for (var i = 1; i <= 32; i++) {
var n = Math.floor(Math.random() * 16.0).toString(16);
guid += n;
if ((i == 8) || (i == 12) || (i == 16) || (i == 20))
guid += "-";
}
return guid;
}
//执行上传
function doUpload() {
$('#file_upload').uploadify('upload', '*');
}
</script>
</head>
<body>
<form id="form1" runat="server" enctype="multipart/form-data">
<div id="fileQueue" class="fileQueue"></div>
<div>
<input type="file" name="file_upload" id="file_upload" />
<p>
<input type="button" class="shortbutton" id="btnUpload" onclick="doUpload()" value="上传" />
<input type="button" class="shortbutton" id="btnCancelUpload" onclick="$('#file_upload').uploadify('cancel')" value="取消" />
</p>
<div id="div_show_files"></div>
</div>
</form>
</body>
</html>
UploadHandler.ashx代码：
using System;
using System.Web;
using System.IO;public class UploadHandler : IHttpHandler {
public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "text/plain";
context.Request.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
context.Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
context.Response.Charset = "UTF-8";
if (context.Request.Files.Count > 0)
{
#region 获取上传路径
string uploadFolder = GetUploadFolder();
#endregion
if (System.IO.Directory.Exists(uploadFolder))
{//如果上传路径存在
HttpPostedFile file = context.Request.Files["Filedata"];
string filePath = Path.Combine(uploadFolder, file.FileName);
file.SaveAs(filePath);
context.Response.Write("0");
}
else
{
context.Response.Write("2");
}
}
}
public bool IsReusable {
get {
return false;
}
}
/// <summary>
/// 返回不带后缀的文件名
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public static string GetFirstFileName(string fileName)
{
return Path.GetFileNameWithoutExtension(fileName);
}
/// <summary>
/// 获取上传目录
/// </summary>
/// <returns></returns>
public static string GetUploadFolder()
{
string rootPath = HttpContext.Current.Server.MapPath("~");
return Path.Combine(rootPath, "test");
}
}
文件上传.NET默认有大小限制，像IIS限制的30M默认请求大小。如果不想修改IIS，又想突破这个大小的限制，比如上传1GB大小的文件。
