I have a problem when I get an object from hibernate. The stacktrace is:
org.hibernate.InstantiationException: Could not instantiate entity: main.java.com.gwt.app.server.User
at org.hibernate.tuple.PojoInstantiator.instantiate(PojoInstantiator.java:114)
at org.hibernate.tuple.PojoInstantiator.instantiate(PojoInstantiator.java:123)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.instantiate(AbstractEntityTuplizer.java:603)
at org.hibernate.persister.entity.AbstractEntityPersister.instantiate(AbstractEntityPersister.java:3911)
at org.hibernate.impl.SessionImpl.instantiate(SessionImpl.java:1422)
at org.hibernate.impl.SessionImpl.instantiate(SessionImpl.java:1411)
at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:1446)
at org.hibernate.loader.Loader.getRow(Loader.java:1355)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:611)
at org.hibernate.loader.Loader.doQuery(Loader.java:829)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:274)
at org.hibernate.loader.Loader.loadEntity(Loader.java:2037)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:86)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:76)
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3293)
at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:496)
at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:477)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:227)
at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:285)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:152)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:1090)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:1005)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:998)
at main.java.com.gwt.app.server.User.loadUser(User.java:50)
at main.java.com.gwt.app.server.GreetingServiceImpl.greetServer(GreetingServiceImpl.java:22)
at main.java.com.gwt.app.client.Main.main(Main.java:11)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.hibernate.tuple.PojoInstantiator.instantiate(PojoInstantiator.java:111)
... 25 more
Caused by: java.lang.NoClassDefFoundError: org.springframework.beans.FatalBeanException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:965)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:911)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:900)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:455)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:93)
at main.java.com.gwt.app.server.User.<init>(User.java:33)
... 30 more
My User.hbm.xml file is:
<hibernate-mapping package="main.java.com.gwt.app.server">
<class name="User" table="USR">
<id column="login" name="login" type="java.lang.String"/>
<property column="password" name="password" type="java.lang.String"/>
</class>
</hibernate-mapping>
and User class:
package main.java.com.gwt.app.server;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.core.io.ClassPathResource;
public class User {
private String login;
private String password;
private SessionFactory sesionFactory;
private Session sesion;
public void setSesionFactory(SessionFactory sesionFactory){
this.sesionFactory = sesionFactory;
this.sesion = this.sesionFactory.openSession();
}
public User(String user, String pass) {
ClassPathResource res = new ClassPathResource("resources/spring.xml");
XmlBeanFactory factory = new XmlBeanFactory(res);
this.sesionFactory = (SessionFactory)factory.getBean("sessionFactory");
this.sesion = this.sesionFactory.openSession();
this.login = user;
this.password = pass;
}
public User() {
}
public String getLogin() {
return login;
}
public void setLogin(String login) {
this.login = login;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String loadUser(String log){
return ((User)sesion.get(User.class, log)).getLogin();
}
}
And I reference in spring file to mapping file:
<property name="mappingResources">
<list>
<value>
User.hbm.xml
</value>
</list>
</property>
The libraries that I use:
hibernate3.jar
org.springframework.aop-3.1.0.M1.jar
org.springframework.asm-3.1.0.M1.jar
org.springframework.aspects-3.1.0.M1.jar
org.springframework.beans-3.1.0.M1.jar
org.springframework.context-3.1.0.M1.jar
org.springframework.context.support-3.1.0.M1.jar
org.springframework.core-3.1.0.M1.jar
org.springframework.expression-3.1.0.M1.jar
org.springframework.instrument-3.1.0.M1.jar
org.springframework.instrument.tomcat-3.1.0.M1.jar
org.springframework.jdbc-3.1.0.M1.jar
org.springframework.jms-3.1.0.M1.jar
org.springframework.orm-3.1.0.M1.jar
org.springframework.oxm-3.1.0.M1.jar
org.springframework.transaction-3.1.0.M1.jar
hibernate-validator-4.0.2.GA.jar
validation-api-1.0.0.GA.jar
So, I do not know why is the reason which returns the error. I need help
Thanks!
Maybe you don’t have default public constructor in your class or maybe (I don’t use .hbm files rather annotations) class name in User.hbm.xml class name should be fully qualified?
Please, post your User class code.