代码改变世界

input file 多文件上传

2012-07-03 13:43  我就是我O(∩_∩)O~  阅读(1222)  评论(0)  编辑  收藏  举报 
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="FileTest.aspx.cs" Inherits="MyShop.Web.FileTest" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script src="Scripts/jquery-1.6.4.min.js" type="text/javascript"></script>
    <script type="text/javascript">
        function addfile() {
            $("#td_file").find("tbody").append("<tr><td>上传文件:<input type='file' id='file1' name='file1' />&nbsp;<a href='#' onclick='delfile(this);'>删除</a></td></tr>");
        }
        function delfile(obj) {
            $(obj).parent().parent().remove();
        }
    </script>
</head>
<body>
    <form id="form1" runat="server" method="post" enctype="multipart/form-data" action="FileTest.aspx">
    <div>
        <input type="button" value="继续添加" onclick="addfile();" />
        <table id="td_file">
            <tr>
                <td>
                    上传文件:<input type="file" id="file1" name="file1" />&nbsp;<a href="#" onclick="delfile(this);">删除</a>
                </td>
            </tr>
        </table>
        <input type="submit" value="提交" />
    </div>
    </form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace MyShop.Web
{
    public partial class FileTest : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (Request.HttpMethod == "POST")
            {
                HttpFileCollection files = HttpContext.Current.Request.Files;
                StringBuilder log = new StringBuilder();
                for (int i = 0; i < files.Count; i++)
                {
                    log.Append("***********第" + (i + 1) + "个文件上传开始***********</br>");
                    HttpPostedFile postFile = files[i];
                    string filename;//文件名
                    string fileExtension;//文件后缀名

                    filename = Path.GetFileName(postFile.FileName);
                    fileExtension = Path.GetExtension(postFile.FileName);
                    //上传后的文件名
                    filename = DateTime.Now.ToString("yyyyMMdd") + "_" + filename;
                    //上传路径
                    string directory = Server.MapPath("~/uploadFiles/");
                    //文件全路径
                    string path = directory + filename;
                    //判断目录是否存在  
                    if (!Directory.Exists(directory))
                    {
                        Directory.CreateDirectory(directory);
                    }
                    //文件存在就删除
                    if(File.Exists(path))
                    {
                        File.Delete(path);
                    }
                    log.Append("上传的文件类型：" + postFile.ContentType + "</br>");
                    log.Append("客户端文件地址：" + postFile.FileName + "</br>");
                    log.Append("上传文件的文件名：" + filename + "</br>");
                    log.Append("上传文件的扩展名：" + fileExtension + "</br>");
                    postFile.SaveAs(path);
                    log.Append("***********第" + (i + 1) + "个文件上传结束***********</br>");
                }
                Response.Write(log.ToString());
            }
        }
    }
}