日志信息：
2017-04-05 16:41:03,389 [14] ERROR - ServiceInvokeLogout - ctx:null,service:null,serviceName:service500,pageId:MainPageId,layoutId:,methodName:TimerElapsed:[{"postDatas":null,"isConnectInternet":false,"ClientConfigInfo":""},null],sessionInfo:[SessionId:cc6621b9-2f16-4fb2-b823-3bf9b8a0c08c,UserName:,IP:10.2.202.30(MAC:64:00:6A:8B:C2:0C)>GATE:127.0.0.1,MachineName:user-PC]
System.Exception: ServiceInvokeLogout
2017-04-05 16:42:12,998 [12] ERROR - BOS - FormId:PABR_IEM_IM_Feeding,EntryBarItemClick:["FENTITY","tbExport",[{"FENTITY":{"fieldKey":"FORDER","row":0,"selRows":"0","isClientNewRow":false,"clientNewRows":""}}]]
System.Reflection.TargetInvocationException: 调用的目标发生了异常。 ---> System.NullReferenceException: 未将对象引用设置到对象的实例。
在 Kingdee.BOS.Business.Bill.Service.FieldTypeAnalysis.BsProFieldAnalyst.getFieldValue(BasePropertyField field) 位置 d:\k3cloudbuild\BOS_V6_PT\BOS\Business\Src\Kingdee.BOS.Business.Bill\Service\FieldTypeAnalysis\BsProFieldAnalyst.cs:行号 17
在 Kingdee.BOS.Business.Bill.Operation.EntityExport.ExportEntityData(ExcelOperation helper, List`1 headers, List`1 dataSource, String entityKey, List`1 result) 位置 d:\k3cloudbuild\BOS_V6_PT\BOS\Business\Src\Kingdee.BOS.Business.Bill\Operation\EntityExport.cs:行号 276
在 Kingdee.BOS.Business.Bill.Operation.EntityExport.ReadyToExport(BeforeEntityExportArgs e) 位置 d:\k3cloudbuild\BOS_V6_PT\BOS\Business\Src\Kingdee.BOS.Business.Bill\Operation\EntityExport.cs:行号 152
在 Kingdee.BOS.Business.Bill.Operation.EntityExport.ExportDataFromDynamicForm() 位置 d:\k3cloudbuild\BOS_V6_PT\BOS\Business\Src\Kingdee.BOS.Business.Bill\Operation\EntityExport.cs:行号 112
在 Kingdee.BOS.Business.Bill.Operation.EntityExport.ExecuteOperation() 位置 d:\k3cloudbuild\BOS_V6_PT\BOS\Business\Src\Kingdee.BOS.Business.Bill\Operation\EntityExport.cs:行号 58
在 Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormOperation.Operation(CallBackWfAfterOperation callbackwf, IOperationResult result) 位置 d:\k3cloudbuild\BOS_V6_PT\BOS\Common\Src\Kingdee.BOS.Core\DynamicForm\Operation\AbstractDynamicFormOperation.cs:行号 373
在 Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormOperation.Execute(InvokeFormOperation4WfParam param, CallBackWfAfterOperation callbackwf) 位置 d:\k3cloudbuild\BOS_V6_PT\BOS\Common\Src\Kingdee.BOS.Core\DynamicForm\Operation\AbstractDynamicFormOperation.cs:行号 198
在 Kingdee.BOS.Web.DynamicForm.AbstractDynamicWebFormView.InvokeFormOperation(String operationNumber)
在 Kingdee.BOS.Business.DynamicForm.BusinessService.ExcuteOperation.DoAction(FormBusinessServiceArgs e) 位置 d:\k3cloudbuild\BOS_V6_PT\BOS\Business\Src\Kingdee.BOS.Business.DynamicForm\BusinessService\ExcuteOperation.cs:行号 51
在 Kingdee.BOS.Core.DynamicForm.FormBusinessServiceUtil.InvokeServices(IDynamicFormView view, Object source, IEnumerable`1 services, Int32 actionType, String activeEntity, DynamicObject activeRow, Int32 rowIndex) 位置 d:\k3cloudbuild\BOS_V6_PT\BOS\Common\Src\Kingdee.BOS.Core\DynamicForm\FormBusinessServiceUtil.cs:行号 207
在 Kingdee.BOS.Web.DynamicForm.BusinessServiceCaller.InvokeFormBusiness(IDynamicFormView view, Object source, List`1 formBusinessServices, Int32 actionType, String entityKey, Int32 row)
在 Kingdee.BOS.Web.DynamicForm.DynamicWebFormView.BarItemClick(String parentKey, String barItemKey, BarDataManager bar, Int32 bartype)
在 Kingdee.BOS.Web.DynamicForm.DynamicWebFormView.EntryBarItemClick(String entryKey, String barItemKey)
在 Kingdee.BOS.Web.DynamicForm.DynamicWebFormController.EntryBarItemClick(String entryKey, String itemKey, JSONArray postDatas)
--- 内部异常堆栈跟踪的结尾 ---
在 System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
在 System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
在 System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
在 System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters)
在 Kingdee.BOS.ServiceFacade.ServicesStub.DynamicForm.DynamicFormService.Call(String serviceName, String pageId, String layoutId, String methodName, IList pparams, JavaScriptSerializer js) 位置 d:\k3cloudbuild\BOS_V6_PT\BOS\ServiceFacade\Src\Kingdee.BOS.ServiceFacade.ServicesStub\DynamicForm\DynamicFormService.cs:行号 280
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