我有一个控制器操作,该操作在Firefox本地和生产环境中以及本地IE上均能正常运行,但在生产环境中却无法正常运行。这是我的控制器动作:
public ActionResult MNPurchase() { CalculationViewModel calculationViewModel = (CalculationViewModel)TempData["calculationViewModel"]; decimal OP = landTitleUnitOfWork.Sales.Find() .Where(x => x.Min >= calculationViewModel.SalesPrice) .FirstOrDefault() .OP; decimal MP = landTitleUnitOfWork.Sales.Find() .Where(x => x.Min >= calculationViewModel.MortgageAmount) .FirstOrDefault() .MP; calculationViewModel.LoanAmount = (OP + 100) - MP; calculationViewModel.LendersTitleInsurance = (calculationViewModel.LoanAmount + 850); return View(calculationViewModel); }
这是我在IE中获得的堆栈跟踪:
错误。处理您的请求时发生错误。System.Reflection.TargetException:非静态方法需要一个目标。在System.Reflection.RuntimeMethodInfo.CheckConsistency(Object target)在System.Reflection.RuntimeMethodInfo.InvokeArgumentsCheck(Object obj,BindingFlags invokeAttr,活页夹活页夹,Object []参数,CultureInfo文化)在System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr,活页夹活页夹,Object []参数,CultureInfo文化),位于System.Reflection.RuntimePropertyInfo.GetValue(Object obj,Object []索引),位于System.Data.Objects.ELinq.QueryParameterExpression.TryGetFieldOrPropertyValue(MemberExpression我,对象实例, System.Data.Objects.ELinq.QueryParameterExpression.TryEvaluatePath(Expression expression,1 forMergeOption) at System.Data.Objects.ObjectQuery1.GetResults(可空1 forMergeOption) at System.Data.Objects.ObjectQuery1.System.Collections.Generic.IEnumerable.GetEnumerator()在System.Linq.Enumerable.FirstOrDefault [TSource](IEnumerable的1 source) at System.Linq.Queryable.FirstOrDefault[TSource](IQueryable1源)在LandTitle.Controllers.HomeController.MNRefi()在lambda_method(封闭,ControllerBase ,Object []),位于System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext,IDictionary2 parameters) at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary2个参数)在Castle.Proxies.Invocations.ControllerActionInvoker_InvokeActionMethod.InvokeMethodOnTarget()在Castle.DynamicProxy.AbstractInvocation.Proceed()在Glimpse.Mvc3.Interceptor.InvokeActionMethodInterceptor.Intercept(IInvocation调用)在Castle.DynamicProxy.AbstractInvocationed() Castle.Proxies.AsyncControllerActionInvokerProxy.InvokeActionMethod(ControllerContext controllerContext,ActionDescriptor actionDescriptor,IDictionary``2个参数)at System.Web.Mvc.Async.AsyncControllerActionInvoker。<> c__DisplayClass37。<> c__DisplayClass39.b__33()at System.Web.Mvc.Async System.Web.Mvc.Async.AsyncControllerActionInvoker的<> c__DisplayClass4f.b__49().System.Web.Mvc.Async的<> c__DisplayClass37.b__36(IAsyncResult asyncResult)。AsyncControllerActionInvoker。<> c__DisplayClass25。<> c__DisplayClass2a.b__20()在System.Web.Mvc.Async.AsyncControllerActionInvoker。<> c__DisplayClass25.b__22(IAsyncResult asyncResult)
1 forMergeOption) at System.Data.Objects.ObjectQuery
1 source) at System.Linq.Queryable.FirstOrDefault[TSource](IQueryable
2 parameters) at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary
我认为当您在运行时为空引用的lambda中使用变量时,会发生此令人困惑的异常。在您的情况下,我将检查您的变量CalculationViewModel是否为空引用。
就像是:
public ActionResult MNPurchase() { CalculationViewModel calculationViewModel = (CalculationViewModel)TempData["calculationViewModel"]; if (calculationViewModel != null) { decimal OP = landTitleUnitOfWork.Sales.Find() .Where(x => x.Min >= calculationViewModel.SalesPrice) .FirstOrDefault() .OP; decimal MP = landTitleUnitOfWork.Sales.Find() .Where(x => x.Min >= calculationViewModel.MortgageAmount) .FirstOrDefault() .MP; calculationViewModel.LoanAmount = (OP + 100) - MP; calculationViewModel.LendersTitleInsurance = (calculationViewModel.LoanAmount + 850); return View(calculationViewModel); } else { // Do something else... } }