ASP.NET MVC下基于异常处理的完整解决方案总结_实用技巧_

 namespace Artech.Mvc.ExceptionHandling.Models { public class LoginInfo { [Display(Name ="User Name")] [Required(ErrorMessage = "User Name is manadatory!")] public string UserName { get; set; } [Display(Name = "Password")] [DataType(DataType.Password)] [Required(ErrorMessage = "Password is manadatory!")] public string Password { get; set; } } }

 public class AccountController BaseController { public AccountController() base("myPolicy") { } public ActionResult SignIn() { return View(new LoginInfo()); } [HttpPost] public ActionResult SignIn(LoginInfo loginInfo) { if (!ModelState.IsValid) { return this.View(new LoginInfo { UserName = loginInfo.UserName }); } if (loginInfo.UserName != "Foo") { throw new InvalidUserNameException(); } if (loginInfo.Password != "password") { throw new UserNamePasswordNotMatchException(); } ViewBag.Message = "Authentication Succeeds!"; return this.View(new LoginInfo { UserName = loginInfo.UserName }); } public ActionResult OnSignInError(string userName) { return this.View(new LoginInfo { UserName = userName }); } } 

 @model Artech.Mvc.ExceptionHandling.Models.LoginInfo @{ ViewBag.Title = "SignIn"; } @Html.ValidationSummary() @if (ViewBag.Messages != null) { @ViewBag.Messages } @using (Html.BeginForm()) { @Html.EditorForModel()  } 

 ...  ... 

 @{ Layout = null; } 
Sorry,the user name you specify does not exist!
 @{ Layout = null; } 
Sorry, The password does not match the given user name!

 using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using Artech.Mvc.ExceptionHandling.Configuration; using Microsoft.Practices.EnterpriseLibrary.Common.Configuration; using Microsoft.Practices.EnterpriseLibrary.ExceptionHandling; namespace Artech.Mvc.ExceptionHandling { public class ExceptionActionInvoker ControllerActionInvoker { protected ExceptionHandlingSettings ExceptionHandlingSettings{get; private set;} protected virtual Func GetErrorView { get; private set; } public ExceptionPolicyImpl ExceptionPolicy { get; private set; } public ExceptionActionInvoker(string exceptionPolicy,Func getErrorView) { this.ExceptionPolicy = EnterpriseLibraryContainer.Current.GetInstance(exceptionPolicy); this.GetErrorView = getErrorView; this.ExceptionHandlingSettings = ExceptionHandlingSettings.GetSection(); } public override bool InvokeAction(ControllerContext controllerContext, string handleErrorActionName) { ExceptionContext exceptionContext = controllerContext as ExceptionContext; if (null == exceptionContext) { throw new ArgumentException("The controllerContext must be ExceptionContext!", "controllerContext"); } try { exceptionContext.ExceptionHandled = true; if (this.ExceptionPolicy.HandleException(exceptionContext.Exception)) { HandleRethrownException(exceptionContext); } else { if (ExceptionHandlingContext.Current.Errors.Count == 0) { ExceptionHandlingContext.Current.Errors.Add(exceptionContext.Exception.Message); } ControllerDescriptor controllerDescriptor = this.GetControllerDescriptor(exceptionContext); ActionDescriptor handleErrorAction = FindAction(exceptionContext, controllerDescriptor, handleErrorActionName); if (null != handleErrorAction) { IDictionary parameters = GetParameterValues(controllerContext, handleErrorAction); exceptionContext.Result = this.InvokeActionMethod(exceptionContext, handleErrorAction, parameters); } else { HandleRethrownException(exceptionContext); } } return true; } catch (Exception ex) { exceptionContext.Exception = ex; HandleRethrownException(exceptionContext); return true; } } protected virtual void HandleRethrownException(ExceptionContext exceptionContext) { string errorViewName = this.GetErrorViewName(exceptionContext.Exception.GetType()); string controllerName = (string)exceptionContext.RouteData.GetRequiredString("controller"); string action = (string)exceptionContext.RouteData.GetRequiredString("action"); HandleErrorInfo handleErrorInfo = new HandleErrorInfo(exceptionContext.Exception, controllerName, action); exceptionContext.Result = this.GetErrorView(errorViewName, handleErrorInfo); } protected string GetErrorViewName(Type exceptionType) { ExceptionErrorViewElement element = ExceptionHandlingSettings.ExceptionErrorViews .Cast().FirstOrDefault(el=>el.ExceptionType == exceptionType); if(null != element) { return element.ErrorView; } if(null== element && null != exceptionType.BaseType!= null) { return GetErrorViewName(exceptionType.BaseType); } else { return "Error";
                
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