WEB文件上传下载在日常工作中经常用到的功能
这里用到JS库
https://files.cnblogs.com/meilibao/ajaxupload.3.5.js
上传代码段（HTML）
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="UrlTest.aspx.cs" Inherits="WebDome.UrlTest" %>
<!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/ajaxupload.3.5.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
var btnUpload = $('#lblFile');
var status = $('#lblstatus');
new AjaxUpload(btnUpload, {
action: '/Upload.aspx',
name: 'txtFile',
onSubmit: function (file, ext) {
if (!(ext && /^(xls|doc|xlsx|docx|pdf|swf|zip|rar)$/.test(ext))) {
status.text('温馨提示：只能上传Excel、Word、PDF,ZIP,RAR或者SWF文件。');
return false;
}
status.text('正在上传，请稍候...');
},
onComplete: function (file, response) {
status.text('');
$("#hdFilePath").val('');
var c = response.substring(0, 2);
var t = response.substring(3);
if (c === "00") {
status.text('上传成功。文件名称：' + response.substring(70));
$("#hdFilePath").val(response.substring(15));
} else {
status.text(t);
}
}
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
</form>
</body>
</html>
---下面是Upload.aspx处理上传文件
protected void Page_Load(object sender, EventArgs e)
{
try
{
string sPath = "/UploadFile/" + DateTime.Now.ToString("yyyyMMdd") + @"\" + CurrentAdmin.OpId + @"\";
string path = Server.MapPath(sPath);
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
HttpPostedFile hpfFile = Request.Files["txtFile"];
if (hpfFile.ContentLength == 0)
throw new Exception("文件大小为0字节，上传文件失败！");
string extendName = hpfFile.FileName.Substring(hpfFile.FileName.LastIndexOf("."));
string tempFileName = Guid.NewGuid().ToString() + "_" + hpfFile.FileName.Substring(0, hpfFile.FileName.LastIndexOf("."));
hpfFile.SaveAs(path + tempFileName + extendName);
Response.Write("00|" + sPath + tempFileName + extendName);
} catch (Exception ex)
{
Response.Write("02|" + ex.Message);
}
}
--上传文件END---
下载文件
页面HTML
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="FileDownload.aspx.cs" Inherits="WebDome.FileDownload" %>
<!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> </head> <body> <form id="form1" runat="server"> <div>
<asp:LinkButton ID="lkbtnDownload"
CommandArgument="/UploadFile/<%=fileName%>" runat="server"
style=" text-decoration:none;color:Black;" onclick="lkbtnDownload_Click">LinkButton</asp:LinkButton>
</div> </form> </body> </html>
---DownLoad--Method
public static void DownLoadFile(System.Web.UI.WebControls.LinkButton LinkButton1, System.Web.UI.Page page)
{
string filePath = page.Server.MapPath(LinkButton1.CommandArgument as string);
System.IO.FileInfo fileInfo = new System.IO.FileInfo(filePath);
string fileName = fileInfo.Name;
string fileextend = fileInfo.Extension;
string contentType = "";
if (fileextend == ".xls")
contentType = "application/vnd.ms-excel";
if (fileextend == ".xlsx")
contentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
if (fileextend == ".doc")
contentType = "application/msword";
if (fileextend == ".docx")
contentType = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
if (fileextend == ".pdf")
contentType = "application/pdf";
if (fileextend == ".swf")
contentType = "application/x-shockwave-flash";
page.Response.Clear();
page.Response.ClearContent();
page.Response.ClearHeaders();
page.Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName.Substring(37), System.Text.Encoding.UTF8));
page.Response.AddHeader("Content-Length", fileInfo.Length.ToString());
page.Response.AddHeader("Content-Transfer-Encoding", "binary");
page.Response.ContentType = contentType;
page.Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
page.Response.WriteFile(fileInfo.FullName);
page.Response.Flush();
page.Response.Close();
}
搞定--------------------
