Existing Context

[gregoun]

Hi,

I tried to implement a web application with spring. I create a 3 parts application with View - Services - Persistance.

I specifie my service Object with spring for my .aspx pages.

I seems to be ok because when i test my application, i'm available to navigate into my web site.

My problem is than at a moment spring throw an exception

Existing context 'Spring.Context.Support.WebApplicationContext' already registered under name '/testsite'.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: Spring.Context.ApplicationContextException: Existing context 'Spring.Context.Support.WebApplicationContext' already registered under name '/testsite'.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[ApplicationContextException: Existing context 'Spring.Context.Support.WebApplicationContext' already registered under name '/testsite'.]
Spring.Web.Support.AbstractHandlerFactory.GetAppli cationContext(HttpContext context) +120
Spring.Web.Support.PageHandlerFactory.GetHandler(H ttpContext context, String requestType, String url, String path) +152
System.Web.HttpApplication.MapHttpHandler(HttpCont ext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) +401
System.Web.MapHandlerExecutionStep.System.Web.Http Application.IExecutionStep.Execute() +183
System.Web.HttpApplication.ExecuteStep(IExecutionS tep step, Boolean& completedSynchronously) +191



- I'm using framework aps.net 2.0.
- I've 5 aspx pages using masterpage
- My Web.Config

<?xml version="1.0"?>
<configuration>

<configSections>
<sectionGroup name="spring">
<section name="context" type="Spring.Context.Support.ContextHandler, Spring.Core"/>
<section name="objects" type="Spring.Context.Support.DefaultSectionHandler, Spring.Core"/>
</sectionGroup>
<section name="nhibernate" type="System.Configuration.NameValueSectionHandler, System, Version=1.0.5000.0,Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
</configSections>

<appSettings>
<add key="Log4NetConfigFile" value="~/Config/Log4NET.xml" />
</appSettings>

<spring>
<context type="Spring.Context.Support.WebApplicationContext, Spring.Web">
<resource uri="~/Config/Services.xml" />
</context>
</spring>

<system.web>
<httpHandlers>
<add verb="*" path="*.aspx" type="Spring.Web.Support.PageHandlerFactory, Spring.Web"/>
</httpHandlers>
<compilation debug="true"/>
<sessionState mode="InProc" stateConnectionString="tcpip=127.0.0.1:42424" sqlConnectionString="data source=127.0.0.1;Trusted_Connection=yes" cookieless="false" timeout="20" />
</system.web>

<nhibernate>
<add key="hibernate.connection.provider" value="NHibernate.Connection.DriverConnectionProvider"/>
<add key="hibernate.dialect" value="NHibernate.Dialect.MsSql2000Dialect"/>
<add key="hibernate.connection.driver_class" value="NHibernate.Driver.SqlClientDriver"/>
<add key="hibernate.connection.connection_string" value="Data Source=LF0512-1\DEV;Initial Catalog=DBTest;Persist Security Info=True;User ID=DBTestUser;Password=boulet"/>
</nhibernate>

</configuration>


- My spring config file :

<?xml version="1.0" encoding="utf-8" ?>
<objects xmlns="http://www.springframework.net">

<object id="UserManager" type="TestSite.Service.Impl.UserManager, TestSite.Service" singleton="true" scope="application" />
<object id="FunctionManager" type="TestSite.Service.Impl.FunctionManager, TestSite.Service" singleton="true" scope="application" />
<object id="ConnexionManager" type="TestSite.Service.Impl.ConnexionManager, TestSite.Service" singleton="true" scope="application" />

<object id="EditCompte" type="~/EditCompte.aspx">
</object>

<object id="AddFunction" type="~/AddFunction.aspx">
<property name="FunctionManager" ref="FunctionManager"/>
</object>

<object id="Compte" type="~/Compte.aspx">
<property name="UserManager" ref="UserManager"/>
</object>

<object id="ListeCompte" type="~/ListeCompte.aspx">
<property name="UserManager" ref="UserManager"/>
</object>

<object id="Default" type="~/Default.aspx">
<property name="ConnexionManager" ref="ConnexionManager"/>
</object>

</objects>


I don't find any advice for my problem. If somebody can help me.

[Aleks Seovic]

Your issue was resolved few weeks ago when another user pointed out that they had some threading issues during load testing. Basically, what used to happen is that .NET didn't synchronize the calls to HttpContext.GetConfig, which resulted in multiple request threads trying to instantiate same context.

If you get the latest nightly release this issue should be solved.

However, Spring.Web is not supported with ASP.NET at the moment and there are a few things we need to do that will make it play better with .NET framework 2.0 in general. You can try to use it, but I just wanted to warn you that you might run into ASP.NEt 2.0-specific issues.

Regards,

Aleks

[gregoun]

Thanks for your response i'll try to use nightly release.

I don't know why but when i put the spring mapping in an external file using :

<context type="Spring.Context.Support.WebApplicationContext, Spring.Web">
<resource uri="~/Config/Web.xml" />
</context>

and if i remove the section definition into the <section group> part, i never have the problem.

Regards,

Greg