asp.net实现大文件上传
需要下载NeatUpload插件
上传页面:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="index.aspx.cs" Inherits="_Default" %> <%@ Register Assembly="Brettle.Web.NeatUpload" Namespace="Brettle.Web.NeatUpload" TagPrefix="Upload" %> <!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> <link href="easyui/themes/default/easyui.css" rel="stylesheet" type="text/css" /> <link href="easyui/themes/icon.css" rel="stylesheet" type="text/css" /> <script src="easyui/jquery.min.js" type="text/javascript"></script> <script src="easyui/jquery.easyui.min.js" type="text/javascript"></script> </head> <body> <form id="form1" runat="server"> <div class="easyui-panel" style="padding:5px;"> <Upload:ProgressBar ID="ProgressBar1" runat='server'> </Upload:ProgressBar> <br /> <Upload:InputFile ID="AttachFile" runat="server" /> <br /> <br /> <asp:LinkButton ID="BtnUP" runat="server" class="easyui-linkbutton" data-options="iconCls:'icon-add'" onclick="BtnUP_Click">上 传</asp:LinkButton><br /><br /> <a href="Down.aspx">查看下载</a> </div> </form> </body> </html>
后台源码:
protected void BtnUP_Click(object sender, EventArgs e) { if (AttachFile.HasFile) { string FileName = this.AttachFile.FileName;//获取上传文件的文件名,包括后缀 string ExtenName = System.IO.Path.GetExtension(FileName);//获取扩展名 string SaveFileName = System.IO.Path.Combine(System.Web.HttpContext.Current.Request.MapPath("UpLoads/"), DateTime.Now.ToLongDateString().ToString() + "-" + FileName);//合并两个路径为上传到服务器上的全路径 AttachFile.MoveTo(SaveFileName, Brettle.Web.NeatUpload.MoveToOptions.Overwrite); string url = "UpLoads/" + DateTime.Now.ToString("yyyyMMddhhmmss") + ExtenName; //文件保存的路径 float FileSize = (float)System.Math.Round((float)AttachFile.ContentLength / 1024000, 1); //获取文件大小并保留小数点后一位,单位是M Response.Write("<script>alert('恭喜您,上传成功!')</script>"); } else { Response.Write("<script>alert('请选择文件!')</script>"); } }
这里直接获取上传文件夹文件名称提供下载
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Down.aspx.cs" Inherits="Down" %> <!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> <link href="easyui/themes/default/easyui.css" rel="stylesheet" type="text/css" /> <link href="easyui/themes/icon.css" rel="stylesheet" type="text/css" /> <script src="easyui/jquery.min.js" type="text/javascript"></script> <script src="easyui/jquery.easyui.min.js" type="text/javascript"></script> <style type="text/css"> .div_style ul li { list-style-type: decimal; border-bottom:1px dashed #E3E3E3; margin-bottom:5px; } .div_style ul li a { text-decoration: none; cursor: pointer; font-size: 16px; } </style> </head> <body> <form id="form1" runat="server"> <div class="div_style easyui-panel" style="padding: 5px;"> <a href="index.aspx">上传文件</a> <asp:Label ID="Label1" runat="server" Text=""></asp:Label> <ul id="www_zzjs_net"> <%if (files.Length == 0) { Label1.Text = "暂无文件"; } else { foreach (System.IO.FileInfo item in files) {%> <li><a href="Default2.aspx?1=<%=item%>"> <%=item %></a> <a href="delete.aspx?1=<%=item%>" onclick="javascript:return confirm('确定删除吗?');" >删除附件</a> </li> <% } }%> </ul> </div> <div id="changpage"></div> <%--js分页--%> <%--<script language="javascript"> var obj, j; var page = 0; var nowPage = 0; //当前页 var listNum = 25; //每页显示<ul>数 var PagesLen; //总页数 var PageNum = 4; //分页链接接数(5个) onload = function () { obj = document.getElementById("www_zzjs_net").getElementsByTagName("li"); j = obj.length PagesLen = Math.ceil(j / listNum); upPage(0) } function upPage(p) { nowPage = p //内容变换 for (var i = 0; i < j; i++) { obj[i].style.display = "none" } for (var i = p * listNum; i < (p + 1) * listNum; i++) { if (obj[i]) obj[i].style.display = "block" } //欢迎来到站长特效网,我们的网址是www.zzjs.net,很好记,zz站长,js就是js特效,本站收集大量高质量js代码,还有许多广告代码下载。 //分页链接变换 strS = '<a href="###" onclick="upPage(0)">首页</a> ' var PageNum_2 = PageNum % 2 == 0 ? Math.ceil(PageNum / 2) + 1 : Math.ceil(PageNum / 2) var PageNum_3 = PageNum % 2 == 0 ? Math.ceil(PageNum / 2) : Math.ceil(PageNum / 2) + 1 var strC = "", startPage, endPage; if (PageNum >= PagesLen) { startPage = 0; endPage = PagesLen - 1 } else if (nowPage < PageNum_2) { startPage = 0; endPage = PagesLen - 1 > PageNum ? PageNum : PagesLen - 1 } //首页 else { startPage = nowPage + PageNum_3 >= PagesLen ? PagesLen - PageNum - 1 : nowPage - PageNum_2 + 1; var t = startPage + PageNum; endPage = t > PagesLen ? PagesLen - 1 : t } for (var i = startPage; i <= endPage; i++) { if (i == nowPage) strC += '<a href="###" style="color:red;font-weight:700;" onclick="upPage(' + i + ')">' + (i + 1) + '</a> ' else strC += '<a href="###" onclick="upPage(' + i + ')">' + (i + 1) + '</a> ' } //欢迎来到站长特效网,我们的网址是www.zzjs.net,很好记,zz站长,js就是js特效,本站收集大量高质量js代码,还有许多广告代码下载。 strE = ' <a href="###" onclick="upPage(' + (PagesLen - 1) + ')">尾页</a> ' strE2 = nowPage + 1 + "/" + PagesLen + "页" + " 共" + j + "条" document.getElementById("changpage").innerHTML = strS + strC + strE + strE2 } </script>--%> </form> </body> </html>
//下面是后台代码
public FileInfo[] files { set; get; }
protected void Page_Load(object sender, EventArgs e)
{
string dirPath = HttpContext.Current.Server.MapPath("~/UpLoads");
if (Directory.Exists(dirPath))
{
DirectoryInfo dir = new DirectoryInfo(dirPath);
files = dir.GetFiles("*.*");
}
if (files.Length == 0) { Label1.Text = "暂无文件"; }
}
//这是新建另一个页面提供下载的代码
if (Request.QueryString["1"] != null)
{
string _filename = Request.QueryString["1"].ToString(), _filepath = System.IO.Path.Combine(MapPath("~/UpLoads"), _filename);
if (System.IO.File.Exists(_filepath))
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("Content-Disposition", "attachment;filename=" + _filename);
Response.ContentType = "application/unknow";
Response.TransmitFile(_filepath);
Response.End();
}
}
//这是新建另一个页面提供删除操作(后台)
string _filename = Request.QueryString["1"].ToString(), _filepath = System.IO.Path.Combine(MapPath("~/UpLoads"), _filename);
if (System.IO.File.Exists(_filepath))
{
File.Delete(_filepath);
Response.Write("<script language=javascript>alert('删除成功!');window.location = 'Down.aspx';</script>");
//Response.Redirect("Down.aspx");
}