上传文件功能

最近项目上的一个上传文件功能，贴出来大家一起分享下，项目是MVC+EF+LigerUI 来做的

 

<script type="text/javascript" src="/Content/uploadify/jquery.uploadify.min.js"></script>

<link href="/Content/uploadify/uploadify.css" type="text/css" rel="stylesheet" />

页面需要引用这个JS 跟 CSS

 

首先在页面添加Upload.ashx

 

然后代码如下：

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;

            }

        }

    }

}

页面前台处理如下图：

#FilesUrl 是一个文本框，将上传文件的路径赋值进去，将地址存入数据库，后续直接根据地址可以下载查看