using System;
using System.Collections;
using System.IO;
using System.Collections.Generic;
using System.Web.SessionState;
using System.Web;
using System.Text.RegularExpressions;
using App.Common;
using LitJson;
using App.Core;namespace App.Admin
{/// <summary>/// 文件上传处理页/// </summary>public class upload_ajax : IHttpHandler, IRequiresSessionState{public void ProcessRequest(HttpContext context){//取得处事类型string action = ContextRequest.GetQueryString("action");switch (action){case "SingleFile": //单文件
                    SingleFile(context);break;case "MultipleFile": //多文件
                    MultipleFile(context);break;case "EditorFile": //编辑器文件
                    EditorFile(context);break;case "ManagerFile": //管理文件
                    ManagerFile(context);break;}}#region 上传单文件处理===================================private void SingleFile(HttpContext context){string _refilepath = ContextRequest.GetQueryString("ReFilePath"); //取得返回的对象名称string _upfilepath = ContextRequest.GetQueryString("UpFilePath"); //取得上传的对象名称string _delfile = ContextRequest.GetString(_refilepath);HttpPostedFile _upfile = context.Request.Files[_upfilepath];bool _iswater = false; //默认不打水印bool _isthumbnail = false; //默认不生成缩略图bool _isimage = false;if (ContextRequest.GetQueryString("IsWater") == "1")_iswater = true;if (ContextRequest.GetQueryString("IsThumbnail") == "1")_isthumbnail = true;if (ContextRequest.GetQueryString("IsImage") == "1")_isimage = true;if (_upfile == null){context.Response.Write("{\"msg\": 0, \"msgbox\": \"请选择要上传文件！\"}");return;}UpLoad upFiles = new UpLoad();string msg = upFiles.fileSaveAs(_upfile, _isthumbnail, _iswater, _isimage);//删除已存在的旧文件
            Utils.DeleteUpFile(_delfile);//返回成功信息
            context.Response.Write(msg);context.Response.End();}#endregion#region 上传多文件处理===================================private void MultipleFile(HttpContext context){string _upfilepath = context.Request.QueryString["UpFilePath"]; //取得上传的对象名称HttpPostedFile _upfile = context.Request.Files[_upfilepath];bool _iswater = false; //默认不打水印bool _isthumbnail = false; //默认不生成缩略图if (ContextRequest.GetQueryString("IsWater") == "1")_iswater = true;if (ContextRequest.GetQueryString("IsThumbnail") == "1")_isthumbnail = true;if (_upfile == null){context.Response.Write("{\"msg\": 0, \"msgbox\": \"请选择要上传文件！\"}");return;}UpLoad upFiles = new UpLoad();string msg = upFiles.fileSaveAs(_upfile, _isthumbnail, _iswater);//返回成功信息
            context.Response.Write(msg);context.Response.End();}#endregion#region 编辑器上传处理===================================private void EditorFile(HttpContext context){bool _iswater = false; //默认不打水印if (context.Request.QueryString["IsWater"] == "1")_iswater = true;HttpPostedFile imgFile = context.Request.Files["imgFile"];if (imgFile == null){showError(context, "请选择要上传文件！");return;}UpLoad upFiles = new UpLoad();string remsg = upFiles.fileSaveAs(imgFile, false, _iswater);//string pattern = @"^{\s*msg:\s*(.*)\s*,\s*msgbox:\s*\""(.*)\""\s*}$"; //键名前和键值前后都允许出现空白字符//Regex r = new Regex(pattern, RegexOptions.IgnoreCase); //正则表达式实例，不区分大小写//Match m = r.Match(remsg); //搜索匹配项//string msg = m.Groups[1].Value; //msg的值，正则表达式中第1个圆括号捕获的值//string msgbox = m.Groups[2].Value; //msgbox的值，正则表达式中第2个圆括号捕获的值 JsonData jd = JsonMapper.ToObject(remsg);string msg = jd["msg"].ToString();string msgbox = jd["msgbox"].ToString();if (msg == "0"){showError(context, msgbox);return;}Hashtable hash = new Hashtable();hash["error"] = 0;hash["url"] = msgbox;context.Response.AddHeader("Content-Type", "text/html; charset=UTF-8");context.Response.Write(JsonMapper.ToJson(hash));context.Response.End();}//显示错误private void showError(HttpContext context, string message){Hashtable hash = new Hashtable();hash["error"] = 1;hash["message"] = message;context.Response.AddHeader("Content-Type", "text/html; charset=UTF-8");context.Response.Write(JsonMapper.ToJson(hash));context.Response.End();}#endregion#region 浏览文件处理=====================================private void ManagerFile(HttpContext context){App.Models.Sys.SysConfig siteConfig = new App.BLL.SysConfigBLL().loadConfig(Utils.GetXmlMapPath("Configpath"));//String aspxUrl = context.Request.Path.Substring(0, context.Request.Path.LastIndexOf("/") + 1);//根目录路径，相对路径String rootPath = siteConfig.webpath + siteConfig.attachpath + "/"; //站点目录+上传目录//根目录URL，可以指定绝对路径，比如 http://www.App.com/attached/String rootUrl = siteConfig.webpath + siteConfig.attachpath + "/";//图片扩展名String fileTypes = "gif,jpg,jpeg,png,bmp";String currentPath = "";String currentUrl = "";String currentDirPath = "";String moveupDirPath = "";String dirPath = Utils.GetMapPath(rootPath);String dirName = context.Request.QueryString["dir"];//if (!String.IsNullOrEmpty(dirName))//{//    if (Array.IndexOf("image,flash,media,file".Split(','), dirName) == -1)//    {//        context.Response.Write("Invalid Directory name.");//        context.Response.End();//    }//    dirPath += dirName + "/";//    rootUrl += dirName + "/";//    if (!Directory.Exists(dirPath))//    {//        Directory.CreateDirectory(dirPath);//    }//}//根据path参数，设置各路径和URLString path = context.Request.QueryString["path"];path = String.IsNullOrEmpty(path) ? "" : path;if (path == ""){currentPath = dirPath;currentUrl = rootUrl;currentDirPath = "";moveupDirPath = "";}else{currentPath = dirPath + path;currentUrl = rootUrl + path;currentDirPath = path;moveupDirPath = Regex.Replace(currentDirPath, @"(.*?)[^\/]+\/$", "$1");}//排序形式，name or size or typeString order = context.Request.QueryString["order"];order = String.IsNullOrEmpty(order) ? "" : order.ToLower();//不允许使用..移动到上一级目录if (Regex.IsMatch(path, @"\.\.")){context.Response.Write("Access is not allowed.");context.Response.End();}//最后一个字符不是/if (path != "" && !path.EndsWith("/")){context.Response.Write("Parameter is not valid.");context.Response.End();}//目录不存在或不是目录if (!Directory.Exists(currentPath)){context.Response.Write("Directory does not exist.");context.Response.End();}//遍历目录取得文件信息string[] dirList = Directory.GetDirectories(currentPath);string[] fileList = Directory.GetFiles(currentPath);switch (order){case "size":Array.Sort(dirList, new NameSorter());Array.Sort(fileList, new SizeSorter());break;case "type":Array.Sort(dirList, new NameSorter());Array.Sort(fileList, new TypeSorter());break;case "name":default:Array.Sort(dirList, new NameSorter());Array.Sort(fileList, new NameSorter());break;}Hashtable result = new Hashtable();result["moveup_dir_path"] = moveupDirPath;result["current_dir_path"] = currentDirPath;result["current_url"] = currentUrl;result["total_count"] = dirList.Length + fileList.Length;List<Hashtable> dirFileList = new List<Hashtable>();result["file_list"] = dirFileList;for (int i = 0; i < dirList.Length; i++){DirectoryInfo dir = new DirectoryInfo(dirList[i]);Hashtable hash = new Hashtable();hash["is_dir"] = true;hash["has_file"] = (dir.GetFileSystemInfos().Length > 0);hash["filesize"] = 0;hash["is_photo"] = false;hash["filetype"] = "";hash["filename"] = dir.Name;hash["datetime"] = dir.LastWriteTime.ToString("yyyy-MM-dd HH:mm:ss");dirFileList.Add(hash);}for (int i = 0; i < fileList.Length; i++){FileInfo file = new FileInfo(fileList[i]);Hashtable hash = new Hashtable();hash["is_dir"] = false;hash["has_file"] = false;hash["filesize"] = file.Length;hash["is_photo"] = (Array.IndexOf(fileTypes.Split(','), file.Extension.Substring(1).ToLower()) >= 0);hash["filetype"] = file.Extension.Substring(1);hash["filename"] = file.Name;hash["datetime"] = file.LastWriteTime.ToString("yyyy-MM-dd HH:mm:ss");dirFileList.Add(hash);}context.Response.AddHeader("Content-Type", "application/json; charset=UTF-8");context.Response.Write(JsonMapper.ToJson(result));context.Response.End();}#region Helperpublic class NameSorter : IComparer{public int Compare(object x, object y){if (x == null && y == null){return 0;}if (x == null){return -1;}if (y == null){return 1;}FileInfo xInfo = new FileInfo(x.ToString());FileInfo yInfo = new FileInfo(y.ToString());return xInfo.FullName.CompareTo(yInfo.FullName);}}public class SizeSorter : IComparer{public int Compare(object x, object y){if (x == null && y == null){return 0;}if (x == null){return -1;}if (y == null){return 1;}FileInfo xInfo = new FileInfo(x.ToString());FileInfo yInfo = new FileInfo(y.ToString());return xInfo.Length.CompareTo(yInfo.Length);}}public class TypeSorter : IComparer{public int Compare(object x, object y){if (x == null && y == null){return 0;}if (x == null){return -1;}if (y == null){return 1;}FileInfo xInfo = new FileInfo(x.ToString());FileInfo yInfo = new FileInfo(y.ToString());return xInfo.Extension.CompareTo(yInfo.Extension);}}#endregion#endregionpublic bool IsReusable{get{return false;}}}
}