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这个问题是关于在 ASP.Net MVC 应用程序的生命周期中创建 Raven 文档存储的单个实例，然后为每个请求使用新的 IDocumentSession 来为客户端提供服务。我相信已遵循http://ravendb.net/kb/3/using-ravendb-in-an-asp-net-mvc-website中描述的推荐程序，一旦部署站点，我仍然会遇到错误。

我的代码如下所示。HepApp 类包含文档存储并由应用程序引用：

internal class HepApp
{
    internal static readonly Object padlock = new object();
    private static IDocumentStore _DB;

    internal IDocumentStore DB
    {
        get
        {
            if (_DB == null)
            {
                lock (padlock)
                {
                    if (_DB == null)
                    {
                        _DB = new EmbeddableDocumentStore().Initialize();
                        return _DB;
                    }
                }                    
            }
            return _DB;
        }
    }

    public IDocumentSession GetSession()
    {
        return DB.OpenSession();
    }
}

我的 MVC 控制器：

public class HomeController : Controller
{
    IDocumentSession RavenSession;

    public HomeController()
    {
    }

    protected void Init()
    {
        RavenSession = MvcApplication.HepApp.GetSession();
    }

    protected override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        base.OnActionExecuting(filterContext);
        Init();
    }

应用程序类 Global.asax 绑定到：

public class MvcApplication : System.Web.HttpApplication
{
    static readonly Object padlock = new object();
    static HepApp _HepApp;

    internal static HepApp HepApp
    {
        get
        {
            if(_HepApp == null)
            {
                lock(padlock)
                {
                    if(_HepApp == null)
                    {
                        _HepApp = new HepApp();
                    }
                }
            }

            return _HepApp;
        }
    }

当应用程序启动时，文档存储应该被初始化并在应用程序的剩余生命周期中存在。对于每个请求，都会创建一个新的 Session 对象。至少，是这样的想法。相反，在 OnActionExecuting 中发生空引用错误（尽管我怀疑 HomeController.Init 方法，但它没有出现在堆栈上）或 EmbeddableDocumentStore 对象被报告为已经处置。令人困惑的是，这些错误仅在应用程序运行一段时间后才会出现，这可能表明这是应用程序池回收问题

编辑：错误有所不同，但似乎都表明数据库存储的实例化存在问题：

[EsentFileAccessDeniedException：无法访问文件，文件已锁定或正在使用] [InvalidOperationException：无法写入位置：\192.168.0.100\localuser\x\App_Data/Raven。确保您对此路径具有读/写权限。]

System.InvalidOperationException：无法写入位置：\192.168.0.100\localuser\x\App_Data/Raven。确保您对此路径具有读/写权限。---> Microsoft.Isam.Esent.Interop.EsentFileAccessDeniedException：无法访问文件，文件在 Microsoft.Isam.Esent.Interop.Api.Check(Int32 err) 在 Microsoft.Isam.Esent.Interop 被锁定或正在使用。 Api.JetInit(JET_INSTANCE& 实例) 在 Raven.Storage.Esent.TransactionalStorage.Initialize(IUuidGenerator uuidGenerator, OrderedPartCollection1 documentCodecs) --- End of inner exception stack trace --- at Raven.Storage.Esent.TransactionalStorage.Initialize(IUuidGenerator uuidGenerator, OrderedPartCollection1 documentCodecs) 在 Raven.Database.DocumentDatabase..ctor(InMemoryRavenConfiguration 配置, TransportState transportState) 在 Raven.Client.Embedded.EmbeddableDocumentStore.InitializeInternal() 在 Raven.Client.Document.DocumentStore.Initialize() 在 HEPlaceHolder.HepApp.get_DB( ) 在 e:\projects\HEPlaceHolder\HEPlaceHolder\Logic\HepApp.cs:line 27 at HEPlaceHolder.Controllers.HomeController.OnActionExecuting(ActionExecutingContext filterContext) 在 e:\projects\HEPlaceHolder\HEPlaceHolder\Controllers\HomeController.cs:line 31 at System.Web.Mvc.Controller.System.Web.Mvc.IActionFilter.OnActionExecuting(ActionExecutingContext filterContext) 在 System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.InvokeActionMethodFilterAsynchronouslyRecursive(Int32 filterIndex) 在 System.Web.Mvc.Async。AsyncControllerActionInvoker.<>c__DisplayClass33.b__31(AsyncCallback asyncCallback, Object asyncState) 在 System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase1. 在 System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeActionMethodWithFilters(ControllerContext controllerContext, IList 1 filters, ActionDescriptor actionDescriptor, IDictionary2 parameters, AsyncCallback callback, Object state) 在 System.Web.Mvc.Async.AsyncControllerActionInvoker 开始（AsyncCallback 回调，对象状态，Int32 超时）。 <>c__DisplayClass21.b__19(AsyncCallback asyncCallback, Object asyncState) 在 System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase1.在 System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeAction(ControllerContext controllerContext, String actionName, AsyncCallback callback, Object state) 在 System.Web.Mvc.Controller.b__1c(AsyncCallback) 开始（AsyncCallback 回调，对象状态，Int32 超时） asyncCallback，对象 asyncState，ExecuteCoreState innerState）在 System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid 1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase1.Begin（AsyncCallback 回调，对象状态，Int32 超时）在 System.Web.Mvc.Controller.BeginExecuteCore（AsyncCallback 回调，对象状态）在 System.Web.Mvc.Controller.b__14(AsyncCallback asyncCallback, Object callbackState, Controller controller) 在 System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase1.在 System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) 在 System.Web.Mvc.Controller.System.Web.Mvc.Async 开始（AsyncCallback 回调，对象状态，Int32 超时）。 IAsyncController.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) at System.Web.Mvc.MvcHandler.b__4(AsyncCallback asyncCallback, Object asyncState, ProcessRequestState innerState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase1.在 System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback 回调, 对象状态) 在 System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContext httpContext, AsyncCallback 回调中的开始(AsyncCallback 回调, 对象状态, Int32 超时),对象状态）在 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData) 在 System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() 在System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

[ObjectDisposedException：文档存储已被释放，无法使用对象名称：'EmbeddableDocumentStore'。] Raven.Client.DocumentStoreBase.EnsureNotClosed() +82 System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback,对象状态，Int32 超时）+128

[NullReferenceException：对象引用未设置为对象的实例。] e:\projects\HEPlaceHolder\HEPlaceHolder\Controllers\HomeController.cs:31 System.Web.Mvc.Controller 中的 HEPlaceHolder.Controllers.HomeController.OnActionExecuting(ActionExecutingContext filterContext) .System.Web.Mvc.IActionFilter.OnActionExecuting(ActionExecutingContext filterContext) +10

System.InvalidOperationException：无法打开事务存储：\192.168.0.100\localuser\x\App_Data/Raven\Data ---> Microsoft.Isam.Esent.Interop.EsentTempPathInUseException：临时路径已被 Microsoft.Isam 的另一个数据库实例使用.Esent.Interop.Api.Check(Int32 err) 在 Microsoft.Isam.Esent.Interop.Api.JetInit(JET_INSTANCE& 实例) 在 Raven.Storage.Esent.TransactionalStorage.Initialize(IUuidGenerator uuidGenerator, OrderedPartCollection1 documentCodecs) --- End of inner exception stack trace --- at Raven.Storage.Esent.TransactionalStorage.Initialize(IUuidGenerator uuidGenerator, OrderedPartCollection1 documentCodecs) 在 Raven.Database.DocumentDatabase..ctor(InMemoryRavenConfiguration 配置, TransportState transportState) 在 Raven.Client.Embedded.EmbeddableDocumentStore.InitializeInternal() 在 Raven.Client.Document.DocumentStore.Initialize() 在 HEPlaceHolder.HepApp.get_DB( ) 在 e:\projects\HEPlaceHolder\HEPlaceHolder\Logic\HepApp.cs:line 27 at HEPlaceHolder.Controllers.HomeController.OnActionExecuting(ActionExecutingContext filterContext) 在 e:\projects\HEPlaceHolder\HEPlaceHolder\Controllers\HomeController.cs:line 31 at System.Web.Mvc.Controller.System.Web.Mvc.IActionFilter.OnActionExecuting(ActionExecutingContext filterContext) 在 System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.InvokeActionMethodFilterAsynchronouslyRecursive(Int32 filterIndex) 在 System.Web.Mvc.Async。AsyncControllerActionInvoker.<>c__DisplayClass33.b__31(AsyncCallback asyncCallback, Object asyncState) 在 System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase1. 在 System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeActionMethodWithFilters(ControllerContext controllerContext, IList 1 filters, ActionDescriptor actionDescriptor, IDictionary2 parameters, AsyncCallback callback, Object state) 在 System.Web.Mvc.Async.AsyncControllerActionInvoker 开始（AsyncCallback 回调，对象状态，Int32 超时）。 <>c__DisplayClass21.b__19(AsyncCallback asyncCallback, Object asyncState) 在 System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase1.在 System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeAction(ControllerContext controllerContext, String actionName, AsyncCallback callback, Object state) 在 System.Web.Mvc.Controller.b__1c(AsyncCallback) 开始（AsyncCallback 回调，对象状态，Int32 超时） asyncCallback，对象 asyncState，ExecuteCoreState innerState）在 System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid 1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase1.Begin（AsyncCallback 回调，对象状态，Int32 超时）在 System.Web.Mvc.Controller.BeginExecuteCore（AsyncCallback 回调，对象状态）在 System.Web.Mvc.Controller.b__14(AsyncCallback asyncCallback, Object callbackState, Controller controller) 在 System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase1.在 System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) 在 System.Web.Mvc.Controller.System.Web.Mvc.Async 开始（AsyncCallback 回调，对象状态，Int32 超时）。 IAsyncController.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) at System.Web.Mvc.MvcHandler.b__4(AsyncCallback asyncCallback, Object asyncState, ProcessRequestState innerState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase1.在 System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback 回调, 对象状态) 在 System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContext httpContext, AsyncCallback 回调中的开始(AsyncCallback 回调, 对象状态, Int32 超时),对象状态）在 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData) 在 System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() 在System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

编辑：每当 bin 文件夹使用经过调整的版本进行更新以调试问题时，该站点最初会正常运行，可能是因为应用程序已重置。

4

0 回答 0