DTcms.Web/tools/upload_ajax.ashx.cs

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using System;
using System.Collections;
using System.IO;
using System.Collections.Generic;
using System.Web.SessionState;
using System.Web;
using System.Text.RegularExpressions;
using DTcms.Common;
using DTcms.Web.UI;

namespace DTcms.Web.tools
{
    /// <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 = DTRequest.GetQueryString("action");

            switch (action)
            {
                case "EditorFile": //编辑器文件
                    EditorFile(context);
                    break;
                case "ManagerFile": //管理文件
                    ManagerFile(context);
                    break;
                default: //普通上传
                    UpLoadFile(context);
                    break;
            }

        }

        #region 上传文件处理===================================
        private void UpLoadFile(HttpContext context)
        {
            Model.siteconfig siteConfig = new BLL.siteconfig().loadConfig();
            string _delfile = DTRequest.GetString("DelFilePath");
            HttpPostedFile _upfile = context.Request.Files["Filedata"];
            bool _iswater = false; //默认不打水印
            bool _isthumbnail = false; //默认不生成缩略图

            if (DTRequest.GetQueryString("IsWater") == "1")
                _iswater = true;
            if (DTRequest.GetQueryString("IsThumbnail") == "1")
                _isthumbnail = true;
            if (_upfile == null)
            {
                context.Response.Write("{\"status\": 0, \"msg\": \"请选择要上传文件！\"}");
                return;
            }
            UpLoad upFiles = new UpLoad();
            string msg = upFiles.fileSaveAs(_upfile, _isthumbnail, _iswater);
            //删除已存在的旧文件，旧文件不为空且应是上传文件，防止跨目录删除
            if (!string.IsNullOrEmpty(_delfile) && _delfile.IndexOf("../") == -1 
                && _delfile.ToLower().StartsWith(siteConfig.webpath.ToLower() + siteConfig.filepath.ToLower()))