ASP.NET文件的上传和下载

HTML部分 

<%@PageLanguage=”C#”AutoEventWireup=”true”CodeBehind=”index.aspx.cs”Inherits=”up6.index” %>

<!DOCTYPEhtmlPUBLIC“-//W3C//DTD XHTML 1.0 Transitional//EN”“http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”>

<htmlxmlns=”http://www.w3.org/1999/xhtml”>

<head>

     <metahttp-equiv=”Content-Type”content=”text/html; charset=gb2312″/>

    <title>up6-多标签演示页面</title>

    <linkhref=”js/up6.css”type=”text/css”rel=”Stylesheet”charset=”gb2312″/>

    <scripttype=”text/javascript”src=”js/jquery-1.4.min.js”></script>

    <scripttype=”text/javascript”src=”js/json2.min.js”charset=”utf-8″></script>

    <scripttype=”text/javascript”src=”js/up6.config.js”charset=”utf-8″></script>

    <scripttype=”text/javascript”src=”js/up6.app.js”charset=”utf-8″></script>

    <scripttype=”text/javascript”src=”js/up6.edge.js”charset=”utf-8″></script>

    <scripttype=”text/javascript”src=”js/up6.file.js”charset=”utf-8″></script>

    <scripttype=”text/javascript”src=”js/up6.folder.js”charset=”utf-8″></script>

    <scripttype=”text/javascript”src=”js/up6.js”charset=”utf-8″></script>

    <scriptlanguage=”javascript”type=”text/javascript”>

        var cbMgr = new HttpUploaderMgr();

        cbMgr.event.md5Complete = function (obj, md5) { /*alert(md5);*/ };

        cbMgr.event.fileComplete = function (obj) { /*alert(obj.fileSvr.pathSvr);*/ };

        cbMgr.event.queueComplete = function () { $(document.body).append(队列完成<br/>”); }

        cbMgr.event.addFdError = function (jv) { alert(本地路径不存在:” + jv.path); };

        cbMgr.event.scanComplete = function (obj) { /*alert(obj.folderSvr.pathLoc);*/ };

        cbMgr.Config[“Cookie”] = ‘ASP.NET_SessionId=<%=Session.SessionID%>;

        cbMgr.Config.Fields[“uid”] = 0;

 

        $(function ()

        {

            cbMgr.load_to(“FilePanel”);

            //上传指定文件

            $(“#btnUpF”).click(function () {

                var path = $(“#filePath”).val();

                cbMgr.app.addFile({ pathLoc: path });

            });

            //上传指定目录

            $(“#btnUpFd”).click(function () {

                var path = $(“#folderPath”).val();

                cbMgr.app.addFolder({ pathLoc: path });

            });

        });

    </script>

</head>

<body>

    <p>up6多标签上传演示页面</p>

    <p><ahref=”db/clear.aspx”target=”_blank”>清空数据库</a></p>

    <p><ahref=”filemgr/index.aspx”target=”_blank”>文件管理器演示</a></p>

    <p><ahref=”index2.aspx”target=”_blank”>单面板演示</a></p>

    <p><ahref=”down2/index.htm”target=”_blank”>打开下载页面</a></p>

    <p><ahref=”index-single.htm”target=”_blank”>单文件上传演示</a></p>

    <p>

        文件路径:<inputid=”filePath”type=”text”size=”50″value=”D:\\360safe-inst.exe”/>&nbsp;

        <inputid=”btnUpF”type=”button”value=”上传本地文件”/>

    </p>

    <p>

        目录路径:<inputid=”folderPath”type=”text”size=”50″value=”C:\\Users\\Administrator\\Desktop\\test”/>&nbsp;

        <inputid=”btnUpFd”type=”button”value=”上传本地目录”/>

    </p>

     <divid=”FilePanel”></div>

    <divid=”msg”></div>

</body>

</html>

 

代码部分 

using  System; 

using  System.Collections; 

using  System.ComponentModel; 

using  System.Data; 

using  System.Drawing; 

using  System.Web; 

using  System.Web.SessionState; 

using  System.Web.UI; 

using  System.Web.UI.WebControls; 

using  System.Web.UI.HtmlControls; 

 

namespace  WebPortal 

{ 

           ///  <summary> 

           ///  UpLoad  的摘要说明。 

           ///  实现多文件上传 

           ///  </summary> 

           public  class  Upload  :  System.Web.UI.Page 

           { 

                       protected  System.Web.UI.WebControls.Button  UploadButton; 

                       protected  System.Web.UI.WebControls.Label  strStatus; 

 

                       private  void  Page_Load(object  sender,  System.EventArgs  e) 

                       { 

                                   ///  在此处放置用户代码以初始化页面 

                                   if  (this.IsPostBack)  this.SaveImages(); 

                       } 

 

                       private  Boolean  SaveImages() 

                       { 

                                   ///’遍历File表单元素 

                                   HttpFileCollection  files    =  HttpContext.Current.Request.Files; 

 

                                   ///  ‘状态信息 

                                   System.Text.StringBuilder  strMsg  =  new  System.Text.StringBuilder(); 

                                   strMsg.Append(上传的文件分别是:<hr  color=red>”); 

                                   try 

                                   { 

                                               for(int  iFile  =  0;  iFile  <  files.Count;  iFile++) 

                                               { 

                                                           ///’检查文件扩展名字  

                                                           HttpPostedFile  postedFile  =  files[iFile]; 

                                                           string  fileName,  fileExtension; 

                                                           fileName  =  System.IO.Path.GetFileName(postedFile.FileName); 

                                                           if  (fileName  !=  “”) 

                                                           { 

                                                                       fileExtension  =  System.IO.Path.GetExtension(fileName); 

                                                                       strMsg.Append(上传的文件类型:”  +  postedFile.ContentType.ToString()  +  “<br>”); 

                                                                       strMsg.Append(客户端文件地址:”  +  postedFile.FileName  + “<br>”); 

                                                                       strMsg.Append(上传文件的文件名:”  +  fileName  +  “<br>”); 

                                                                       strMsg.Append(上传文件的扩展名:”  +  fileExtension  +  “<br><hr>”); 

                                                                       ///’可根据扩展名字的不同保存到不同的文件夹 

                                                                       ///注意:可能要修改你的文件夹的匿名写入权限。 

                                                                       postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath(“images/”)  +  fileName); 

                                                           } 

                                               } 

                                               strStatus.Text  =  strMsg.ToString(); 

                                               return  true; 

                                   } 

                                   catch(System.Exception  Ex) 

                                   { 

                                               strStatus.Text  =  Ex.Message; 

                                               return  false; 

                                   } 

                       } 

                       #region  Web  窗体设计器生成的代码 

                       override  protected  void  OnInit(EventArgs  e) 

                       { 

                                   // 

                                   //  CODEGEN:  该调用是  ASP.NET  Web  窗体设计器所必需的。 

                                   // 

                                   InitializeComponent(); 

                                   base.OnInit(e); 

                       } 

 

                       ///  <summary> 

                       ///  设计器支持所需的方法  –  不要使用代码编辑器修改 

                       ///  此方法的内容。 

                       ///  </summary> 

                       private  void  InitializeComponent() 

                       {         

                                   this.ID  =  “Upload”; 

                                   this.Load  +=  new  System.EventHandler(this.Page_Load); 

 

                       } 

                       #endregion 

           }

}

 

选择文件夹

 

js部分

后端代码逻辑大部分是相同的,目前能够支持MySQL,Oracle,SQL。在使用前需要配置一下数据库,可以参考我写的这篇文章:http://blog.ncmem.com/wordpress/2019/08/07/java超大文件上传与下载/