這是我的情況，我寫了一個wcf，它和果園完美地合作。 我要去，所以我加ServiceAdapter 和ClientServiceLocator到我的項目來處理事件的消息，如警告和例外：在果園裏處理WCF服務和與果園通知結合
ServiceAdapter：
public class ServiceAdapter<TService>
where TService : class, IContract
{
public TResult Execute<TResult>(Func<TService, TResult> command)
where TResult : IDtoResponseEnvelop
{
try
{
var dispatcher = ClientServiceLocator.Instance().CommandDispatcher;
var result = DispatchCommand(() => dispatcher.ExecuteCommand(command));
if (result.Response.HasWarning)
{
ClientServiceLocator.Instance()
.WarningManager
.HandleBusinessWarning(result.Response.BusinessWarnings);
}
if (result.Response.HasException)
{
ClientServiceLocator.Instance()
.ExceptionManager
.HandleBusinessException(result.Response.BusinessException);
}
return result;
}
finally
{
}
}
private static TResult DispatchCommand<TResult>(Func<TResult> dispatcherCommand)
where TResult : IDtoResponseEnvelop
{
var asynchResult = dispatcherCommand.BeginInvoke(null, null);
while (!asynchResult.IsCompleted)
{
}
return dispatcherCommand.EndInvoke(asynchResult);
}
}
ClientServiceLocator：
public class ClientServiceLocator
{
static readonly Object LocatorLock = new object();
private static ClientServiceLocator InternalInstance;
private ClientServiceLocator() { }
public static ClientServiceLocator Instance()
{
if (InternalInstance == null)
{
lock (LocatorLock)
{
// in case of a race scenario ... check again
if (InternalInstance == null)
{
InternalInstance = new ClientServiceLocator();
}
}
}
return InternalInstance;
}
#region IClientServices Members
public IBusinessExceptionManager ExceptionManager { get; set; }
public IBusinessWarningManager WarningManager { get; set; }
public ICommandDispatcher CommandDispatcher { get; set; }
#endregion
}
BusinessExceptionManager：
class BusinessExceptionManager
: IBusinessExceptionManager, IDependency
{
private Localizer T { get; set; }
private readonly INotifier _notifier;
public BusinessExceptionManager(INotifier notifier)
{
_notifier = notifier;
T = NullLocalizer.Instance;
}
public void HandleBusinessException(BusinessExceptionDto exceptionDto)
{
_notifier.Add(NotifyType.Error, T(exceptionDto.Message));
}
}
BusinessWarningManager：
class BusinessWarningManager
: IBusinessWarningManager, IDependency
{
private Localizer T { get; set; }
private readonly INotifier _notifier;
public BusinessWarningManager(INotifier notifier)
{
_notifier = notifier;
T = NullLocalizer.Instance;
}
public void HandleBusinessWarning(IEnumerable<BusinessWarning> warnings)
{
var message = string.Join(Environment.NewLine, warnings.Select(w => w.Message));
_notifier.Add(NotifyType.Warning, T(message));
}
}
這裏是控制器：
public class SectorsAdminController : Controller
{
private dynamic Shape { get; set; }
private Localizer T { get; set; }
private readonly INotifier _notifier;
private readonly ISiteService _siteService;
private ServiceAdapter<ISectorService> _sectorServiceAdapter;
public SectorsAdminController(ISiteService siteService, INotifier notifier, IShapeFactory shapeFactory)
{
Shape = shapeFactory;
T = NullLocalizer.Instance;
_notifier = notifier;
_siteService = siteService;
_sectorServiceAdapter = new ServiceAdapter<ISectorService>();
}
public ActionResult Index()
{
var model = Shape.Sectors(Sectors: _sectorServiceAdapter.Execute(s => s.FindAll()).Sectors);
return View((object)model);
}
}
以下是錯誤：
糟糕。出錯了...抱歉
發生未處理的異常並且請求被終止。請刷新頁面。如果錯誤仍然存在，請返回
未將對象引用設置爲對象的實例。
System.NullReferenceException：未將對象引用設置爲對象的實例。服務器堆棧跟蹤：at SAS.Admin.Services.ServiceAdapter 1.<>c__DisplayClass3 1.b__0（）at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage（IntPtr md，Object [] args，Object server，Object [] & outArgs）at System .Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage（IMessage msg，IMessageSink replySink）在System.Runtime.Remoting的System.Runtime.Remoting.Proxies.RealProxy.EndInvokeHelper（消息reqMsg，布爾bProxyCase）的[0]處重新執行異常。 Proxies.RemotingProxy.Invoke（Object NotUsed，MessageData & msgData）at System.Func 1.EndInvoke(IAsyncResult result) at SAS.Admin.Services.ServiceAdapter 1.在System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod（ControllerContext controllerContext，ActionDescriptor actionDescriptor，IDictionary 012）執行[TResult]（函數2 command) at SAS.Admin.Controllers.SectorsAdminController.Index() at lambda_method(Closure , ControllerBase , Object[]) at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary）2 .CallEndDelegate（IAsyncResult asyncResult）在System.Web.Mvc.Async.AsyncControllerActionInvo ker.AsyncInvocationWithFilters.b__3f（）在System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters。 <> c__DisplayClass48.b__41（）在System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters。 <> c__DisplayClass48.b__41（）