游.程 2015-04-10 06:34 采纳率: 0%
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授权Ajax通话

So I have MVC5 project and I have some ajax call when clicking a button, the controller it called have custom attribute I made so the framework can redirect someone to login page similar to non-ajax [Authorize].

Custom Attribute:

public class AjaxAuthorizeAttribute : AuthorizeAttribute
{
    protected override void HandleUnauthorizedRequest(AuthorizationContext context)
    {
        if (context.HttpContext.Request.IsAjaxRequest()) {
            dynamic urlHelper = new UrlHelper(context.RequestContext);
            context.HttpContext.Response.StatusCode = 403;

            context.Result = new JsonResult {
                Data = new {
                    Error = "NotAuthorized",
                    LogOnUrl = urlHelper.Action("Registration", "Membership")
                },
                JsonRequestBehavior = JsonRequestBehavior.AllowGet
            };
        } else {
            base.HandleUnauthorizedRequest(context);
        }
    }
}

Controller :

[HttpPost()]
[AjaxAuthorize()]
public void Test()
{
       //do something
}

Javascript :

    //AJAX AUTHORIZE REDIRECT
    $(document).ajaxError(function (e, xhr) {
        if (xhr.status == 403) {
            var response = $.parseJSON(xhr.responseText);
            window.location = response.LogOnUrl;
        }
    });

it works fine in my localhost, however it doesn't work when I deployed it to my webserver. I did some checking and turned out the xhr.responseText in my jquery script have different result, here's the comparison :

localhost :

{"Error":"NotAuthorized","LogOnUrl":"/Membership/Registration"} //correct output

webserver :

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"/>
<title>403 - Forbidden: Access is denied.</title>
<style type="text/css">
<!--
body{margin:0;font-size:.7em;font-family:Verdana, Arial, Helvetica, sans-serif;background:#EEEEEE;}
fieldset{padding:0 15px 10px 15px;} 
h1{font-size:2.4em;margin:0;color:#FFF;}
h2{font-size:1.7em;margin:0;color:#CC0000;} 
h3{font-size:1.2em;margin:10px 0 0 0;color:#000000;} 
#header{width:96%;margin:0 0 0 0;padding:6px 2% 6px 2%;font-family:"trebuchet MS", Verdana, sans-serif;color:#FFF;
background-color:#555555;}
#content{margin:0 0 0 2%;position:relative;}
.content-container{background:#FFF;width:96%;margin-top:8px;padding:10px;position:relative;}
-->
</style>
</head>
<body>
<div id="header"><h1>Server Error</h1></div>
<div id="content">
 <div class="content-container"><fieldset>
  <h2>403 - Forbidden: Access is denied.</h2>
  <h3>You do not have permission to view this directory or page using the credentials that you supplied.</h3>
 </fieldset></div>
</div>
</body>
</html>

Any idea why this is happening?

  • 写回答

1条回答 默认 最新

  • 狐狸.fox 2015-04-10 07:28
    关注

    Method 1 (Preferred)

    You can set TrySkipIisCustomErrors to true for your Responses. Like this:

    protected override void HandleUnauthorizedRequest(AuthorizationContext context)
    {
        if (context.HttpContext.Request.IsAjaxRequest()) {
            dynamic urlHelper = new UrlHelper(context.RequestContext);
    
            context.HttpContext.Response.TrySkipIisCustomErrors= true;
            context.HttpContext.Response.StatusCode = 403;
    
            context.Result = new JsonResult {
                Data = new {
                    Error = "NotAuthorized",
                    LogOnUrl = urlHelper.Action("Registration", "Membership")
                },
                JsonRequestBehavior = JsonRequestBehavior.AllowGet
            };
        } else {
            base.HandleUnauthorizedRequest(context);
        }
    }
    

    Method 2 You can Stop Sending end HTTP Status Code 403 by removing this statement from HandleUnauthorizedRequest.

    context.HttpContext.Response.StatusCode = 403;
    

    This will tell your client and server this this request has succeeded. In that case your javascript code would be look something like this,

    $(document).ajaxSuccess(function (e, xhr) {
        var response = $.parseJSON(xhr.responseText);
        if (typeof(response.Error) !== 'undefined') {
            window.location = response.LogOnUrl;
        }
    });
    
    评论

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