ajax/Upload.ashx.cs

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using System;
using System.Collections.Generic;
using System.IO;
using System.Web;

namespace UploadifyDemo.RemoteHandlers {

    public class Upload : IHttpHandler {

        public void ProcessRequest(HttpContext context) {
            //context.Response.ContentType = "text/plain";
            //context.Response.Expires = -1;
 

                HttpPostedFile postedFile = context.Request.Files["Filedata"];

                string photoName1 = postedFile.FileName; //获取初始文件名    
                int i = photoName1.LastIndexOf("."); //取得文件名中最后一个"."的索引    
                string newext = photoName1.Substring(i).ToLower(); //获取文件扩展名    
                if (newext == ".aspx" || newext == ".asp" || newext == ".php" || newext == ".jsp" || newext == ".cgi" || newext == ".asa" || newext == ".ashx")
                {
                    context.Response.Write("文件格式不正确!");
                    context.Response.End();
                }
                DateTime now = DateTime.Now; //获取系统时间    

                string nyr = "/file/" + get.nyrsfm();
                //System.IO.Directory.CreateDirectory(Server.MapPath(nyr));//这里是不改变文件名
                //string photoName2 = nyr + "/" + fileName;// +"" + fileName;//这里是不改变文件名
                string photoName2 = nyr + newext;

                postedFile.SaveAs(context.Server.MapPath(photoName2)); // 保存文件到路径,用Server.MapPath()取当前文件的绝对目录.在asp.net里"\"必须用""代替

                //this.TextBoxname.Text = "/file/" + photoName2;

                if (context.Request.QueryString["yzm"] != null)
                {
                    photoName2 = new WaterImageManage().DrawWords(photoName2, "www.albeads.com", 0.3F, ImagePosition.Center, context.Server.MapPath("/"));
                }

                string sqlstring = "insert into filedata (filename,fileurl,times) values('" + postedFile.FileName.Substring(0, photoName1.LastIndexOf(".")) + "','" + photoName2 + "','" + DateTime.Now.ToString().ToString() + "')";
                new AcsHelper().ExecuteNonQuery(sqlstring);

                context.Response.Write(photoName2);
                context.Response.StatusCode = 200;


        }

        public bool IsReusable {
            get {
                return false;
            }
        }
    }
}