'Hibernate Mapping Error: MappingException: An AnnotationConfiguration instance
I have a project with Hibernate.I tried to read the configuration file hibernate.cfg and got this error:
Error creando una factoria de session.org.hibernate.MappingException: An AnnotationConfiguration instance is required to use <mapping class="com/david/Categoria"/>
jun 04, 2013 10:19:26 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: El Servlet.service() para el servlet [ControladorLibros] en el contexto con ruta [/App01HTML] lanzó la excepción [La ejecución del Servlet lanzó una excepción] con causa raíz
org.hibernate.MappingException: An AnnotationConfiguration instance is required to use <mapping class="com/david/Categoria"/>
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1524)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1479)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1458)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1432)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1352)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1338)
at com.david.HibernateHelper.buildSessionFactory(HibernateHelper.java:13)
my configuration file is so simple:
<?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="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost/arquitecturajava</property>
<property name="connection.username">root</property>
<property name="connection.password">root</property>
<property name="connection.pool_size">5</property>
<property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>
<property name="show_sql">true</property>
<mapping class="com/david/Categoria"></mapping>
<mapping class="com/david/Libro"></mapping>
</session-factory>
</hibernate-configuration>
don´t accept mapping class lines.
I create de configurations similar to this code:
private static SessionFactory buildSessionFactory()
{
try
{
return new Configuration().configure().buildSessionFactory();
}
catch (Throwable ex)
{
System.err.println("Error creando una factoria de session." + ex);
throw new ExceptionInInitializerError(ex);
}
}
and my project libraries are:
Any idea?
Solution 1:[1]
I think you need the Hibernate Annotation library in your classpath. You can add it manually, downloading it from Hibernate site, or you can add this Maven dependency:
<dependency>
<groupId>hibernate-annotations</groupId>
<artifactId>hibernate-annotations</artifactId>
<version>3.3.0.GA</version>
</dependency>
And then use the class AnnotationConfiguration
instead of Configuration to configure your sessionFactory
.
return new AnnotationConfiguration().configure().buildSessionFactory();
Then you have to correct the qualified name of the class, as @JB Nizet suggested you in his comment.
I think this will solve your problem.
EDIT: sorry, I think you have the annotations library in your classpath, just use the AnnotationConfiguration
class instead of Configuration
when you build your sessionFactory
.
Solution 2:[2]
The problem was of libraries. This is the solutions:
A lot of thankĀ“s to Eternay and JB Nizet.
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
Solution | Source |
---|---|
Solution 1 | eternay |
Solution 2 | Davidin073 |