unit WebModuleU; interface uses System.SysUtils, System.Classes, MVCFramework, Web.HTTPApp, System.NetEncoding; type TMyWebModule = class(TWebModule) procedure WebModuleCreate(Sender: TObject); procedure WebModuleDestroy(Sender: TObject); private FMVC: TMVCEngine; public { Public declarations } end; var WebModuleClass: TComponentClass = TMyWebModule; implementation {$R *.dfm} uses MyControllerU, MVCFramework.Commons, System.Rtti; procedure TMyWebModule.WebModuleCreate(Sender: TObject); var lExceptionHandler: TMVCExceptionHandlerProc; begin lExceptionHandler := procedure( E: Exception; SelectedController: TMVCController; WebContext: TWebContext; var ExceptionHandled: Boolean) var lColor: string; begin if E is EMyException then begin case EMyException(E).Severity of Fatal, Error: lColor := 'red'; Warning: lColor := 'yellow'; Information: lColor := 'blue'; else lColor := 'black'; end; WebContext.Response.ContentType := TMVCMediaType.TEXT_HTML; WebContext.Response.Content := '

Error occurred

' + Format('

', [lColor]) + TNetEncoding.HTML.Encode (EMyException(E).ToString) + '

' + '

your truly custom exception handler...

' + ''; ExceptionHandled := True; end else if E is EMVCException then begin WebContext.Response.ContentType := TMVCMediaType.TEXT_HTML; WebContext.Response.Content := '

Error occurred

' + Format('

', [lColor]) + TNetEncoding.HTML.Encode (E.Message) + '

' + '

your truly custom exception handler...

' + ''; ExceptionHandled := True; end; end; FMVC := TMVCEngine.Create(Self, procedure(Config: TMVCConfig) begin // enable static files Config[TMVCConfigKey.DocumentRoot] := ExtractFilePath(GetModuleName(HInstance)) + '\www'; // session timeout (0 means session cookie) Config[TMVCConfigKey.SessionTimeout] := '0'; // default content-type Config[TMVCConfigKey.DefaultContentType] := TMVCConstants.DEFAULT_CONTENT_TYPE; // default content charset Config[TMVCConfigKey.DefaultContentCharset] := TMVCConstants.DEFAULT_CONTENT_CHARSET; // unhandled actions are permitted? Config[TMVCConfigKey.AllowUnhandledAction] := 'false'; // default view file extension Config[TMVCConfigKey.DefaultViewFileExtension] := 'html'; // view path Config[TMVCConfigKey.ViewPath] := 'templates'; // Enable Server Signature in response Config[TMVCConfigKey.ExposeServerSignature] := 'true'; // Define a default URL for requests that don't map to a route or a file (useful for client side web app) Config[TMVCConfigKey.FallbackResource] := 'index.html'; end); FMVC.AddController(TMyController); FMVC.SetExceptionHandler(lExceptionHandler); end; procedure TMyWebModule.WebModuleDestroy(Sender: TObject); begin FMVC.Free; end; end.