ajaxfileupload asp.net 的简单使用
本人菜鸟，第一次写博客，不会排版，只是记录工作中常用的东西
ajaxfileupload.js源码：
http://www.rczjp.cn/HTML/110420/20113620053635.html
前台：
<script src="../res/js/jquery-1.4.2.min.js" type="text/javascript"></script>
<script src="ajaxfileupload.js" type="text/javascript"></script>
<script type="text/javascript">
function ajaxFileUpload() {
$.ajaxFileUpload(
{
url: 'Handler.ashx', //需要链接到服务器地址
secureuri: false,
fileElementId: 'FileUpload', //文件选择框的id属性
dataType: 'json', //服务器返回的格式，可以是json
success: function (data, status) //相当于java中try语句块的用法
{
$("#pic_1").attr("src", "../uploadfiles/" + data.msg + "");
},
error: function (data, status, e) //相当于java中catch语句块的用法
{
alert(data.error);
}
}
);
}
</script>
<body>
<table class="pro_pic_tb">
<tbody>
<tr>
<td>
<div class="picdiv3">
<img src="http://www.rhebank.com/admin/images/nopic.jpg" height="100"
width="100">
<div class="picdel" >
<img src="http://www.rhebank.com/admin/images/del.gif" onclick="delPic(1,'resume')"></div>
</div>
<p>
<span class="input-file">上传图片
<asp:FileUpload runat="server" onchange="javascript:ajaxFileUpload();"/>
</span>
<input name="photo" class="hidden" >
</p>
</td>
</tr>
</tbody>
</table>
</body>下面是后台程序源码：
1 <%@ WebHandler Language="C#" Class="Handler" %>
2
3 using System;
4 using System.Web;
5
6 public class Handler : IHttpHandler {
7
8 public void ProcessRequest (HttpContext context) {
9 context.Response.ContentType = "text/plain";
10
11 if (context.Request.Files.Count > 0)
12 {
13 string path = context.Server.MapPath("~/uploadfiles/");
14
15 var file = context.Request.Files[0];
16
17 string fileName;
18
19 if (HttpContext.Current.Request.Browser.Browser.ToUpper() == "IE")
20 {
21 string[] files = file.FileName.Split(new char[] { '\\' });
22 fileName = files[files.Length - 1];
23 }
24 else
25 {
26 fileName = file.FileName;
27 }
28
29
30
31 string msg = "";
32 string strFileName = fileName;
33 if (string.IsNullOrEmpty(strFileName))
34 {
35 msg = "{";
36 msg += string.Format("error:'{0}',\n", "请选择文件！");
37 msg += string.Format("msg:'{0}'\n", string.Empty);
38 msg += "}";
39 }
40 else
41 {
42 fileName = System.IO.Path.Combine(path, fileName);
43 file.SaveAs(fileName);
44
45 msg = "{";
46 msg += string.Format("error:'{0}',\n", string.Empty);
47 msg += string.Format("msg:'{0}'\n", strFileName);
48 msg += "}";
49 }
50 context.Response.Write(msg);
51
52
53 }
54 }
55
56 public bool IsReusable {
57 get {
58 return false;
59 }
60 }
61
62 }没什么特殊的，只是做个标记