Sono giorni che non riesco a trovare la soluzione a questo problema. Ho googlato parecchio, ho navigato per mare e per "terra" ma niente. Aiutatemi.
Il problema è il seguente: Sto realizzando un progetto tanto per capire come funziona Hibernate. Ho creato il file di configurazione di hibernate - hibernate.cfg.xml che vi riporto qua sotto:
hibernate.cfg.xml
<?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.connection.driver_class">
com.mysql.jdbc.Driver
</property>
<property name= "hibernate.connection.url">
jdbc:mysql://localhost/videoteca
</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">danilo</property>
<property name="hibernate.connection.pool_size">*****</property>
<property name="show_sql">true</property>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.hbm2ddl.auto">update</property>
<property name="hibernate.transaction.factory_class">
org.hibernate.transaction.JDBCTransactionFactory
</property>
<property name="hibernate.transaction.factory_class">
org.hibernate.transaction.JDBCTransactionFactory
</property>
<mapping resource="all/User.hbm.xml"/>
</session-factory>
</hibernate-configuration>
Nel package all è presente il file User.java e il file Usr.hbm.xml che rispecchiano le caratteristiche della tabella user.
Ora vi riporto il DAO che effettua la sessione
UserDAO
package dao;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import all.User;
public class UserDAO {
private Session session;
public void InsertUserDB(User u){
Transaction tx = null;
try{
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
session = sessionFactory.openSession();
System.out.println("Inserting Record");
tx = session.beginTransaction();
session.save(u);
tx.commit();
System.out.println("Done");
session.flush();
}catch(Exception e){
e.printStackTrace();
tx.rollback();
}
finally{
session.close();
}
}
}
Ora quando faccio partire Tomcat e quando la mia form richiama la Action che richiama a sua volta il metodo InsertUserDB, Tomcat mi manda questa eccezione:
org.hibernate.HibernateException: /hibernate.cfg.xml not found
at org.hibernate.util.ConfigHelper.getResourceAsStrea m(ConfigHelper.java:170)
at org.hibernate.cfg.Configuration.getConfigurationIn putStream(Configuration.java:1439)
at org.hibernate.cfg.Configuration.configure(Configur ation.java:1461)
at org.hibernate.cfg.Configuration.configure(Configur ation.java:1448)
at dao.UserDAO.InsertUserDB(UserDAO.java:26)
at actions.ActionRegistrazioneControl.execute(ActionR egistrazioneControl.java:29)
at org.apache.struts.chain.commands.servlet.ExecuteAc tion.execute(ExecuteAction.java:58)
at org.apache.struts.chain.commands.AbstractExecuteAc tion.execute(AbstractExecuteAction.java:67)
at org.apache.struts.chain.commands.ActionCommandBase .execute(ActionCommandBase.java:51)
at org.apache.commons.chain.impl.ChainBase.execute(Ch ainBase.java:190)
at org.apache.commons.chain.generic.LookupCommand.exe cute(LookupCommand.java:304)
at org.apache.commons.chain.impl.ChainBase.execute(Ch ainBase.java:190)
at org.apache.struts.chain.ComposableRequestProcessor .process(ComposableRequestProcessor.java:283)
at org.apache.struts.action.ActionServlet.process(Act ionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(Acti onServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:803)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11 ConnectionHandler.processConnection(Http11BaseProt ocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.process Socket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThr ead.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)
21-nov-2008 15.39.55 org.apache.struts.chain.commands.AbstractException Handler execute
AVVERTENZA: Unhandled exception
java.lang.NullPointerException
at dao.UserDAO.InsertUserDB(UserDAO.java:40)
at actions.ActionRegistrazioneControl.execute(ActionR egistrazioneControl.java:29)
at org.apache.struts.chain.commands.servlet.ExecuteAc tion.execute(ExecuteAction.java:58)
at org.apache.struts.chain.commands.AbstractExecuteAc tion.execute(AbstractExecuteAction.java:67)
at org.apache.struts.chain.commands.ActionCommandBase .execute(ActionCommandBase.java:51)
at org.apache.commons.chain.impl.ChainBase.execute(Ch ainBase.java:190)
at org.apache.commons.chain.generic.LookupCommand.exe cute(LookupCommand.java:304)
at org.apache.commons.chain.impl.ChainBase.execute(Ch ainBase.java:190)
at org.apache.struts.chain.ComposableRequestProcessor .process(ComposableRequestProcessor.java:283)
at org.apache.struts.action.ActionServlet.process(Act ionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(Acti onServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:803)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11 ConnectionHandler.processConnection(Http11BaseProt ocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.process Socket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThr ead.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)
21-nov-2008 15.39.55 org.apache.struts.chain.commands.ExceptionCatcher postprocess
AVVERTENZA: Exception from exceptionCommand 'servlet-exception'
questo è quanto. Aspetto vostre notizie
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