我有一个自定义ActionResult用于返回某些HTTP错误,如NotFoundResult和ForbiddenResult,它们都派生自ViewResult.
如果在操作过程中没有在数据库中找到实体,我会将它们用于404的短路操作.
在这些结果对象中,我将HTTP状态设置为适当的数字.当我这样做时,这些ViewResults引用不会呈现的视图.我必须将状态保留为200 OK才能呈现我的视图.
如何在ASP.NET MVC 2.0中设置适当的状态并呈现视图？
解决方法
I have a custom ActionResult for
returning certain HTTP Errors,like
NotFoundResult and ForbiddenResult,
they all derive from ViewResult.
请允许我建议您替代错误处理：
首先创建一个错误控制器和相应的视图：
public class ErrorController : Controller
{
public ActionResult General()
{
return View();
}
public ActionResult HttpError404()
{
return View();
}
public ActionResult HttpError500()
{
return View();
}
}
在Global.asax中定义Application_Error方法：
protected void Application_Error(object sender,EventArgs e)
{
var exception = Server.GetLastError();
// TODO: Log the exception with your favorite logging framework
Response.Clear();
var httpException = exception as HttpException;
var routeData = new RouteData();
// Take the ErrorController
routeData.Values.Add("controller","error");
if (httpException == null)
{
// Use the General action for any unhandled error
routeData.Values.Add("action","general");
}
else
{
switch (httpException.GetHttpCode())
{
case 404:
routeData.Values.Add("action","httpError404");
break;
case 500:
routeData.Values.Add("action","httpError500");
break;
default:
routeData.Values.Add("action","general");
break;
}
}
// Add the exception to route data so that the error controller
// could use it with RouteData.Values["error"]
routeData.Values.Add("error",exception);
Server.ClearError();
IController errorController = new ErrorController();
errorController.Execute(new RequestContext(new HttpContextWrapper(Context),routeData));
}
最后抛出适当的例外：
public class HomeController: Controller
{
public ActionResult Index(int id)
{
var model = _repository.GetModel(id);
if (model == null)
{
throw new HttpException(404,"Model not found with id = " + id);
}
return View(model);
}
}
