Question

hello friends i created struts with hibernate application when i call SessionFactory sessionFactory =new Configuration().configure().buildSessionFactory();
session =sessionFactory.openSession();
this code is generate error please help me example code is here
this is my hibernate.cfg.xml file

   <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD                  3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
      <hibernate-configuration>
         <session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/logintest</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">xxxx</property>
<property name="connection.pool_size">1</property>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="current_session_context_class">thread</property>
<property name="cache.provider_class">
        org.hibernate.cache.NoCacheProvider
    </property>
<property name="show_sql">true</property>
<property name="hbm2ddl.auto">update</property>
<mapping resource="hibernate.hbm.xml"/>

and my mapping file is here

   <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"   "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 <hibernate-mapping>
    <class name="net.model.Contact" table="contacts">
   <id name="id" type="int" column="id" >
    <generator class="increment"></generator>
</id>   
<property name="firstName" column="firstname"></property>
<property name="lastName" column="lastname"></property>
 <property name="cellNo" column="cell_no"></property>
<property name="emailId" column="email_id"></property>
 <property name="birthDate" column="birthdate"/>
<property name="website" column="website"/>
  </class>
   </hibernate-mapping>

mainclass is here

        public class Testmain {
       public static void main(String args[])
{
    Session session=null;
    try
    {
   SessionFactory sessionFactory =new Configuration().configure().buildSessionFactory();
        session =sessionFactory.openSession();

    Contact contact=new Contact();
   contact.setFirstName("mohan");
  contact.setLastName("raddy");
  contact.setEmailId("[e-mail]");
    contact.setCellNo("4664564564");
   contact.setWebsite("www.stackoverflow.com");
        session.save(contact);
       session.beginTransaction().commit();
      System.out.println("done");


    }catch(Exception e)
    {
    System.out.println(e);
    }




    session.beginTransaction();
    List<Contact> contacts = null;
    try {

        contacts = (List<Contact>)session.createQuery("from Contact").list();

    } catch (HibernateException e) {
        e.printStackTrace();
        session.getTransaction().rollback();
    }
    session.getTransaction().commit();


    for (Contact contact : contacts) {
        System.out.println(contact.getFirstName());
      System.out.println(contact.getLastName());
        System.out.println(contact.getEmailId());
          System.out.println(contact.getCellNo());
            System.out.println(contact.getWebsite());
    }   
   }}

following error showing when i run main class

Exception in thread “main” java.lang.NoSuchMethodError: org.objectweb.asm.ClassWriter.(Z)V
at net.sf.cglib.core.DebuggingClassWriter.(DebuggingClassWriter.java:47)
at net.sf.cglib.core.DefaultGeneratorStrategy.getClassWriter(DefaultGeneratorStrategy.java:30)
at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:24)
at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)
at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:145)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:117)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104)
at net.sf.cglib.proxy.Enhancer.(Enhancer.java:69)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.getProxyFactory(CGLIBLazyInitializer.java:117)
at org.hibernate.proxy.pojo.cglib.CGLIBProxyFactory.postInstantiate(CGLIBProxyFactory.java:43)
at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:162)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.(AbstractEntityTuplizer.java:135)
at org.hibernate.tuple.entity.PojoEntityTuplizer.(PojoEntityTuplizer.java:55)
at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.(EntityEntityModeToTuplizerMapping.java:56)
at org.hibernate.tuple.entity.EntityMetamodel.(EntityMetamodel.java:295)
at org.hibernate.persister.entity.AbstractEntityPersister.(AbstractEntityPersister.java:434)
at org.hibernate.persister.entity.SingleTableEntityPersister.(SingleTableEntityPersister.java:109)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
at org.hibernate.impl.SessionFactoryImpl.(SessionFactoryImpl.java:226)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1294)
at net.model.Testmain.main(Testmain.java:25)
Java Result: 1

Answer 1

Take a look at this answer which suggests that you might be picking up the wrong version of asm.jar You should check your classpath and make sure you don’t have multiple versions installed.