OpenSessionInViewFilter: Error 500: Filter [hibernateFilter]

[davidliu]

im using:

- Struts for the web context
- Spring for the bussiness contex
- Spring + Hiberante for the data access context

im using ContextLoaderPlugIn to connect struts with spring

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

my data access context is something like this:

<!-- ********** Data Sources ********** -->

<!-- VEPDS -->
<bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryB ean">
<property name="jndiName">
<value>java:comp/env/jdbc/vepds</value>
</property>
</bean>

<!-- ********** Session Factory ********** -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate.LocalSess ionFactoryBean">
<property name="dataSource">
<ref local="dataSource"/>
</property>
<property name="mappingResources">
<list>
<value>com\dsi\po\Address.hbm</value>
<value>com\dsi\po\PersonPO.hbm</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">net.sf.hibernate.dialect.S QLServerDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>

<!-- ********** Transaction Manager ********** -->

<bean id="transactionManager" class="org.springframework.orm.hibernate.Hibernate TransactionManager">
<property name="sessionFactory">
<ref local="sessionFactory"/>
</property>
</bean>

<!-- ********** Data Access Objects ********** -->

<bean id="addressDAO" class="com.dsi.dao.AddressHibernateDao">
<property name="sessionFactory">
<ref local="sessionFactory"/>
</property>
</bean>

my business context:

<!-- ********** Bussiness Objects ********** -->
<bean id="addressDAOProxy" class="org.springframework.transaction.interceptor .TransactionProxyFactoryBean">
<property name="transactionManager">
<ref bean="transactionManager"/>
</property>
<property name="target">
<ref local="addressDAO"/>
</property>
<property name="transactionAttributes">
<props>
<prop key="save*">PROPAGATION_REQUIRED</prop>
<prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="is*">PROPAGATION_REQUIRED,readOnly</prop>
</props>
</property>
</bean>
<bean id="addressService" class="com.dsi.bean.AddressServiceImpl">
<property name="addressDao">
<ref local="addressDAOProxy"/>
</property>
</bean>
<!-- ********** Struts Objects ********** -->
<bean name="/addaddress" class="com.dsi.action.InsertAddressAction" singleton="false">
<property name="addressService">
<ref local="addressService"/>
</property>
</bean>

i configure the filter in web.xml

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/springconfig.xml</param-value>
</context-param>
<filter>
<filter-name>hibernateFilter</filter-name>
<filter-class>org.springframework.orm.hibernate.support.Op enSessionInViewFilter</filter-class>
<init-param>
<param-name>singleSession</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>sessionFactoryBeanName</param-name>
<param-value>sessionFactory</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>hibernateFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>hibernateFilter</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoade rListener</listener-class>
</listener>

<!-- my InsertAddressAction.java >
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
long addressId = 1L;
Address address=addressService.getAddress(addressId);

System.out.print("address.getPersonPOSet().size()= "+address.getPersonPOSet().size());
mapping.findForward("");
}

but when i call a "addaddress.do" url that list a collection that is lazy loaded i get this error:

Error 500: Filter [hibernateFilter]

the stacktrace is:

javax.servlet.ServletException: Failed to lazily initialize a collection - no session or session was closed
org.apache.struts.action.RequestProcessor.processE xception(RequestProcessor.java:545)
org.apache.struts.action.RequestProcessor.processA ctionPerform(RequestProcessor.java:486)
org.apache.struts.action.RequestProcessor.process( RequestProcessor.java:274)
org.apache.struts.action.ActionServlet.process(Act ionServlet.java:1482)
org.apache.struts.action.ActionServlet.doPost(Acti onServlet.java:525)
javax.servlet.http.HttpServlet.service(HttpServlet .java:709)
javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
org.springframework.orm.hibernate.support.OpenSess ionInViewFilter.doFilterInternal(OpenSessionInView Filter.java:172)
org.springframework.web.filter.OncePerRequestFilte r.doFilter(OncePerRequestFilter.java:76)

net.sf.hibernate.LazyInitializationException: Failed to lazily initialize a collection - no session or session was closed
net.sf.hibernate.collection.PersistentCollection.i nitialize(PersistentCollection.java:209)
net.sf.hibernate.collection.PersistentCollection.r ead(PersistentCollection.java:71)
net.sf.hibernate.collection.Set.size(Set.java:106)
com.dsi.action.InsertAddressAction.execute(InsertA ddressAction.java:70)
org.springframework.web.struts.DelegatingActionPro xy.execute(DelegatingActionProxy.java:105)
org.apache.struts.action.RequestProcessor.processA ctionPerform(RequestProcessor.java:484)
org.apache.struts.action.RequestProcessor.process( RequestProcessor.java:274)
org.apache.struts.action.ActionServlet.process(Act ionServlet.java:1482)
org.apache.struts.action.ActionServlet.doPost(Acti onServlet.java:525)
javax.servlet.http.HttpServlet.service(HttpServlet .java:709)
javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
org.springframework.orm.hibernate.support.OpenSess ionInViewFilter.doFilterInternal(OpenSessionInView Filter.java:172)
org.springframework.web.filter.OncePerRequestFilte r.doFilter(OncePerRequestFilter.java:76)



i have read all the post in the forum related to OpenSessionInViewFilter ... buy i dont know whats happening ....

what am i doint wrong ???

thanks for your help

david

[Costin Leau]

Check out this http://forum.springframework.org/showthread.php?t=14910 - apparently there is a problem when loading the Spring context inside struts.