Olá,
estou utilizando os seguintes frameworks em um projeto web:
- Spring 1.2.6
- Hibernate 3.1
- JSF 1.1
- TomCat 5.5
- Java 5
Eu tentei configurar o filtro OpenSessionInViewFilter para acessar meus TOs em meus Managed Beans (JSF) utilizando lazy-load, mas eu devo ter cometido algum equivoco, pois quando tento acessar, vejo o famoso erro:
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closedAcredito que eu devo ter cometido algum engano na configuração do filtro. Vejam como eu configurei meus arquivos xml:
<?xml version="1.0"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>PauliWeb</display-name>
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</param-value>
</context-param>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/classes/boContext.xml,/WEB-INF/classes/daoContext.xml,/WEB-INF/classes/dataSource.xml,/WEB-INF/classes/hibernateProperties.xml,/WEB-INF/classes/servicesContext.xml,/WEB-INF/classes/transactionContext.xml</param-value>
</context-param>
<filter>
<display-name>Ajax4jsf Filter</display-name>
<filter-name>ajax4jsf</filter-name>
<filter-class>org.ajax4jsf.Filter</filter-class>
</filter>
<filter-mapping>
<filter-name>ajax4jsf</filter-name>
<servlet-name>Faces Servlet</servlet-name>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
<dispatcher>INCLUDE</dispatcher>
</filter-mapping>
<listener>
<listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>
<filter>
<filter-name>sessionFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>sessionFilter</filter-name>
<url-pattern>*.jsf</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>sessionFilter</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Faces Servlet -->
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- usado pelo inputFileUpload (MyFaces JSF Component) -->
<filter>
<filter-name>ExtensionsFilter</filter-name>
<filter-class>
org.apache.myfaces.component.html.util.ExtensionsFilter
</filter-class>
<init-param>
<param-name>uploadMaxFileSize</param-name>
<param-value>10m</param-value>
</init-param>
<init-param>
<param-name>uploadThresholdSize</param-name>
<param-value>500k</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>ExtensionsFilter</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
<!-- Faces Servlet Mapping -->
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<login-config>
<auth-method>BASIC</auth-method>
</login-config>
</web-app>
Acredito que nao preciso incluir todos os meus arquivos XML, visto que eles sao apenas mapeamentos de meus beans. Vou dar prioridade para o s relacionados a persistencia:
hibernateProperties.xml (fragmento)
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>
<property name="mappingResources">
<list>
...
</list>
</property>
<property name="hibernateProperties">
<ref local="hibernateProperties"/>
</property>
</bean>
...
<!-- This is the base definition for all Hibernate based DAOs -->
<bean id="hibernateDaoSupport"
class="org.springframework.orm.hibernate3.support.HibernateDaoSupport"
abstract="true">
<property name="sessionFactory">
<ref bean="sessionFactory"/>
</property>
</bean>daoContext.xml (fragmento)
<bean id="productDAO" class="br.com.nonono.dao.impl.ProductDAOHibernateImpl"
parent="hibernateDaoSupport">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>transactionContext.xml
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" >
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>
<!-- This is the base transaction proxy factory bean, all transactional managers
use this bean definition. -->
<bean id="txProxyTemplate" abstract="true"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<property name="transactionManager">
<ref bean="transactionManager"/>
</property>
<property name="transactionAttributes">
<props>
<prop key="save*">PROPAGATION_REQUIRED</prop>
<prop key="store*">PROPAGATION_REQUIRED</prop>
<prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="read*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="load*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="find*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="*">PROPAGATION_REQUIRED</prop>
</props>
</property>
<property name="preInterceptors">
<list>
</list>
</property>
<property name="postInterceptors">
<list>
</list>
</property>
</bean>enfim, serviceContext.xml (fragmento)
<bean id="pauliWebServices" parent="txProxyTemplate">
<property name="proxyInterfaces">
<value>br.com.nonono.services.PauliWebServices</value>
</property>
<property name="target">
<bean class="br.com.nonono.services.impl.PauliWebServicesImpl">
<property name="productBO">
<ref bean="productBO"/>
</property>
</bean>
</property>
</bean> Meus DAOs todos herdam de HibernateDaoSupport e utilizam getHibernateTemplate().
Acredito que eu deva ter feito alguma configuracao errada no Filtro. Quando eu executo o codigo abaixo no meu Managed bean, ocorre o erro:
Product prod = services.findProductById(87);
prod.getImage();
O log da aplicacao eh:
75500 [http-8080-Processor24] DEBUG org.springframework.orm.hibernate3.HibernateTransactionManager - Closing Hibernate Session [org.hibernate.impl.SessionImpl@103c520] after transaction
75500 [http-8080-Processor24] DEBUG org.springframework.orm.hibernate3.SessionFactoryUtils - Closing Hibernate Session
75500 [http-8080-Processor24] DEBUG org.hibernate.impl.SessionImpl - closing session
75500 [http-8080-Processor24] DEBUG org.hibernate.jdbc.ConnectionManager - performing cleanup
75500 [http-8080-Processor24] DEBUG org.hibernate.jdbc.ConnectionManager - closing JDBC connection [ (open PreparedStatements: 0, globally: 0) (open ResultSets: 0, globally: 0)]
75515 [http-8080-Processor24] DEBUG org.hibernate.jdbc.JDBCContext - after transaction completion
75515 [http-8080-Processor24] DEBUG org.hibernate.jdbc.ConnectionManager - transaction completed on session with on_close connection release mode; be sure to close the session to release JDBC resources!
75515 [http-8080-Processor24] DEBUG org.hibernate.impl.SessionImpl - after transaction completion
78031 [http-8080-Processor24] ERROR org.hibernate.LazyInitializationException - 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.initialize(AbstractLazyInitializer.java:56)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:98)
at org.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:158)
at br.com.nonono.to.Image$$EnhancerByCGLIB$$bd4cc5a7_2.getImage(<generated>)
at br.com.nonono.jsf.visualizarproduto.VisualizarProduto.doComprar(VisualizarProduto.java:37)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:126)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)
at javax.faces.component.UICommand.broadcast(UICommand.java:312)
at org.ajax4jsf.framework.ajax.AjaxViewRoot.processEvents(AjaxViewRoot.java:281)
at org.ajax4jsf.framework.ajax.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:257)
at org.ajax4jsf.framework.ajax.AjaxViewRoot.processApplication(AjaxViewRoot.java:412)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:75)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:144)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:65)
at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:226)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:71)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)Percebi que quando eu carrego a pagina, aparece no log a mensagem:
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter - Opening single Hibernate Session in OpenSessionInViewFiltere, quando a pagina é carregada, aparece tbm:
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter - Closing single Hibernate Session in OpenSessionInViewFilterPorem, quando eu clico no <h:commandButtom> para que ele invoque a action do meu managed bean (veja log acima), o filtro aparentemente nao é invocado.
O que será que está errado na minha configuracao? Alguem consegue ver onde eu me equivoquei?
Agradeco qquer ajuda.
