上传文件功能

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

namespace AL.Web {
    /// <summary>
    /// Upload 的摘要说明
    /// </summary>
    public class Upload : IHttpHandler {

        public void ProcessRequest(HttpContext context) {
            context.Response.ContentType = "text/plain";
            //context.Response.Write("Hello World");

            string r = "";
            //此处有时候穿过来的sn后面还有一些乱七八糟的字符，没研究什么意思，就判断一下，截取一下就完事了，小项目~
            string sn = context.Request.QueryString["sn"];
            if (sn != null && sn.Length > 14) sn = sn.Substring(0, 14);

            if (context.User.Identity.IsAuthenticated == false) {
                // 未登录用户                
            }
            try {
                //获取上传的文件数据
                HttpPostedFile file = context.Request.Files["Filedata"];
                string fileName = file.FileName;
                string fileType = Path.GetExtension(fileName).ToLower();
                //由于不同浏览器取出的FileName不同（有的是文件绝对路径，有的是只有文件名），故要进行处理
                if (fileName.IndexOf(‘ ‘) > -1) {
                    fileName = fileName.Substring(fileName.LastIndexOf(‘ ‘) + 1);
                } else if (fileName.IndexOf(‘/‘) > -1) {
                    fileName = fileName.Substring(fileName.LastIndexOf(‘/‘) + 1);
                }
                //上传的目录
                string uploadDir = "~/Content/uploadfile/TMP/" + System.DateTime.Now.ToString("yyyyMM") + "/";
                //上传的路径
                //生成年月文件夹及日文件夹
                if (Directory.Exists(context.Server.MapPath(uploadDir)) == false) {
                    Directory.CreateDirectory(context.Server.MapPath(uploadDir));
                }
                if (Directory.Exists(context.Server.MapPath(uploadDir + System.DateTime.Now.ToString("dd") + "/")) == false) {
                    Directory.CreateDirectory(context.Server.MapPath(uploadDir + System.DateTime.Now.ToString("dd") + "/"));
                }

                uploadDir = uploadDir + System.DateTime.Now.ToString("dd") + "/";

                string uploadPath = uploadDir + FormsAuthentication.HashPasswordForStoringInConfigFile(fileName, "MD5").Substring(0, 8) + fileType;
                //保存文件
                file.SaveAs(context.Server.MapPath(uploadPath));
                //下面这句代码缺少的话，上传成功后上传队列的显示不会自动消失
                //DbHelperOleDb.ExecuteSql("insert into [temp](temp_sn,temp_Content) values(‘" + sn + "‘,‘" + uploadPath + "‘)");

                //Response.Write("1");
                //context.Response.Write("{‘IsError‘:false, ‘Data‘:‘" + uploadPath + "‘}");
                r = "{‘IsError‘:false, ‘Data‘:‘" + uploadPath + "‘}";
            } catch (Exception ex) {
                //Response.Write("0");
                //throw ex;
                //context.Response.Write("{IsError: true, data:‘" + ex.Message + "‘}");
                r = "{‘IsError‘:true, ‘Data‘:‘" + ex.Message + "‘}";
            } finally {
                r = r.Replace("‘", "\"");
                context.Response.Write(r);
                context.Response.End();
            }
        }
        public bool IsReusable {
            get {
                return false;
            }
        }
    }
}