isUseOldFileName)         {             Params.IsUseOldFileName = isUseOldFileName;         }           /// <summary>         /// 允许上传的文件类型, 逗号分割,必须全部小写! *表示所有 (默认值: .pdf,.xls,.xlsx,.doc,.docx,.txt,.png,.jpg,.gif )          /// </summary>         public void SetFileType(string fileType)         {             Params.FileType = fileType;         }         /// <summary>         /// 允许上传多少大小(单位：M)         /// </summary>         public void SetMaxSizeM(double maxSizeM)         {             Params.MaxSizeM = maxSizeM;         }         /// <summary>         /// 重命名同名文件？         /// </summary>         /// <param name="isRenameSameFile">true:重命名,false覆盖</param>         public void SetIsRenameSameFile(bool isRenameSameFile)         {             Params.IsRenameSameFile = isRenameSameFile;         }             /// <summary>         /// 保存表单文件         /// </summary>         /// <param name="postFile">HttpPostedFile</param>         /// <returns></returns>         public ResponseMessage Save(HttpPostedFile postFile)         {             return CommonSave(postFile);         }               /// <summary>         /// 保存表单文件,根据编号创建子文件夹         /// </summary>         /// <param name="postFile">HttpPostedFile</param>         /// <param name="number">编号</param>         /// <returns></returns>         public ResponseMessage Save(HttpPostedFile postFile, string number)         {               Params.PathSaveType = PathSaveType.code;             _Number = number;             return CommonSave(postFile);         }             /// <summary>         /// 保存表单文件,根据HttpPostedFile         /// </summary>         /// <param name="postFile">HttpPostedFile</param>         /// <param name="isRenameSameFile">值为true 同名文件进行重命名，false覆盖原有文件</param>         /// <param name="fileName">新的文件名</param>         /// <returns></returns>         private ResponseMessage CommonSave(HttpPostedFile postFile)         {               ResponseMessage reval = new ResponseMessage();             try             {                 if (postFile == null || postFile.ContentLength == 0)                 {                     TryError(reval, "没有文件！");                     return reval;                 }                   //文件名                 string fileName = Params.IsUseOldFileName ? postFile.FileName : DateTime.Now.ToString("yyyyMMddhhmmssms") + Path.GetExtension(postFile.FileName);                   //验证格式                 this.CheckingType(reval, postFile.FileName);                 //验证大小                 this.CheckSize(reval, postFile);                   if (reval.Error) return reval;                     string webDir = string.Empty;                 // 获取存储目录                 var directory = this.GetDirectory(ref webDir);                 var filePath = directory + fileName;                 if (System.IO.File.Exists(filePath))                 {                     if (Params.IsRenameSameFile)                     {                         filePath = directory + DateTime.Now.ToString("yyyyMMddhhssms") + "-" + fileName;                     }                     else                     {                         System.IO.File.Delete(filePath);                     }                 }                 // 保存文件                 postFile.SaveAs(filePath);                 reval.FilePath = filePath;                 reval.FilePath = webDir + fileName;                 reval.FileName = fileName;                 reval.WebFilePath = webDir + fileName;                 return reval;             }             catch (Exception ex)             {                 TryError(reval, ex.Message);                 return reval;             }         }           private void CheckSize(ResponseMessage message, HttpPostedFile PostFile)         {             if (PostFile.ContentLength / 1024.0 / 1024.0 > Params.MaxSizeM)             {                 TryError(message, string.Format("对不起上传文件过大，不能超过{0}M！", Params.MaxSizeM));             }         }         /// <summary>         /// 根据物理路径获取相对路径         /// </summary>         /// <param name="fileDirectory"></param>         /// <param name="sever"></param>         /// <returns></returns>         private static string GetRelativePath(string fileDirectory)         {             var sever = HttpContext.Current.Server;             fileDirectory = "/" + fileDirectory.Replace(sever.MapPath("~/"), "").TrimStart('/').Replace('\\', '/');             return fileDirectory;         }           /// <summary>         /// 获取目录         /// </summary>         /// <returns></returns>         private string GetDirectory(ref string webDir)         {             var sever = HttpContext.Current.Server;             // 存储目录             string directory = Params.FileDirectory;               // 目录格式             string childDirectory = DateTime.Now.ToString("yyyy-MM/dd");             if (Params.PathSaveType == PathSaveType.code)             {                 childDirectory = _Number;             }             webDir = directory.TrimEnd('/') + "/" + childDirectory + '/';             string dir = sever.MapPath(webDir);             // 创建目录             if (Directory.Exists(dir) == false)                 Directory.CreateDirectory(dir);             return dir;         }           /// <summary>         /// 验证文件类型)         /// </summary>         /// <param name="fileName"></param>         private void CheckingType(ResponseMessage message, string fileName)         {             if (Params.FileType != "*")             {                 // 获取允许允许上传类型列表                 string[] typeList = Params.FileType.Split(',');                   // 获取上传文件类型(小写)                 string type = Path.GetExtension(fileName).ToLowerInvariant(); ;                   // 验证类型                 if (typeList.Contains(type) == false)                     this.TryError(message, "文件类型非法!");             }         }           /// <summary>         /// 抛出错误         /// </summary>         /// <param name="Msg"></param>         private void TryError(ResponseMessage message, string msg)         {             message.Error = true;             message.Message = msg;         }           #region models           private class ParamsModel         {             /// <summary>             /// 文件保存路径             /// </summary>             public string FileDirectory { get; set; }             /// <summary>             /// 允许上传的文件类型, 逗号分割,必须全部小写!             /// </summary>             public string FileType { get; set; }             /// <summary>             /// 允许上传多少大小             /// </summary>             public double MaxSizeM { get; set; }             /// <summary>             /// 路径存储类型             /// </summary>             public PathSaveType PathSaveType { get; set; }             /// <summary>             /// 重命名同名文件?             /// </summary>             public bool IsRenameSameFile { get; set; }             /// <summary>             /// 是否使用原始文件名             /// </summary>             public bool IsUseOldFileName { get; set; }         }             /// <summary>         /// 路径存储类型         /// </summary>         public enum PathSaveType         {             /// <summary>             /// 根据时间创建存储目录             /// </summary>             dateTimeNow = 0,             /// <summary>             /// 根据ID编号方式来创建存储目录             /// </summary>             code = 1           }         private string _Number { get; set; }           /// <summary>         /// 反回信息         /// </summary>         public class ResponseMessage         {             /// <summary>             /// 上传错误             /// </summary>             public bool Error { get; set; }             /// <summary>             /// 消息             /// </summary>             public string Message { get; set; }             /// <summary>             /// 文件路径             /// </summary>             public string FilePath { get; set; }             /// <summary>             /// 网站路径             /// </summary>             public string WebFilePath { get; set; }             /// <summary>             /// 获取文件名             /// </summary>             public string FileName { get; set; }           }         #endregion     } }