org.hibernate.MappingException: Unknown entity:

[Jitesh Sinha]

Hi All,

I am stuck on this problem for last several hours.I have tried looking everywhere but this problem would not go away.
Here is my entity class :-

package com.abc.zbl.entities;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import javax.xml.bind.annotation.XmlRootElement;


@Entity
@Table(name = "ZBL_USER_FILTER")
@SequenceGenerator(name = "Zuf_Gen", sequenceName = "ZUF_ID_SEQUENCE")
@XmlRootElement
public class ZblUserFilter {
	
	
	@Id
	@GeneratedValue(generator = "Zuf_Gen")
	@Column(name = "ZUF_ID")
	private long zufId ;
	
	
	  @Column(name="USER_NAME") 
	private String userName ;
	
	@Column(name = "FILTER", length = 3000)
	private String filter ;

	public long getZufId() {
		return zufId;
	}

	public void setZufId(long zufId) {
		this.zufId = zufId;
	}

	

	public String getFilter() {
		return filter;
	}

	public void setFilter(String filter) {
		this.filter = filter;
	}

	public String getUserName() {
		return userName;
	}

	public void setUserName(String userName) {
		this.userName = userName;
	}
	
	
	
	

}

Here is applicationContext.xml :-

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:task="http://www.springframework.org/schema/task"
       xsi:schemaLocation="
       http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context-3.0.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
       http://www.springframework.org/schema/task
       http://www.springframework.org/schema/task/spring-task-3.0.xsd">

    <context:annotation-config/>

    <context:component-scan base-package="com.abc.zbl"/>

    
   
     <bean id="dataSource" class="com.abc.zbl.dao.ZblDataSource">       
     	
	 </bean>
    
    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
        <property name="dataSource"><ref local="dataSource"/></property>
        <property name="packagesToScan"  value="com.abc.zbl.entities" />
        <property name="configurationClass">
            <value>org.hibernate.cfg.AnnotationConfiguration</value>
        </property>
        <property name="annotatedClasses">
            <list>
               <value>com.abc.zbl.entities.User</value>
    			<value>com.abc.zbl.entities.PageView</value>
    			<value>com.abc.zbl.entities.PageEvent</value>
    			<value>com.abc.zbl.entities.ZblFilterMapping</value>
    			<value>com.abc.zbl.entities.ZblRuleMapping</value>
    			<value>com.abc.zbl.entities.ZblUserFilter</value>
    		</list>
    </property>
     <property name="hibernateProperties">
            <props>
                <!--prop key="hibernate.hbm2ddl.auto">validate</prop -->
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.dialect">
                    org.hibernate.dialect.Oracle9Dialect
                </prop>
                <prop key="hibernate.default_schema">zbluser_admin</prop>
                 <prop key="hibernate.connection.driver_class">oracle.jdbc.OracleDriver</prop>
      			<prop key="hibernate.connection.password">xxxxxxx</prop>
      			<prop key="hibernate.connection.url">jdbc:oracle:thin:@xxx:xxx:xxxxx</prop>
      			<prop key="connection.pool_size">20</prop>
      			
                </props>
                </property>
                

		</bean>
		
		
	<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass"><value>org.springframework.web.servlet.view.JstlView</value></property>
        <property name="prefix"><value>/WEB-INF/jsp/</value></property>
        <property name="suffix"><value>.jsp</value></property>
    </bean>
    
</beans>

Java code that is giving problem is here :-

@Service(value = "zblServiceImpl")
@Transactional
public class ZblServiceImpl implements ZblService {
	
    @Autowired
    protected UserDao userDao;
    
    @Autowired
    protected FilterDao filterDao;
    
    @Autowired
    protected ZblDao zblDao;
    	

	@Override
	public String saveFilters(String userName,String filters)
	{
		ZblUserFilter filter = new ZblUserFilter() ;
		
		filter.setUserName(userName) ;
		
		filter.setFilter(filters) ;
		
		filterDao.persist(filter) ;
		
		return "true" ;
		
	}
}

error comes on filterDao.persist(filter) ;

persist method has this code snippet :-

  @Override
    public T persist(T o) {
    	super.getHibernateTemplate().persist(o);
    	
        return o;
    }

Here is the exception stack trace :-

org.hibernate.MappingException: Unknown entity: com.abc.zbl.entities.ZblUserFilter
	at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:550)
	at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1338)
	at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:180)
	at org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:512)
	at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:70)
	at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:38)
	at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:618)
	at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:592)
	at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:596)
	at org.springframework.orm.hibernate3.HibernateTemplate$21.doInHibernate(HibernateTemplate.java:796)
	at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406)
	at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
	at org.springframework.orm.hibernate3.HibernateTemplate.persist(HibernateTemplate.java:793)
	at com.abc.zbl.dao.GenericDaoImpl.persist(GenericDaoImpl.java:58)
	at com.abc.zbl.service.ZblServiceImpl.saveFilters(ZblServiceImpl.java:68)
	at com.abc.zbl.controller.ZblFilterController.saveFilters(ZblFilterController.java:35)

Can someone please help?Thanks!

[Jitesh Sinha]

It seems spring reads projectname-servlet.xml.It does not read applicationContext.xml even if it is mentioned in web.xml .
How does it work?I am totally confused.

[Vijitha Kumara]

Can you post the relevant part(s) of the web.xml? Where's your applicationContext.xml is located in the deployed application? Is this happens to any other annotated beans or only for this?

[Jitesh Sinha]

It happens with all annotated beans.applicationContext.xml is under WEB-INF/classes. Here is web.xml :-

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>ZBL</display-name>

  
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
			classpath:applicationContext-Ajax.xml
			classpath:applicationContext.xml
        </param-value>
  </context-param>
  
  
  
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  
	
  	
  
  
<servlet>
		<servlet-name>zbl</servlet-name>
		 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<load-on-startup>1</load-on-startup>
   </servlet>
   
   <servlet>
        <servlet-name>dwr-invoker</servlet-name>
        <servlet-class>org.directwebremoting.spring.DwrSpringServlet</servlet-class>
        <init-param>
            <param-name>debug</param-name>
            <param-value>true</param-value>
        </init-param>
    </servlet>
  
  <servlet-mapping>
      <servlet-name>zbl</servlet-name>
       <url-pattern>*.do</url-pattern>
    </servlet-mapping>
    
  <servlet-mapping>
    <servlet-name>zbl</servlet-name>
    <url-pattern>/service/*</url-pattern>
  </servlet-mapping>
  
  <servlet-mapping>
        <servlet-name>dwr-invoker</servlet-name>
        <url-pattern>/dwr/*</url-pattern>
    </servlet-mapping>
  
  
  <jsp-config>
    <taglib>
      <taglib-uri>http://java.sun.com/jsp/jstl/core</taglib-uri>
      <taglib-location>/WEB-INF/tags/c.tld</taglib-location>
    </taglib>
    <taglib>
    <taglib-uri>/spring</taglib-uri>
    <taglib-location>/WEB-INF/spring.tld</taglib-location>
  </taglib>
    
  </jsp-config>
  
   <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
    
  </welcome-file-list>
  
</web-app>