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java.lang.NullPointerException w/CRUD Demo #36

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
Hello,
I have a project which I am using Hibernate and Struts2 together, and I am new 
to both of them.

I am having trouble working out the CRUD process with the Hibernate and Struts2 
combinations. I want to do this in a specific way, but am having trouble. To 
replicate the issue I am having outside of my main project I downloaded the WAR 
from this tutorial and successfully got it running:
http://struts.apache.org/2.x/docs/crud-demo-i.html

Then I introduced Hibernate to it by making the following changes:
  1) First I added the JARs from my real project to this one to make sure I was running all the same versions of everything. The key points are I am suing Hibernate 3, Struts2, and the FullHibernateCore plugin to link them. For more detail, here are the JARs I am using:
antlr-2.7.7.jar
commons-collections-3.2.1.jar
commons-fileupload-1.2.2.jar
commons-io-2.0.1.jar
commons-lang-2.5.jar
commons-logging-1.1.1.jar
commons-logging-api-1.1.jar
dom4j-1.6.1.jar
freemarker-2.3.18.jar
hibernate3.jar
hibernate-jpa-2.0-api-1.0.1.Final.jar
hibernate-testing.jar
hibernate-validator.jar
javassist-3.15.0-GA.jar
jboss-logging-3.1.0.CR2.jar
jboss-transaction-api_1.1_spec-1.0.0.Final.jar
jta-1.1.jar
log4j-1.2.15.jar
mysql-connector-java-5.1.18-bin.jar
ognl-3.0.4.jar
slf4j-api-1.6.1.jar
slf4j-log4j12-1.6.1.jar
struts2-core-2.3.1.2.jar
struts2-fullhibernatecore-plugin-2.2.2-GA.jar
xwork-core-2.3.1.2.jar

  2) Added hibernate.cfg.xml as follows:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

    <!-- a SessionFactory instance listed as /jndi/name -->
    <session-factory>

        <!-- DB Connection Settings -->
        <property name="connection.url">jdbc:mysql://localhost:3306</property>
        <property name="connection.username">root</property>
        <property name="connection.password"></property>
        <property name="hibernate.default_schema">test2</property>
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property> 

        <!-- DB Dialect -->
        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>

        <!-- Echo SQL -->
        <property name="show_sql">true</property>

        <!-- Model Mappings -->
        <mapping class="com.aurifa.struts2.tutorial.model.Employee"/> 
        <mapping class="com.aurifa.struts2.tutorial.model.Department"/> 

    </session-factory>

</hibernate-configuration>

  3) Updated com.aurifa.struts2.tutorial.model.Department & com.aurifa.struts2.tutorial.model.Employee with persistence annotation.
  4) Created com.rwblackburn.struts2.tutorial.dao.InitHibernate, and executed it to create initial DB and populate it with the same data as demo:
package com.rwblackburn.struts2.tutorial.dao;

import java.util.Date;
import java.util.GregorianCalendar;
import java.util.List;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.tool.hbm2ddl.SchemaExport;

import com.aurifa.struts2.tutorial.model.Department;
import com.aurifa.struts2.tutorial.model.Employee;

public class InitHibernate {

    /**
     * @param args
     */
    public static void main(String[] args) {
        AnnotationConfiguration config = new AnnotationConfiguration();
        config.addAnnotatedClass( Employee.class );
        config.addAnnotatedClass( Department.class );
        config.configure("hibernate.cfg.xml");

        // Create annotated class tables
        new SchemaExport(config).create(true, true);

        // Need to be careful with this, move it to a Struts global plugin?
        SessionFactory factory = config.buildSessionFactory();
        Session session = factory.openSession();
        session.beginTransaction();

        session.beginTransaction();

        // Create Departments
        Department dptAccounting = new Department( new Integer(100), "Accounting" );
        Department dptRandD = new Department( new Integer(200), "R & D");
        Department dptSales = new Department( new Integer(300), "Sales" );
        session.save(dptAccounting);
        session.save(dptRandD);
        session.save(dptSales);

        // Create Employees
        session.save(new Employee(new Integer(1), "John", "Doe", new Integer(36), dptAccounting));
        session.save(new Employee(new Integer(2), "Bob", "Smith", new Integer(25), dptSales));

        session.getTransaction().commit();

    }

}

  5) Created com.rwblackburn.struts2.tutorial.dao.EmployeeHibernateDao which implements EmployeeDao
package com.rwblackburn.struts2.tutorial.dao;

import java.util.List;

import org.hibernate.Session;
import org.hibernate.Transaction;

import com.aurifa.struts2.tutorial.dao.EmployeeDao;
import com.aurifa.struts2.tutorial.model.Employee;
import com.googlecode.s2hibernate.struts2.plugin.annotations.SessionTarget;
import com.googlecode.s2hibernate.struts2.plugin.annotations.TransactionTarget;

public class EmployeeHibernateDao implements EmployeeDao {
    @SessionTarget
    protected Session session;

    @TransactionTarget
    protected Transaction transaction;

    @SuppressWarnings("rawtypes")
    @Override
    public List getAllEmployees() {
        return session.createQuery( "from Employee" ).list();
    }

    @Override
    public Employee getEmployee(Integer id) {
        Employee emp = new Employee();
        session.load(emp, id );
        return emp;
    }

    @Override
    public void update(Employee emp) {
        session.update(emp);

    }

    @Override
    public void insert(Employee emp) {
        session.save(emp);
    }

    @Override
    public void delete(Integer id) {
        Employee emp = new Employee();
        session.load(emp, id );
        session.delete(emp);
    }

}

  6) Created com.rwblackburn.struts2.tutorial.dao.DepartmentHibernateDao which implements DepartmentDao
package com.rwblackburn.struts2.tutorial.dao;

import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.hibernate.Session;
import org.hibernate.Transaction;

import com.aurifa.struts2.tutorial.dao.DepartmentDao;
import com.aurifa.struts2.tutorial.model.Department;
import com.googlecode.s2hibernate.struts2.plugin.annotations.SessionTarget;
import com.googlecode.s2hibernate.struts2.plugin.annotations.TransactionTarget;

public class DepartmentHibernateDao implements DepartmentDao {
    @SessionTarget
    protected Session session;

    @TransactionTarget
    protected Transaction transaction;

    @SuppressWarnings("rawtypes")
    @Override
    public List getAllDepartments() {
        return session.createQuery( "from Department" ).list();
    }

    @SuppressWarnings("rawtypes")
    @Override
    public Map getDepartmentsMap() {
        Map<Integer, Department> departmentsMap = new HashMap<Integer, Department>();
        Iterator iter = this.getAllDepartments().iterator();
        while( iter.hasNext() ) {
            Department dept = (Department)iter.next();
            departmentsMap.put(dept.getDepartmentId(), dept );
        }
        return departmentsMap;
    }

}

  7) Updated EmployeeDaoService & DepartmentDaoService to use the new hibernate DAOs instead of the "NoDB" version from the demo

Now, InitHibernate runs just fine, so I know at least that much works and the 
DB itself is fine. However, when I try to load up the project in a browser the 
index.action page gives this error:

java.lang.NullPointerException
   com.rwblackburn.struts2.tutorial.dao.DepartmentHibernateDao.getAllDepartments(DepartmentHibernateDao.java:26)
    com.aurifa.struts2.tutorial.service.DepartmentDaoService.getAllDepartments(DepartmentDaoService.java:16)
    com.aurifa.struts2.tutorial.action.EmployeeAction.prepare(EmployeeAction.java:35)
    com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:167)
    com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:192)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
    org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:510)
    org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
    org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
    org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
    org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:185)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:151)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
    org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
    org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:269)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    java.lang.Thread.run(Thread.java:722)

When I do a debug trace I can confirm that the Session and Transaction 
variables in DepartmentHibernateDao are in fact null. 

After doing a lot of searching around I found this thread:
http://stackoverflow.com/questions/6294764/struts2-full-hibernate-plugin-session
-is-closed

This seems to be the same issue I was having. However, even if I downgrade by 
Struts version to 2.1.6, I still have the problem, Here is my new libraries:
     antlr-2.7.2.jar
     commons-collections-3.2.jar
     commons-fileupload-1.2.1.jar
     commons-io-1.3.2.jar
     commons-lang-2.3.jar
     commons-logging-1.0.4.jar
     commons-logging-api-1.1.jar
     commons-validator-1.3.1.jar
     dom4j-1.6.1.jar
     freemarker-2.3.13.jar
     hibernate3.jar
     hibernate-jpa-2.0-api-1.0.1.Final.jar
     hibernate-testing.jar
     hibernate-validator.jar
     javassist-3.15.0-GA.jar
     jboss-logging-3.1.0.CR2.jar
     jboss-transaction-api_1.1_spec-1.0.0.Final.jar
     jta-1.1.jar
     log4j-1.2.15.jar
     mysql-connector-java-5.1.18-bin.jar
     ognl-2.6.11.jar
     slf4j-api-1.6.1.jar
     slf4j-log4j12-1.6.1.jar
     struts2-core-2.1.6.jar
     struts2-fullhibernatecore-plugin-2.2.2-GA.jar
     xwork-2.1.2.jar

Also also implemented the quasi-fix listed in that thread by adding a “if 
(session == null)” check before some of the hibernate session calls. For 
example:
    @SuppressWarnings("rawtypes")
    @Override
    public List getAllDepartments() {
        if (session == null) {
            System.out.println("****** CREATING SESSION ******");
            session = com.googlecode.s2hibernate.struts2.plugin.util.HibernateSessionFactory.getNewSession();
            if (!session.isOpen()) {
                throw new NullPointerException("Fix the code: session's not here");
            }
            transaction = session.beginTransaction();
        }

        if(!session.isOpen()) {
                System.out.println("****** REOPENING SESSION ******");

                session = session.getSessionFactory().openSession();
                //session = com.googlecode.s2hibernate.struts2.plugin.util.HibernateSessionFactory.getNewSession();
                transaction = session.beginTransaction();
        }

        return session.createQuery( "from Department" ).list();
    }

The second if I add to avoid a “org.hibernate.SessionException: Session is 
closed!” based on this thread: 
https://forum.hibernate.org/viewtopic.php?f=1&t=983523&view=previous

This gets me passed the “java.lang.NullPointerException” and 
“org.hibernate.SessionException: Session is closed!” some of the times but 
this is inconsistent, if I keep refreshing the page it eventually comes back. 

Here is the stack trace for this new issue (you can see some of my print lines 
fomr the method above):
    [DEBUG] com.opensymphony.xwork2.config.ConfigurationManager.debug:57 - Checking ConfigurationProviders for reload.
    [DEBUG] com.opensymphony.xwork2.conversion.impl.InstantiatingNullHandler.debug:57 - Entering nullPropertyValue [target=[com.opensymphony.xwork2.DefaultTextProvider@29e03842], property=struts]
    [WARN ] com.opensymphony.xwork2.ognl.OgnlValueStack.warn:45 - Could not find property [struts.actionMapping]
    [DEBUG] com.opensymphony.xwork2.config.ConfigurationManager.debug:57 - Checking ConfigurationProviders for reload.
    [DEBUG] com.opensymphony.xwork2.conversion.impl.InstantiatingNullHandler.debug:57 - Entering nullPropertyValue [target=[com.opensymphony.xwork2.DefaultTextProvider@29e03842], property=struts]
    [WARN ] com.opensymphony.xwork2.ognl.OgnlValueStack.warn:45 - Could not find property [struts.valueStack]
    [DEBUG] com.opensymphony.xwork2.config.ConfigurationManager.debug:57 - Checking ConfigurationProviders for reload.
    [DEBUG] com.opensymphony.xwork2.DefaultActionProxy.debug:57 - Creating an DefaultActionProxy for namespace / and action name crud
    [DEBUG] com.opensymphony.xwork2.interceptor.PrefixMethodInvocationUtil.debug:57 - cannot find method [prepareSave] in action [com.aurifa.struts2.tutorial.action.EmployeeAction@4e8659a]
    [DEBUG] com.opensymphony.xwork2.interceptor.PrefixMethodInvocationUtil.debug:57 - cannot find method [prepareDoSave] in action [com.aurifa.struts2.tutorial.action.EmployeeAction@4e8659a]
    ****** REOPENING SESSION ******
    Hibernate: select department0_.departmentId as departme1_1_, department0_.name as name1_ from test2.Department department0_
    ****** REOPENING SESSION ******
    Hibernate: select employee0_.employeeId as employeeId0_1_, employee0_.age as age0_1_, employee0_.departmentId as departme5_0_1_, employee0_.firstName as firstName0_1_, employee0_.lastName as lastName0_1_, department1_.departmentId as departme1_1_0_, department1_.name as name1_0_ from test2.Employee employee0_ left outer join test2.Department department1_ on employee0_.departmentId=department1_.departmentId where employee0_.employeeId=?
    [DEBUG] com.opensymphony.xwork2.interceptor.I18nInterceptor.debug:57 - intercept '//crud' { 
    [DEBUG] com.opensymphony.xwork2.interceptor.I18nInterceptor.debug:57 - before Locale=en_US
    [DEBUG] com.opensymphony.xwork2.conversion.impl.InstantiatingNullHandler.debug:57 - Entering nullPropertyValue [target=[com.aurifa.struts2.tutorial.action.EmployeeAction@4e8659a, com.opensymphony.xwork2.DefaultTextProvider@29e03842], property=struts]
    [WARN ] com.opensymphony.xwork2.ognl.OgnlValueStack.warn:45 - Could not find property [struts]
    [DEBUG] org.apache.struts2.interceptor.FileUploadInterceptor.debug:57 - Bypassing //crud
    [DEBUG] com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.debug:57 - Setting static parameters {}
    [DEBUG] com.opensymphony.xwork2.interceptor.ParametersInterceptor.debug:57 - Setting params employee.age => [ 4 ] employee.department.departmentId => [ 1 ] employee.employeeId => [ 9 ] employee.firstName => [ dsadsa ] employee.lastName => [ dsads ] 
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Property: age
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Class: com.aurifa.struts2.tutorial.model.Employee
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - field-level type converter for property [age] = none found
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Property: employee.age
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Class: com.aurifa.struts2.tutorial.action.EmployeeAction
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - global-level type converter for property [age] = none found
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - falling back to default type converter [com.opensymphony.xwork2.conversion.impl.XWorkBasicConverter@62f3782]
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Property: departmentId
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Class: com.aurifa.struts2.tutorial.model.Department
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - field-level type converter for property [departmentId] = none found
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Property: employee.department.departmentId
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Class: com.aurifa.struts2.tutorial.model.Employee
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - global-level type converter for property [departmentId] = none found
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - falling back to default type converter [com.opensymphony.xwork2.conversion.impl.XWorkBasicConverter@62f3782]
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Property: employeeId
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Class: com.aurifa.struts2.tutorial.model.Employee
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - field-level type converter for property [employeeId] = none found
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Property: employee.employeeId
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Class: com.aurifa.struts2.tutorial.action.EmployeeAction
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - global-level type converter for property [employeeId] = none found
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - falling back to default type converter [com.opensymphony.xwork2.conversion.impl.XWorkBasicConverter@62f3782]
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Property: firstName
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Class: com.aurifa.struts2.tutorial.model.Employee
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - field-level type converter for property [firstName] = none found
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Property: employee.firstName
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Class: com.aurifa.struts2.tutorial.action.EmployeeAction
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - global-level type converter for property [firstName] = none found
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - falling back to default type converter [com.opensymphony.xwork2.conversion.impl.XWorkBasicConverter@62f3782]
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Property: lastName
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Class: com.aurifa.struts2.tutorial.model.Employee
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - field-level type converter for property [lastName] = none found
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Property: employee.lastName
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Class: com.aurifa.struts2.tutorial.action.EmployeeAction
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - global-level type converter for property [lastName] = none found
    [DEBUG] com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - falling back to default type converter [com.opensymphony.xwork2.conversion.impl.XWorkBasicConverter@62f3782]
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.interceptors.SessionTransactionInjectorInterceptor.intercept:151 - Preparing Injection Hibernate Session and Transaction process: /crud - Method: com.aurifa.struts2.tutorial.action.EmployeeAction.save()
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.util.HibernateSessionFactory.getSession:91 - Hibernate Session Required (from current Thread) - SessionFactory required: (default)
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.util.HibernateSessionFactory.getSession:98 - No Hibernate Session in current thread. New Hibernate Session will be created and returned (SessionFactory "(default)")
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.util.HibernateSessionFactory.getNewSession:153 - New Hibernate Session required - SessionFactory required: (default)
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.util.HibernateSessionFactory.getNewSession:167 - New Hibernate Session created and returned (SessionFactory "")
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.interceptors.SessionTransactionInjectorInterceptor.getHibernateSessionFromFactory:380 - Hibernate Session from Full Hibernate Plugin's Hibernate Session Factory
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.interceptors.SessionTransactionInjectorInterceptor.debugInfoSessionInjectedByAnnotation:508 - Hibernate Session injected (by annotation) into Action. Field "session". Class "com.rwblackburn.struts2.tutorial.dao.EmployeeHibernateDao"
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.util.HibernateSessionFactory.getSession:91 - Hibernate Session Required (from current Thread) - SessionFactory required: (default)
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.util.HibernateSessionFactory.getSession:125 - Existing Hibernate Session from current thread returned (SessionFactory "")
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.interceptors.SessionTransactionInjectorInterceptor.getHibernateSessionFromFactory:380 - Hibernate Session from Full Hibernate Plugin's Hibernate Session Factory
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.interceptors.SessionTransactionInjectorInterceptor.debugInfoSessionInjectedByAnnotation:508 - Hibernate Session injected (by annotation) into Action. Field "session". Class "com.rwblackburn.struts2.tutorial.dao.DepartmentHibernateDao"
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.interceptors.SessionTransactionInjectorInterceptor.debugInfoTransactionInjectedByAnnotation:599 - Hibernate Transaction injected (by annotation) into Action. Field "transaction". Class "com.rwblackburn.struts2.tutorial.dao.EmployeeHibernateDao"
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.interceptors.SessionTransactionInjectorInterceptor.debugInfoTransactionInjectedByAnnotation:599 - Hibernate Transaction injected (by annotation) into Action. Field "transaction". Class "com.rwblackburn.struts2.tutorial.dao.DepartmentHibernateDao"
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.interceptors.SessionTransactionInjectorInterceptor.intercept:77 - Full     Hibernate Plugin Validation in class com.aurifa.struts2.tutorial.action.EmployeeAction
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.interceptors.SessionTransactionInjectorInterceptor.intercept:116 - Full Hibernate Plugin Validation found no erros.
    [DEBUG] com.opensymphony.xwork2.DefaultActionInvocation.debug:57 - Executing action method = input
    [DEBUG] org.apache.struts2.dispatcher.ServletRedirectResult.debug:57 - Redirecting to finalLocation /test2/index.action
    Hibernate: update test2.Employee set age=?, departmentId=?, firstName=?, lastName=? where employeeId=?
    [DEBUG] com.opensymphony.xwork2.config.ConfigurationManager.debug:57 - Checking ConfigurationProviders for reload.
    [DEBUG] com.opensymphony.xwork2.conversion.impl.InstantiatingNullHandler.debug:57 - Entering nullPropertyValue [target=[com.opensymphony.xwork2.DefaultTextProvider@29e03842], property=struts]
    [WARN ] com.opensymphony.xwork2.ognl.OgnlValueStack.warn:45 - Could not find property [struts.actionMapping]
    [DEBUG] com.opensymphony.xwork2.config.ConfigurationManager.debug:57 - Checking ConfigurationProviders for reload.
    [DEBUG] com.opensymphony.xwork2.conversion.impl.InstantiatingNullHandler.debug:57 - Entering nullPropertyValue [target=[com.opensymphony.xwork2.DefaultTextProvider@29e03842], property=struts]
    [WARN ] com.opensymphony.xwork2.ognl.OgnlValueStack.warn:45 - Could not find property [struts.valueStack]
    [DEBUG] com.opensymphony.xwork2.config.ConfigurationManager.debug:57 - Checking ConfigurationProviders for reload.
    [DEBUG] com.opensymphony.xwork2.DefaultActionProxy.debug:57 - Creating an DefaultActionProxy for namespace / and action name index
    [DEBUG] com.opensymphony.xwork2.interceptor.PrefixMethodInvocationUtil.debug:57 - cannot find method [prepareList] in action [com.aurifa.struts2.tutorial.action.EmployeeAction@7a23792b]
    [DEBUG] com.opensymphony.xwork2.interceptor.PrefixMethodInvocationUtil.debug:57 - cannot find method [prepareDoList] in action [com.aurifa.struts2.tutorial.action.EmployeeAction@7a23792b]
    Hibernate: select department0_.departmentId as departme1_1_, department0_.name as name1_ from test2.Department department0_
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.interceptors.SessionTransactionInjectorInterceptor.commitHibernateTransaction:264 - Hibernate Transation  org.hibernate.transaction.JDBCTransaction@54ebb9ba rolledback by Full Hibernate Plugin
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.util.HibernateSessionFactory.closeSession:207 - Hibernate Session closed
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.interceptors.SessionTransactionInjectorInterceptor.closeHibernateSession:275 - Hibernate Session closed by Full Hibernate Plugin's Hibernate Session Factory
    [DEBUG] com.opensymphony.xwork2.config.ConfigurationManager.debug:57 - Checking ConfigurationProviders for reload.
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.interceptors.SessionTransactionInjectorInterceptor.intercept:219 - Hibernate Transaction Committed
    [DEBUG] com.googlecode.s2hibernate.struts2.plugin.interceptors.SessionTransactionInjectorInterceptor.intercept:238 - Injection Hibernate Session and Transaction process for /crud - Method: com.aurifa.struts2.tutorial.action.EmployeeAction.save() finished
    [DEBUG] com.opensymphony.xwork2.interceptor.I18nInterceptor.debug:57 - after Locale=en_US
    [DEBUG] com.opensymphony.xwork2.interceptor.I18nInterceptor.debug:57 - intercept } 

I am probably just missing the above session checking in one of my methods 
which uses the session. However at this point it seems that this can not 
possible be the answer, and I am either doing somthing very wrong or there is 
something missing somewhere.

Attached is the WAR file of this test app (using Struts 2.1.6). Any help will 
be appreciated. 

Thank You

Original issue reported on code.google.com by rwblackb...@gmail.com on 11 Mar 2012 at 5:44

GoogleCodeExporter commented 8 years ago 
The WAR file of my test app is a bit to large to attach to this ticket, let me 
know and I can email it directly.

Original comment by rwblackb...@gmail.com on 11 Mar 2012 at 5:47