jquery上传文件
http://hi.baidu.com/shouxin1014/blog/item/43aa70504fb6f6998c5430b5.html
客户端代码：
<link href="uploadJs/jquery.uploadify-v2.1.4/uploadify.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="uploadJs/jquery.uploadify-v2.1.4/jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="uploadJs/jquery.uploadify-v2.1.4/swfobject.js"></script>
<script type="text/javascript" src="uploadJs/jquery.uploadify-v2.1.4/jquery.uploadify.v2.1.4.min.js"></script>
<script type="text/javascript">
$(document).ready(function()
{
$("#uploadify").uploadify({
'uploader': '/uploadJs/jquery.uploadify-v2.1.4/uploadify.swf',
'script': '/uploadJs/uploadfile.ashx',//后台处理
'cancelImg': '/uploadJs/jquery.uploadify-v2.1.4/cancel.png',//单个取消按钮
'folder': '/uploadfile',//文件夹
'queueID': 'fileQueue',//文件队列
'auto': false,
'multi': true,//多文件上传，
'simUploadLimit':'3',//允许多文件上传的文件数
'fileExt':'*.doc;*.pdf;*.rar;*.zip;*.7z;*.chm',//.jpg,.bmp,.gif,.png,.doc,.pdf,.rar,.zip,.7z,
'fileDesc':'*.doc;*.pdf;*.rar;*.zip;*.7z;*.chm',
'buttonText':'select',
'buttonImg':'/images/gerennav2.gif',
'width':'100',
'height':'32',
'sizeLimit':'6000000',//大小限制，6M
onError:function(event, queueID, fileObj)
{
alert('error '+d.type+": "+d.info);
},
onComplete:function(event, queueID, fileObj, response, data)
{
//alert("成功上传,平均速率："+data.speed+"kb/s");
if(response=="0")
$("#haveupfile").append("<p style='color:#f00'>上传"+fileObj.name+"失败！<a onclick='deletefile(\"\",this)'>删除</a></p>");
else if(response=="1")
$("#haveupfile").append("<p style='color:#f00'>"+fileObj.name+"文件格式错误！<a onclick='deletefile(\"\",this)'>删除</a></p>");
else
$("#haveupfile").append("<p>上传<b>"+response+"</b>成功！<a onclick='deletefile(\""+response+"\",this)' style='cursor:pointer;'>删除</a></p>");
},
// onAllComplete:function(e,d)
// {
// //alert("成功上传"+d.filesUploaded+"个文件，错误："+d.errors);
// },
onSelect:function(e,q,f)
{
if(f.size>5242880)
{
alert("文件大小超过限制！请重新选择");
uploadifyCancel(q);
}
}
});
});
function deletefile(url,obj){
if(url!="")
{
$.post("/uploadJs/delfile.ashx",{"fileurl":url},function(_result){
if(_result=="1")alert("删除成功！");
else if(_result=="2")alert("删除异常！");
else if(_result=="3")alert("请求失败！");
else if(_result=="4")alert("不存在该文件！");
$(obj).parent().remove();
});
}
else
$(obj).parent().remove();
}
</script>
html：
<div id="fileQueue">
</div>
<input type="file" name="uploadify" id="uploadify" />
<p>
<a href="javascript:$('#uploadify').uploadifyUpload()">上传</a> | <a href="javascript:$('#uploadify').uploadifyClearQueue()">
取消上传</a>
</p>
<div id="haveupfile"></div>
上传后台：
<%@ WebHandler Language="C#" Class="uploadfile" %>
using System;
using System.Web;
using System.IO;
public class uploadfile : IHttpHandler
{
public string extensionlimit = ".jpg,.bmp,.gif,.png,.doc,.pdf,.rar,.zip,.7z,";//用逗号隔开,小写..
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
context.Response.Charset = "utf-8";
HttpPostedFile file = context.Request.Files["Filedata"];
string thepath = @context.Request["folder"];
string uploadPath = HttpContext.Current.Server.MapPath(thepath);
if (file != null)
{
if (extensionlimit.IndexOf(System.IO.Path.GetExtension(file.FileName).ToLower() + ",") > -1)
{
thepath += "\\" + DateTime.Now.Year.ToString() + "-" + DateTime.Now.Month.ToString();
uploadPath += "\\" + DateTime.Now.Year.ToString() + "-" + DateTime.Now.Month.ToString();
if (!Directory.Exists(uploadPath))
{
Directory.CreateDirectory(uploadPath);
}
string reFile = "OA" + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + "-";//前缀文件名
file.SaveAs(uploadPath + "\\" + reFile + file.FileName);
//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
//返回网络路径
thepath += "\\" + reFile + file.FileName;
thepath = thepath.Replace("\\", "/");
context.Response.Write(thepath);
}
else
{
context.Response.Write("1");//扩展验证失败
}
}
else
{
context.Response.Write("0");//验证失败
}
}
public bool IsReusable
{
get
{
return false;
}
}
}
删除后台：
<%@ WebHandler Language="C#" Class="delfile" %>
using System;
using System.Web;
using System.IO;
public class delfile : IHttpHandler {
public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "text/plain";
context.Response.Charset = "utf-8";
if (context.Request.Form["fileurl"] != null)
{
string thefile = HttpContext.Current.Server.MapPath(context.Request.Form["fileurl"]);
if (File.Exists(thefile))
{
try
{
File.Delete(thefile);
context.Response.Write("1");
}
catch { context.Response.Write("2"); }
}
else
{
context.Response.Write("4");
}
}
else
{
context.Response.Write("3");
}
}
public bool IsReusable {
get {
return false;
}
}
}
项目路径