1 <head>
2 <title>图片上传</title>
3 <script src="../Scripts/jquery-1.7.1.js"></script>
4 <script type="text/javascript">
5 $(function () {
6 $(":file").change(function(){
7 // alert("change");
8
9 //拿到文件名
10 // alert($(this).val());
11
12 //获取后缀
13 var fileName = $(this).val();
14 var ext = fileName.substr(fileName.lastIndexOf('.'));
15 if (ext ==".jpg" || ext==".jpeg" || ext==".png" || ext ==".gif") {
16 return true
17 } else {
18 //清空选中文件
19 $(this).val("");
20 alert("请选择正确文件");
21 }
22 });
23
24 });
25
26 </script>
27
28 </head>
29 <body>
30 <form action="ImageUpload.ashx" method="post" enctype="multipart/form-data">
31
32 <input type="file" name="imgFile" />
33 <input type="submit" name="name" value="上传 " />
34
35 </form>
36 <!--<form action="ImageUpload.ashx" method="post">
37 <input type="text" name="txtName" value=" " />
38 <input type="submit" name="name" value="提交 " />
39
40 </form>-->
41 </body>
1 context.Response.ContentType = "text/html";
2
3 //拿到上传的文件
4 HttpPostedFile file = context.Request.Files["imgFile"];
5
6 //后台也要校验
7 string ext = file.FileName.Substring(file.FileName.LastIndexOf("."));
8
9 if (!(ext == ".jpg" || ext == ".jpeg" || ext == ".png" || ext == ".gif"))
10 {
11 //不是图片的时候
12 context.Response.Write("shit");
13 context.Response.End();
14
15
16 }
17 else
18 {
19 string path = "/Upload/" + Guid.NewGuid() + file.FileName;
20
21 file.SaveAs(context.Request.MapPath(path));
22
23 string str = string.Format("<html><head></head><body><img src='{0}'/></body></html>", path);
24
25 context.Response.Write(str);
26 }
