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我最近一直在使用带有 StructureMap 的新 MVC 框架,并且总体上取得了不错的效果,但是,我一直遇到一个非常奇怪的错误,我无法理解或想出如何解决。
这是我的架构:
public class Repo : IRepository
{
public Repo(DBContext db)
{
.....
}
}
public class Service : IService
{
public Service(IRepository repo)
{
.....
}
}
public class ControllerOne : Controller
{
public ControllerOne(IService service)
{
.....
}
}
public class ControllerTwo : Controller
{
public ControllerTwo(IService service)
{
.....
}
}
03/20/2009 01:40:32 12: controller=Timesheet,date=2001-05-06,Action=WeekEnding /beta/Timesheet/2001-05-06?_dc=1237513232397
03/20/2009 01:40:32 10: controller=Timesheet,date=2001-05-06,Action=WeekEnding /beta/Timesheet/2001-05-06?_dc=1237513232449
03/20/2009 01:40:32 10: There is already an open DataReader associated with this Command which must be closed first. System.InvalidOperationException[br] at System.Data.SqlClient.SqlInternalConnectionTds.ValidateConnectionForExecute(SqlCommand command)
at System.Data.SqlClient.SqlConnection.ValidateConnectionForExecute(String method, SqlCommand command)
at System.Data.SqlClient.SqlCommand.ValidateCommand(String method, Boolean async)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
at System.Data.Common.DbCommand.ExecuteReader()
at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult)
at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries)
at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
at System.Data.Linq.DataQuery`1.System.Linq.IQueryProvider.Execute[S](Expression expression)
at System.Linq.Queryable.Sum[TSource](IQueryable`1 source, Expression`1 selector)
at HCD.Intranet.Core.Data.Linq.LinqEmployeeRepository.CalculateHolidaysRemaining(Employee employee, DateTime weekEnding, Int32 nonProjectId)
at HCD.Intranet.Core.Services.Impl.EmployeeService.CalculateHolidaysRemaining(Employee employee, DateTime weekEnding)
at HCD.Intranet.Core.Models.Timesheet.CalculateHolidaysRemaining()
at HCD.Intranet.Core.Models.Json.TimesheetJsonConverter.WriteTimesheet(JsonWriter writer, Timesheet timesheet)
at HCD.Intranet.Core.Models.Json.TimesheetJsonConverter.WriteJson(JsonWriter writer, Object value)
at Newtonsoft.Json.JsonSerializer.SerializeValue(JsonWriter writer, Object value, JsonConverter memberConverter)
at Newtonsoft.Json.JsonSerializer.WriteMemberInfoProperty(JsonWriter writer, Object value, JsonMemberMapping memberMapping)
at Newtonsoft.Json.JsonSerializer.SerializeObject(JsonWriter writer, Object value)
at Newtonsoft.Json.JsonSerializer.SerializeValue(JsonWriter writer, Object value, JsonConverter memberConverter)
at Newtonsoft.Json.JsonSerializer.Serialize(JsonWriter jsonWriter, Object value)
at HCD.Intranet.Core.Web.Mvc.NewtonsoftJsonResult.ExecuteResult(ControllerContext context)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<InvokeActionResultWithFilters>b__e()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<>c__DisplayClass13.<InvokeActionResultWithFilters>b__10()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<>c__DisplayClass13.<InvokeActionResultWithFilters>b__10()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
03/20/2009 01:40:32 12: Invalid attempt to call Read when reader is closed. System.InvalidOperationException[br] at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult)
at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries)
at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
at System.Data.Linq.DataQuery`1.System.Linq.IQueryProvider.Execute[S](Expression expression)
at System.Linq.Queryable.Sum[TSource](IQueryable`1 source, Expression`1 selector)
at HCD.Intranet.Core.Data.Linq.LinqEmployeeRepository.CalculateHolidaysRemaining(Employee employee, DateTime weekEnding, Int32 nonProjectId)
at HCD.Intranet.Core.Services.Impl.EmployeeService.CalculateHolidaysRemaining(Employee employee, DateTime weekEnding)
at HCD.Intranet.Core.Models.Timesheet.CalculateHolidaysRemaining()
at HCD.Intranet.Core.Models.Json.TimesheetJsonConverter.WriteTimesheet(JsonWriter writer, Timesheet timesheet)
at HCD.Intranet.Core.Models.Json.TimesheetJsonConverter.WriteJson(JsonWriter writer, Object value)
at Newtonsoft.Json.JsonSerializer.SerializeValue(JsonWriter writer, Object value, JsonConverter memberConverter)
at Newtonsoft.Json.JsonSerializer.WriteMemberInfoProperty(JsonWriter writer, Object value, JsonMemberMapping memberMapping)
at Newtonsoft.Json.JsonSerializer.SerializeObject(JsonWriter writer, Object value)
at Newtonsoft.Json.JsonSerializer.SerializeValue(JsonWriter writer, Object value, JsonConverter memberConverter)
at Newtonsoft.Json.JsonSerializer.Serialize(JsonWriter jsonWriter, Object value)
at HCD.Intranet.Core.Web.Mvc.NewtonsoftJsonResult.ExecuteResult(ControllerContext context)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<InvokeActionResultWithFilters>b__e()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<>c__DisplayClass13.<InvokeActionResultWithFilters>b__10()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<>c__DisplayClass13.<InvokeActionResultWithFilters>b__10()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
03/20/2009 01:41:58 12: controller=Timesheet,month=6,year=2001,Action=Calendar /beta/Timesheet/Calendar/6/2001?_dc=1237513318470
03/20/2009 01:41:59 10: controller=Timesheet,date=2001-06-03,Action=WeekEnding /beta/Timesheet/2001-06-03?_dc=1237513318509
03/20/2009 01:41:59 12: The null value cannot be assigned to a member with type System.Int32 which is a non-nullable value type. System.InvalidOperationException[br] at Read_TimesheetEntry(ObjectMaterializer`1 )
at System.Data.Linq.SqlClient.ObjectReaderCompiler.ObjectReader`2.MoveNext()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at HCD.Intranet.Core.Data.Linq.LinqTimesheetRepository.GetEntries(Int32 timesheetHeaderId)
at HCD.Intranet.Core.Services.Impl.TimesheetService.GetEntries(Int32 timesheetHeaderId)
at HCD.Intranet.Core.Models.Timesheet.get_InnerEntries()
at HCD.Intranet.Core.Models.TimeMap..ctor(Timesheet timesheet)
at HCD.Intranet.Core.Models.Json.TimesheetCalendarJsonConverter.WriteTimesheet(JsonWriter writer, Timesheet[] timesheets)
at HCD.Intranet.Core.Models.Json.TimesheetCalendarJsonConverter.WriteJson(JsonWriter writer, Object value)
at Newtonsoft.Json.JsonSerializer.SerializeValue(JsonWriter writer, Object value, JsonConverter memberConverter)
at Newtonsoft.Json.JsonSerializer.Serialize(JsonWriter jsonWriter, Object value)
at HCD.Intranet.Core.Web.Mvc.NewtonsoftJsonResult.ExecuteResult(ControllerContext context)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<InvokeActionResultWithFilters>b__e()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<>c__DisplayClass13.<InvokeActionResultWithFilters>b__10()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<>c__DisplayClass13.<InvokeActionResultWithFilters>b__10()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
03/20/2009 01:41:59 12: controller=Timesheet,date=2001-06-03,Action=WeekEnding /beta/Timesheet/2001-06-03?_dc=1237513318545
03/20/2009 01:41:59 12: There is already an open DataReader associated with this Command which must be closed first. System.InvalidOperationException[br] at System.Data.SqlClient.SqlInternalConnectionTds.ValidateConnectionForExecute(SqlCommand command)
at System.Data.SqlClient.SqlConnection.ValidateConnectionForExecute(String method, SqlCommand command)
at System.Data.SqlClient.SqlCommand.ValidateCommand(String method, Boolean async)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
at System.Data.Common.DbCommand.ExecuteReader()
at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult)
at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries)
at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
at System.Data.Linq.DataQuery`1.System.Linq.IQueryProvider.Execute[S](Expression expression)
at System.Linq.Queryable.Sum[TSource](IQueryable`1 source, Expression`1 selector)
at HCD.Intranet.Core.Data.Linq.LinqEmployeeRepository.CalculateHolidaysRemaining(Employee employee, DateTime weekEnding, Int32 nonProjectId)
at HCD.Intranet.Core.Services.Impl.EmployeeService.CalculateHolidaysRemaining(Employee employee, DateTime weekEnding)
at HCD.Intranet.Core.Models.Timesheet.CalculateHolidaysRemaining()
at HCD.Intranet.Core.Models.Json.TimesheetJsonConverter.WriteTimesheet(JsonWriter writer, Timesheet timesheet)
at HCD.Intranet.Core.Models.Json.TimesheetJsonConverter.WriteJson(JsonWriter writer, Object value)
at Newtonsoft.Json.JsonSerializer.SerializeValue(JsonWriter writer, Object value, JsonConverter memberConverter)
at Newtonsoft.Json.JsonSerializer.WriteMemberInfoProperty(JsonWriter writer, Object value, JsonMemberMapping memberMapping)
at Newtonsoft.Json.JsonSerializer.SerializeObject(JsonWriter writer, Object value)
at Newtonsoft.Json.JsonSerializer.SerializeValue(JsonWriter writer, Object value, JsonConverter memberConverter)
at Newtonsoft.Json.JsonSerializer.Serialize(JsonWriter jsonWriter, Object value)
at HCD.Intranet.Core.Web.Mvc.NewtonsoftJsonResult.ExecuteResult(ControllerContext context)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<InvokeActionResultWithFilters>b__e()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<>c__DisplayClass13.<InvokeActionResultWithFilters>b__10()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<>c__DisplayClass13.<InvokeActionResultWithFilters>b__10()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
03/20/2009 01:41:59 10: Invalid attempt to call Read when reader is closed. System.InvalidOperationException[br] at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult)
at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries)
at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
at System.Data.Linq.DataQuery`1.System.Linq.IQueryProvider.Execute[S](Expression expression)
at System.Linq.Queryable.Sum[TSource](IQueryable`1 source, Expression`1 selector)
at HCD.Intranet.Core.Data.Linq.LinqEmployeeRepository.CalculateHolidaysRemaining(Employee employee, DateTime weekEnding, Int32 nonProjectId)
at HCD.Intranet.Core.Services.Impl.EmployeeService.CalculateHolidaysRemaining(Employee employee, DateTime weekEnding)
at HCD.Intranet.Core.Models.Timesheet.CalculateHolidaysRemaining()
at HCD.Intranet.Core.Models.Json.TimesheetJsonConverter.WriteTimesheet(JsonWriter writer, Timesheet timesheet)
at HCD.Intranet.Core.Models.Json.TimesheetJsonConverter.WriteJson(JsonWriter writer, Object value)
at Newtonsoft.Json.JsonSerializer.SerializeValue(JsonWriter writer, Object value, JsonConverter memberConverter)
at Newtonsoft.Json.JsonSerializer.WriteMemberInfoProperty(JsonWriter writer, Object value, JsonMemberMapping memberMapping)
at Newtonsoft.Json.JsonSerializer.SerializeObject(JsonWriter writer, Object value)
at Newtonsoft.Json.JsonSerializer.SerializeValue(JsonWriter writer, Object value, JsonConverter memberConverter)
at Newtonsoft.Json.JsonSerializer.Serialize(JsonWriter jsonWriter, Object value)
at HCD.Intranet.Core.Web.Mvc.NewtonsoftJsonResult.ExecuteResult(ControllerContext context)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<InvokeActionResultWithFilters>b__e()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<>c__DisplayClass13.<InvokeActionResultWithFilters>b__10()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass11.<>c__DisplayClass13.<InvokeActionResultWithFilters>b__10()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
最佳答案
我正在与 Jeremy Miller 讨论这个问题,您不想使用 SM 管理数据库上下文的生命周期 - 让 repo 根据需要进行实例化。这给您将如何进行对象更新/持久性带来了问题(如果您依赖于一个上下文为多个请求保持事件状态),但是对于 Web 应用程序不依赖它是值得的。
出于这样的原因,我不得不从店面中删除数据库上下文管理的东西——我遇到了内存泄漏。我不会说这是 SM 的错——但总的来说,只是让 repo 打开一个新的上下文。
关于asp.net-mvc - StructureMap/ASP.MVC/Visual Studio/LinqToSql 的奇怪行为,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/650059/
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