.NET 图片上传接收类

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.IO;using System.Configuration;using System.Web.Configuration;using System.Collections;using System.Text.RegularExpressions;namespace Visaok.ul.UserCenter.dialogs.attachment{ ???public partial class upfile : System.Web.UI.Page ???{ ???????public string s; ???????private string state = "SUCCESS"; ???????protected void Page_Load(object sender, EventArgs e) ???????{ ???????} ???????protected void Button1_Click(object sender, EventArgs e) ???????{ ???????????string[] filetype = { ".rar", ".doc", ".docx", ".zip", ".pdf", ".txt", ".swf", ".mkv", ".avi", ".rm", ".rmvb", ".mpeg", ".mpg", ".ogg", ".mov", ".wmv", ".mp4", ".webm",".jpg" }; ???//文件允许格式 ???????????int size = 100; ??//文件大小限制,单位MB,同时在web.config里配置环境默认为100MB ???????????string uploadpath = Request.MapPath("~/"); ???//取得网站根目录路径 ???????????//格式验证 ???????????if (checkType(filetype)) ???????????{ ???????????????//不允许的文件类型 ???????????????state = "\u4e0d\u5141\u8bb8\u7684\u6587\u4ef6\u7c7b\u578b"; ???????????} ???????????//大小验证 ???????????if (checkSize(size)) ???????????{ ???????????????//文件大小超出网站限制 ???????????????state = "\u6587\u4ef6\u5927\u5c0f\u8d85\u51fa\u7f51\u7ad9\u9650\u5236"; ???????????} ???????????//保存图片 ???????????if (state == "SUCCESS") ???????????{ ???????????????//目录创建 ???????????????string Path = DateTime.Now.ToString("yyMMddHHmmss") + (new Random().Next(0, 99).ToString("00")); ???????????????createFolder(uploadpath + "Peerfile\\"+ Path); ???????????????if (string.IsNullOrEmpty(FileUpload1.FileName)) { Response.Write("未选择文件"); return; } ???????????????FileUpload1.SaveAs(uploadpath + "Peerfile\\" + Path+"\\" + FileUpload1.FileName); ?//存储文件到文件夹 ???????????????FileInfo pathinfo = new FileInfo(uploadpath + "Peerfile\\" + Path + "\\" + FileUpload1.FileName.ToString()); ???????????????string pathtwo = WebConfigurationManager.AppSettings["path"]; ???????????????string RootDirectory = WebConfigurationManager.AppSettings["RootDirectory"]; ???????????????s = "&nbsp;&nbsp;&nbsp;&nbsp;<b><a href=\"" + pathtwo + Path + "/" + pathinfo.Name + "\"><img style=\"display:inline-block;\" src=\"" + RootDirectory + "Peer/PeerCenter/dialogs/attachment/images/icon_rar.gif\">" + pathinfo.Name + "</a></b>&nbsp;&nbsp;&nbsp;&nbsp;"; ???????????????div1.InnerHtml = pathinfo.Name + "上传成功"; ???????????} ???????????else ???????????{ ???????????????div1.InnerHtml = "上传的格式不允许"; ???????????} ???????} ???/** ???* 获取文件信息 ???* @param context ???* @param string ???* @return string ???*/ ???????public string getOtherInfo(HttpContext cxt, string field) ???????{ ???????????string info = null; ???????????if (cxt.Request.Form[field] != null && !String.IsNullOrEmpty(cxt.Request.Form[field])) ???????????{ ???????????????info = field == "fileName" ? cxt.Request.Form[field].Split(‘,‘)[1] : cxt.Request.Form[field]; ???????????} ???????????return info; ???????} ????????/** ????????* 重命名文件 ????????* @return string ????????*/ ???????private string reName() ???????{ ???????????return System.Guid.NewGuid() + getFileExt(); ???????} ???????/** ????????* 文件类型检测 ????????* @return bool ????????*/ ???????private bool checkType(string[] filetype) ???????{ ??????????string currentType = getFileExt(); ???????????return Array.IndexOf(filetype, currentType) == -1; ???????} ???????/** ????????* 文件大小检测 ????????* @param int ????????* @return bool ????????*/ ???????private bool checkSize(int size) ???????{ ???????????//ContentLength ???????????return FileUpload1.PostedFile.ContentLength>= (size * 1024 * 1024); ???????} ???????/** ????????* 获取文件扩展名 ????????* @return string ????????*/ ???????private string getFileExt() ???????{ ???????????string[] temp = FileUpload1.FileName.Split(‘.‘); ???????????return "." + temp[temp.Length - 1].ToLower(); ???????} ???????/** ????????* 按照日期自动创建存储文件夹 ????????*/ ???????private void createFolder(string fintPath) ???????{ ???????????if (!Directory.Exists(fintPath)) ???????????{ ???????????????Directory.CreateDirectory(fintPath); ???????????} ???????} ???????/** ????????* 删除存储文件夹 ????????* @param string ????????*/ ???????public void deleteFolder(string path) ???????{ ???????????//if (Directory.Exists(path)) ???????????//{ ???????????// ???Directory.Delete(path, true); ???????????//} ???????} ???????public static string Format(string format, string filename) ???????{ ???????????if (String.IsNullOrWhiteSpace(format)) ???????????{ ???????????????format = "{filename}{rand:6}"; ???????????} ???????????string ext = Path.GetExtension(filename); ???????????filename = Path.GetFileNameWithoutExtension(filename); ???????????format = format.Replace("{filename}", filename); ???????????format = new Regex(@"\{rand(\:?)(\d+)\}", RegexOptions.Compiled).Replace(format, ???????????new MatchEvaluator(delegate(Match match) ???????????{ ???????????????var digit = 6; ???????????????if (match.Groups.Count >2) ???????????????{ ???????????????????digit =Convert.ToInt32(match.Groups[2].Value); ???????????????} ???????????????var rand = new Random(); ???????????????return rand.Next((int)Math.Pow(10,digit),(int)Math.Pow(10,digit +1)).ToString(); ???????????})); ???????????format = format.Replace("{time}", DateTime.Now.Ticks.ToString()); ???????????format = format.Replace("{yyyy}", DateTime.Now.Year.ToString()); ???????????format = format.Replace("{yy}", (DateTime.Now.Year % 100).ToString("D2")); ???????????format = format.Replace("{mm}", DateTime.Now.Month.ToString("D2")); ???????????format = format.Replace("{dd}", DateTime.Now.Day.ToString("D2")); ???????????format = format.Replace("{hh}", DateTime.Now.Hour.ToString("D2")); ???????????format = format.Replace("{ii}", DateTime.Now.Minute.ToString("D2")); ???????????format = format.Replace("{ss}", DateTime.Now.Second.ToString("D2")); ???????????var invalidPattern = new Regex(@"[\\\/\:\*\?\042\<\>\|]"); ???????????format = invalidPattern.Replace(format, ""); ???????????return format + ext; ???????} ???}}