16
这是一个奇怪的问题。我正在运行MVC 3，并有一个自定义操作结果，它包装异常并返回一条消息以及标准的HTTP错误。不能远程返回自定义HTTP错误详细信息
public class ExceptionResult : ActionResult
{
private readonly Exception _exception;
public ExceptionResult(Exception exception)
{
_exception = exception;
}
public override void ExecuteResult(ControllerContext context)
{
var response = context.HttpContext.Response;
response.ClearHeaders();
response.Cache.SetNoStore();
response.ContentType = ContentType.Json;
var baseEx = _exception as BaseException ?? new ServerException(_exception);
var result = baseEx.GetResult();
var json = result.ToJSON();
response.Write(json);
response.StatusCode = (int)result.Status.Code;
}
}
当我运行这个地方我得到正是我期望：
HTTP/1.1 400 Bad Request
Cache-Control: no-store
Content-Type: application/json; charset=utf-8
Server: Microsoft-IIS/7.5
X-AspNet-Version: 4.0.30319
Date: Thu, 01 Dec 2011 19:00:03 GMT
Content-Length: 81
{"error":"invalid_request","error_description":"Parameter grant_type is missing"}
但是，当我尝试从不同的机器连接，我得到了标准的IIS错误消息，而不是：
HTTP/1.1 400 Bad Request
Cache-Control: no-store
Content-Type: text/html
Server: Microsoft-IIS/7.5
X-AspNet-Version: 4.0.30319
Date: Thu, 01 Dec 2011 19:02:33 GMT
Content-Length: 11
Bad Request
UPDATE
必须有这样的我的http模块在IIS管道的某个地方吞咽响应并重写内容。我编写了一个模块来记录请求和响应，并且它完全返回了我期望的内容，但实际上它对浏览器的影响是错误的。
2011-12-02 15:39:00,518 - ======== Request ========
2011-12-02 15:39:00,518 - GET /oauth/2/token HTTP/1.1
2011-12-02 15:39:00,519 - Cache-Control: max-age=0
2011-12-02 15:39:00,519 - Connection: keep-alive
2011-12-02 15:39:00,519 - Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
2011-12-02 15:39:00,519 - Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
2011-12-02 15:39:00,519 - Accept-Encoding: gzip,deflate,sdch
2011-12-02 15:39:00,519 - Accept-Language: en-US,en;q=0.8
2011-12-02 15:39:00,519 - Host: micah-pc:8095
2011-12-02 15:39:00,519 - User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2
2011-12-02 15:39:00,519 - =========================
2011-12-02 15:39:00,519 - OAuth exception occurred.
BoomTown.OAuth.OAuthException: Parameter grant_type is missing
at BoomTown.OAuth.Request.TokenRequest.GetRequestValidator() in C:\code\BoomTown\Api\BoomTown.OAuth\Request\TokenRequest.cs:line 19
at BoomTown.OAuth.Request.OAuthRequestBase.Validate() in C:\code\BoomTown\Api\BoomTown.OAuth\Request\OAuthRequestBase.cs:line 33
at BoomTown.OAuth.Request.OAuthRequestBase..ctor(HttpRequestBase request, IOAuthServiceLocator serviceLocator) in C:\code\BoomTown\Api\BoomTown.OAuth\Request\OAuthRequestBase.cs:line 28
at BoomTown.OAuth.Request.TokenRequest..ctor(HttpRequestBase request, IOAuthServiceLocator serviceLocator) in C:\code\BoomTown\Api\BoomTown.OAuth\Request\TokenRequest.cs:line 13
at BoomTown.Api.Web.Controllers.OAuth.V2.OAuthController.Token() in C:\code\BoomTown\Api\BoomTown.Api.Web\Controllers\OAuth\V2\OAuthController.cs:line 26
2011-12-02 15:39:00,520 - ======= Response =======
2011-12-02 15:39:00,520 - HTTP/1.1 400 Bad Request
2011-12-02 15:39:00,520 - Cache-Control: no-store
2011-12-02 15:39:00,520 - X-AspNet-Version: 4.0.30319
2011-12-02 15:39:00,520 - Content-Type: application/json; charset=utf-8
2011-12-02 15:39:00,520 - {"error":"invalid_request","error_description":"Parameter grant_type is missing"}
SOLUTION
多亏了小侦探我能弄明白。我设置了IIS跟踪，证实了我的怀疑，它与customerrormodule有关，它拦截了我的请求并覆盖了我的错误消息。我一直揣着
<system.web>
<customErrors />
<system.web>
设置，但无济于事。我是在正确的轨道上，但因为它是IIS 7中我跑我需要改变正确的web.config部分，像这样：
<system.webServer>
<httpErrors errorMode="Detailed" />
</system.webServer>
现在我所有的自定义JSON消息来通过完美。非常感谢Jason Finneyfrock这个标签团队。
+1好问题，你确定你是返回结果或IIS拦截？我注意到Content-Type在远程响应上是不同的。 –