Question

我正在配置我的第一个官方EJB项目的项目设置。我已经在名为Model的单层EJB模块和另一个名为Controller的EJB模块中设置了所有POJO，从那里我试图使用模型模块上的JPA执行从数据库中的简单选择。我没有在JNDI上使用数据源定义，我的所有连接参数都在persistence.xml中设置，当我在模型模块中本地尝试它时工作正常，换句话说，在模型模块上运行一个简单的主方法工作正常与所有POJO一起，但只要我通过无状态SessionBean调用相同的方法就给我以下内容

Exception in thread "main" java.lang.NoClassDefFoundError: org/hibernate/util/xml/Origin
    at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:55)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:55)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:39)
    at com.opus.utils.Hibernate5Test.<init>(Hibernate5Test.java:30)
    at com.opus.utils.Hibernate5Test.newInstance(Hibernate5Test.java:43)
    at com.opus.ejb.beans.TestSessionBean.getRoleById(TestSessionBean.java:24)
    at com.opus.classes.ControllerTest.testing(ControllerTest.java:20)
    at com.opus.classes.ControllerTest.main(ControllerTest.java:26)
Caused by: java.lang.ClassNotFoundException: org.hibernate.util.xml.Origin
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 8 more
Java Result: 1
BUILD SUCCESSFUL (total time: 12 seconds)

我正在使用JBoss 6和MySQL数据库。以下是Stateless SessionBean的代码：

package com.myproject.ejb.beans;

import com.myproject.dao.DAOrole;
import com.myproject.jpa.pojos.Role;
import com.myproject.utils.Hibernate5Test;
import com.myproject.utils.PrintLog;
import javax.ejb.Stateful;

@Stateful
public class TestSessionBean implements TestSessionBeanLocal {

// Add business logic below. (Right-click in editor and choose
// "Insert Code > Add Business Method")
public Object getRoleById(long id){
    PrintLog log = new PrintLog("myproject-ejb");
    Hibernate5Test hib5 = Hibernate5Test.newInstance();
    if(hib5.entityMngr!=null){
        // Test para roles y llaves complejas con Menu
        DAOrole daoRole = new DAOrole(hib5.entityMngr,"testingHib5");
        Role role = daoRole.selectById(id);
        log.println("Hibernate5Test", "main", "testingHib5", role.showInfo());
        return role;
    }
    return null;
}

}

以下是Hibernate Manager的代码：

package com.myproject.utils;
import com.myproject.dao.DAOrole;
import com.myproject.jpa.pojos.Role;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

public class Hibernate5Test {

public EntityManager entityMngr;
public EntityManagerFactory factory;

private static Hibernate5Test hib5 = null;

private Hibernate5Test(){
    try{
        factory = Persistence.createEntityManagerFactory("myproject-Model-PU");
        entityMngr = factory.createEntityManager();
        System.out.println("Connection Succesfull!");
    }
    catch(Exception e){
        e.printStackTrace();
        entityMngr = null;
        System.out.println("Connection failed!");
    }
}

public static Hibernate5Test newInstance(){
    if(hib5 ==null)
        return new Hibernate5Test();
    else
        return hib5;
}

public void close(){
    try{
        System.out.println("Closing Factory and EntityManager...");
        entityMngr.close();
        factory.close();
        System.out.println("Closed.");
    }
    catch(Exception e){
        e.printStackTrace();
    }
}

}

以下是Controller Module上EJB客户端的代码：

package com.myproject.classes;

import com.myproject.ejb.beans.TestSessionBean;
import com.myproject.jpa.pojos.Role;
import javax.ejb.EJB;

public class ControllerTest {
@EJB
TestSessionBean test = new TestSessionBean();

public void testing(long roleId){
    Role role = (Role)test.getRoleById(roleId);
    role.showInfo();
}

public static void main(String[] args){
    ControllerTest test = new ControllerTest();
    test.testing(new Long(1));
}
}

任何帮助都会受到赞赏，也许我误解了EJB的工作方式。

Hibernate-JPA中的NoClassDefFoundError超过EJB无状态Bean

0 个答案: