本来想做一套上传公用的组建的，里面包含文件转码等功能，看来这些都只能后来一步一步加上了，先写下来。。。
1，引入脚本等
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<title>Index</title>
<link href="/uploadify/uploadify.css" rel="stylesheet" />
</head>
<body>
<input type="file" name="upload" id="upload" />
</body>
</html>
<script src="/Scripts/jquery-1.11.1.min.js"></script>
<script src="/uploadify/jquery.uploadify.min.js"></script>
<script>
$(function () {
$('#upload').uploadify({
'formData': { 'folder': 'd:\' },
'buttonText': '选择文件',
'buttonClass': 'browser',
'removeCompleted': false,
'swf': '/uploadify/uploadify.swf',
'uploader': '/FileUp/Upload',
'fileSizeLimit':'500MB',
'onError': function (event, id, fileObj, errorObj) {
if (errorObj.type === "File Size") {
alert('超过文件上传大小限制（2M）！');
return;
}
alert(errorObj.type + ', Error: ' + errorObj.info);
},
});
});
</script>
2，后台上传代码
public class FileUpController : Controller
{
public ActionResult Index()
{
return View();
}
public ContentResult Upload(HttpPostedFileBase fileData, string folder)
{
string filename = "";
if (null != fileData)
{
var length = fileData.ContentLength;
try
{
filename = Path.GetFileName(fileData.FileName); //获得文件名
saveFile(fileData, folder, filename);
}
catch (Exception ex)
{
filename = ex.ToString();
}
}
return Content(filename);
}
[NonAction]
private bool saveFile(HttpPostedFileBase postedFile, string filepath, string saveName)
{
bool result = false;
if (!Directory.Exists(filepath))
{
Directory.CreateDirectory(filepath);
}
try
{
postedFile.SaveAs(Path.Combine(filepath, saveName));
result = true;
}
catch (Exception e)
{
throw new ApplicationException(e.Message);
}
return result;
}
}
3，设置web.config(在system.web节点中)
<httpRuntime requestLengthDiskThreshold="256" maxRequestLength="2097151"/> //假如超过256kb文件，其将缓存到硬盘