How to use OpenSessionInViewFilter

[JayJayBee]

Hi everyone,

I'm using the following frameworks for my web application:

Hibernate 3.0.5
Spring 1.2.5
Struts 1.2.7
Tomcat 5.0.28

I tried to set up OpenInSessionViewFilter to access my persistent collections lazily in my views. Unfortunately, it seems i didn't configure my web.xml correctly as i always get this famous error :
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed



This is how I configured my xml files:

web.xml (sorry for the indentation)
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/application-context.xml</param-value>
</context-param>
<filter>
<filter-name>hibernateFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.O penSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>hibernateFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoade rListener</listener-class>
</listener>
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>3</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>3</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>/welcome.jsp</welcome-file>
</welcome-file-list>

struts-config.xml
<struts-config>
<form-beans>
...
</form-beans>

<global-exceptions />

<global-forwards>
<forward name="portal" path="/index.jsp" />
<forward name="loginPage" path="/login.jsp"/>
</global-forwards>

<action-mappings>
<action path="/toModule" type="org.springframework.web.struts.DelegatingAct ionProxy" />

<action path="/welcome" type="org.springframework.web.struts.DelegatingAct ionProxy" />
...
</action-mappings>

<controller processorClass="myApp.struts.main.RequestProcessor " />

<message-resources parameter="myApp.struts.ApplicationResources" />


<plug-in className="org.springframework.web.struts.ContextL oaderPlugIn">
<set-property property="contextConfigLocation" value="/WEB-INF/application-context.xml" />
</plug-in>
</struts-config>

application-context.xml
<beans>

<import resource="controller.xml" />
<import resource="service.xml" />
<import resource="dao.xml" />
<import resource="persistence.xml" />
</beans>

i won't include all the xml as they are just mapping of beans. I'ill just focus on persistence.xml

persistence.xml
<beans>
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSes sionFactoryBean" singleton="true">
<property name="dataSource">
<ref local="dataSource" />
</property>
<property name="mappingResources">
...
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQ LDialect</prop>
<prop key="hibernate.show_sql">false</prop>
</props>
</property>
<bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryB ean">
<property name="jndiName">
<value>java:/comp/env/myDS</value>
</property>
</bean>
</beans>

It seems my hibernateFilter that i have defined just doesn't work because of a mistake in my configuration...


Would you mind telling my what's wrong with my configuraion of OpenSessionInViewFilter ?
Did I forget something ?


Thank you in advance for your help.

Best Regards,

Jay

[kbaum]

Just by looking over your configurations, I cannot see anything wrong. When the error occurs, what's the request url in the browser? What's the stack trace?

-karl

[JayJayBee]

Thanks for your comments,


my url end with showSubmissionForm.do. Everything seems normal here

Though, i'd like to point out that i'm using tiles to render my page. Does this has a role in my problem?

This is the error trace:
GRAVE: could not initialize proxy - the owning Session was closed
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed
at org.hibernate.proxy.AbstractLazyInitializer.initia lize(AbstractLazyInitializer.java:53)
at org.hibernate.proxy.AbstractLazyInitializer.getImp lementation(AbstractLazyInitializer.java:84)
at org.hibernate.proxy.CGLIBLazyInitializer.intercept (CGLIBLazyInitializer.java:134)
at myPackage.Person$$EnhancerByCGLIB$$c7ee8950.getFir stname(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.commons.beanutils.PropertyUtilsBean.inv okeMethod(PropertyUtilsBean.java:1773)
at org.apache.commons.beanutils.PropertyUtilsBean.get SimpleProperty(PropertyUtilsBean.java:1132)
at org.apache.commons.beanutils.PropertyUtilsBean.get NestedProperty(PropertyUtilsBean.java:686)
at org.apache.commons.beanutils.PropertyUtilsBean.get Property(PropertyUtilsBean.java:715)
at org.apache.commons.beanutils.PropertyUtils.getProp erty(PropertyUtils.java:290)
at org.apache.struts.taglib.TagUtils.lookup(TagUtils. java:950)
at org.apache.struts.taglib.bean.WriteTag.doStartTag( WriteTag.java:225)
at org.apache.jsp.IdeaSubmission.ideaSubmissionForm_j sp._jspx_meth_bean_write_4(ideaSubmissionForm_jsp. java:1302)
at org.apache.jsp.IdeaSubmission.ideaSubmissionForm_j sp._jspService(ideaSubmissionForm_jsp.java:503)
at org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.ApplicationDispatcher.inv oke(ApplicationDispatcher.java:704)
at org.apache.catalina.core.ApplicationDispatcher.doI nclude(ApplicationDispatcher.java:590)
at org.apache.catalina.core.ApplicationDispatcher.inc lude(ApplicationDispatcher.java:510)
at org.apache.jasper.runtime.JspRuntimeLibrary.includ e(JspRuntimeLibrary.java:966)
at org.apache.jasper.runtime.PageContextImpl.include( PageContextImpl.java:581)
at org.apache.struts.tiles.TilesUtilImpl.doInclude(Ti lesUtilImpl.java:99)
at org.apache.struts.tiles.TilesUtil.doInclude(TilesU til.java:135)
at org.apache.struts.taglib.tiles.InsertTag.doInclude (InsertTag.java:760)
at org.apache.struts.taglib.tiles.InsertTag$InsertHan dler.doEndTag(InsertTag.java:892)
at org.apache.struts.taglib.tiles.InsertTag.doEndTag( InsertTag.java:462)
at org.apache.jsp.layout.formLayout_jsp._jspx_meth_ti les_insert_1(formLayout_jsp.java:182)
at org.apache.jsp.layout.formLayout_jsp._jspx_meth_ht ml_html_0(formLayout_jsp.java:122)
at org.apache.jsp.layout.formLayout_jsp._jspService(f ormLayout_jsp.java:74)
at org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.ApplicationDispatcher.inv oke(ApplicationDispatcher.java:704)
at org.apache.catalina.core.ApplicationDispatcher.doI nclude(ApplicationDispatcher.java:590)
at org.apache.catalina.core.ApplicationDispatcher.inc lude(ApplicationDispatcher.java:510)
at org.apache.jasper.runtime.JspRuntimeLibrary.includ e(JspRuntimeLibrary.java:966)
at org.apache.jasper.runtime.PageContextImpl.include( PageContextImpl.java:581)
at org.apache.struts.tiles.TilesUtilImpl.doInclude(Ti lesUtilImpl.java:99)
at org.apache.struts.tiles.TilesUtil.doInclude(TilesU til.java:135)
at org.apache.struts.taglib.tiles.InsertTag.doInclude (InsertTag.java:760)
at org.apache.struts.taglib.tiles.InsertTag$InsertHan dler.doEndTag(InsertTag.java:892)
at org.apache.struts.taglib.tiles.InsertTag.doEndTag( InsertTag.java:462)
at org.apache.jsp.IdeaSubmission.ideaSubmissionFormPa ge_jsp._jspx_meth_tiles_insert_0(ideaSubmissionFor mPage_jsp.java:115)
at org.apache.jsp.IdeaSubmission.ideaSubmissionFormPa ge_jsp._jspService(ideaSubmissionFormPage_jsp.java :69)
at org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.ApplicationDispatcher.inv oke(ApplicationDispatcher.java:704)
at org.apache.catalina.core.ApplicationDispatcher.pro cessRequest(ApplicationDispatcher.java:474)
at org.apache.catalina.core.ApplicationDispatcher.doF orward(ApplicationDispatcher.java:409)
at org.apache.catalina.core.ApplicationDispatcher.for ward(ApplicationDispatcher.java:312)
at org.apache.struts.action.RequestProcessor.doForwar d(RequestProcessor.java:1063)
at org.apache.struts.action.RequestProcessor.processF orwardConfig(RequestProcessor.java:386)
at org.apache.struts.action.RequestProcessor.process( RequestProcessor.java:229)
at org.apache.struts.action.ActionServlet.process(Act ionServlet.java:1194)
at org.apache.struts.action.ActionServlet.doGet(Actio nServlet.java:414)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:157)
at org.springframework.orm.hibernate3.support.OpenSes sionInViewFilter.doFilterInternal(OpenSessionInVie wFilter.java:174)
at org.springframework.web.filter.OncePerRequestFilte r.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invo keInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(Co yoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(P oolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)


Thank you in advance for your help

[JayJayBee]

Well I tried without tiles but it doesn't work... So that was not the cause...

Any idea?

Thanks

[sethladd]

Hi,

I'd crank up the debug logging to see if the filter is actually running. You never know.

OSIVFilter will print these two lines:

Opening single Hibernate Session in OpenSessionInViewFilter

Closing single Hibernate Session in OpenSessionInViewFilter

See if you see those, and in the place you expect.

Seth

[JayJayBee]

I think that my problem comes from this reason :

In order to define the OpenSessionInViewFilter, i have to load a spring context. I have to do it through the definition, in web.xml of a listener. (ContextLoaderListener).
The trouble is that i have to define once again my context for struts. Indeed, in struts-config.xml, i have to register an application context thank to ContextLoaderPlugin.

If i don't define both contexts, i have exceptions (no context registered).
Though, by defining twice my context, then, i see in logs that my contexts are actually loaded twice... Maybe that would explain why OpenSessionInViewFilter cannot retrieve the sessionFactory as there are 2 different contexts loaded...

My Question is then : How to define a unic context for struts and my OpenSessionInViewFilter ? Is it possible ? Will it solve my problem?

Thank you in advance for your help,

Best Regards

Jay