Question

可能重复：
Uploadify: show error message from HTTP response

我正在VS 2010上开发应用程序。在调试期间，当我上传图像文件时，我得到IO错误。这是图像

enter image description here

以下是我的剧本

<script type="text/javascript">
$(document).ready(function () {
    $('#file_upload').uploadify({
        'uploader': '/uploadify/uploadify.swf',
        'script': 'Home/Upload',
        'cancelImg': '/uploadify/cancel.png',
        'folder': 'Content/Images',
        'fileDesc': 'Image Files',
        'fileExt': '*.jpg;*.jpeg;*.gif;*.png',
        'auto': true
    });
});
</script>

以下是我的控制器代码

    public string Upload(HttpPostedFileBase fileData)
    {
        var fileName = this.Server.MapPath("~/Content/Images/" + System.IO.Path.GetFileName(fileData.FileName));
        fileData.SaveAs(fileName);
        return "ok";
    }

Answer 1

很难说你的代码可能会出现什么问题。你必须调试它。

这是一个完整的工作示例：

public class HomeController : Controller
{
    public ActionResult Index()
    {
        return View();
    }

    [HttpPost]
    public ActionResult Upload(HttpPostedFileBase fileData)
    {
        if (fileData != null && fileData.ContentLength > 0)
        {
            var fileName = Server.MapPath("~/Content/Images/" + Path.GetFileName(fileData.FileName));
            fileData.SaveAs(fileName);
            return Json(true);
        }
        return Json(false);
    }
}

查看（~/Views/Home/Index.cshtml）：

@{
    Layout = null;
}
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <link href="@Url.Content("~/uploadify/uploadify.css")" rel="stylesheet" type="text/css" />
</head>
<body>
    <div id="file_upload"></div>

    <script src="@Url.Content("~/Scripts/jquery-1.5.1.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/uploadify/swfobject.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/uploadify/jquery.uploadify.v2.1.4.js")" type="text/javascript"></script>
    <script type="text/javascript">
        $('#file_upload').uploadify({
            'uploader': '@Url.Content("~/uploadify/uploadify.swf")',
            'script': '@Url.Action("Upload", "Home")',
            'cancelImg': '@Url.Content("~/uploadify/cancel.png")',
            'folder': '@Url.Content("~/content/images")',
            'fileDesc': 'Image Files',
            'fileExt': '*.jpg;*.jpeg;*.gif;*.png',
            'auto': true
        });    
    </script>
</body>
</html>

确保服务器上存在要上载的~/Content/Images文件夹，否则控制器操作将引发异常。您还将注意到在我的示例中，如何通过url帮助程序引用所有URL，而不是硬编码它们。这样，无论是在IIS中的虚拟目录还是本地托管应用程序，都可以保证应用程序正常工作。

我使用了我下载的uploadify版本2.1.4，并将内容放在服务器上的~/uploadify文件夹中。

您应该注意的另一件事是可以发布到ASP.NET的文件的限制，可以使用httpRuntime element在web.config中配置。因此，如果您要上传大文件，请确保已将maxRequestLength和executionTimeout设置调整为您想要允许的所需最大值：

<system.web>
    <httpRuntime maxRequestLength="102400" executionTimeout="3600" />
</system.web>

Answer 2

it's help you.
var auth = "@(Request.Cookies[FormsAuthentication.FormsCookieName]==null ? string.Empty : Request.Cookies[FormsAuthentication.FormsCookieName].Value)";
    var ASPSESSID = "@(Session.SessionID)";

    $("#uploadifyLogo").uploadify({
        ...
        'scriptData': { 'ASPSESSID': ASPSESSID, 'AUTHID': auth  }
    });

在Global.asax中：

protected void Application_BeginRequest(object sender, EventArgs e)
    {
      /* we guess at this point session is not already retrieved by application so we recreate cookie with the session id... */
        try
        {
            string session_param_name = "ASPSESSID";
            string session_cookie_name = "ASP.NET_SessionId";

            if (HttpContext.Current.Request.Form[session_param_name] != null)
            {
                UpdateCookie(session_cookie_name, HttpContext.Current.Request.Form[session_param_name]);
            }
            else if (HttpContext.Current.Request.QueryString[session_param_name] != null)
            {
                UpdateCookie(session_cookie_name, HttpContext.Current.Request.QueryString[session_param_name]);
            }
        }
        catch
        {
        }

        try
        {
            string auth_param_name = "AUTHID";
            string auth_cookie_name = FormsAuthentication.FormsCookieName;

            if (HttpContext.Current.Request.Form[auth_param_name] != null)
            {
                UpdateCookie(auth_cookie_name, HttpContext.Current.Request.Form[auth_param_name]);
            }
            else if (HttpContext.Current.Request.QueryString[auth_param_name] != null)
            {
                UpdateCookie(auth_cookie_name, HttpContext.Current.Request.QueryString[auth_param_name]);
            }

        }
        catch
        {
        }
    }

    private void UpdateCookie(string cookie_name, string cookie_value)
    {
        HttpCookie cookie = HttpContext.Current.Request.Cookies.Get(cookie_name);
        if (null == cookie)
        {
            cookie = new HttpCookie(cookie_name);
        }
        cookie.Value = cookie_value;
        HttpContext.Current.Request.Cookies.Set(cookie);
    }

在Asp.net MVC应用程序上使用uploadify时出现HTTP错误

2 个答案: