java.lang.NullPointerException at org.hibernate.util.ConfigHelper.getResourceAsStream(ConfigHelper.

[Jeetu Das]

Hi I am getting the following error , while reading the hibernate.config.xml file .
Please help .


HTTP Status 500 -

--------------------------------------------------------------------------------

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Servlet execution threw an exception


root cause

java.lang.ExceptionInInitializerError
org.hibernate.cfg.Configuration.reset(Configuration.java:330)
org.hibernate.cfg.Configuration.<init>(Configuration.java:296)
org.hibernate.cfg.Configuration.<init>(Configuration.java:300)
com.jitu.core.HibernateUtil.sessionFactory(HibernateUtil.java:11)
com.jitu.http.server.CreateUserServlet.doPost(CreateUserServlet.java:41)
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


root cause

java.lang.NullPointerException
org.hibernate.util.ConfigHelper.getResourceAsStream(ConfigHelper.java:167)
org.hibernate.cfg.Environment.<clinit>(Environment.java:608)
org.hibernate.cfg.Configuration.reset(Configuration.java:330)
org.hibernate.cfg.Configuration.<init>(Configuration.java:296)
org.hibernate.cfg.Configuration.<init>(Configuration.java:300)
com.jitu.core.HibernateUtil.sessionFactory(HibernateUtil.java:11)
com.jitu.http.server.CreateUserServlet.doPost(CreateUserServlet.java:41)
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


note The full stack trace of the root cause is available in the Apache Tomcat/6.0.35 logs.


--------------------------------------------------------------------------------

Apache Tomcat/6.0.35

[Hemant Thard]

Hi,

Please post your cfg.xml file.

With this information, it will be difficult for us to predict what can be wrong in your code.

Regards,
Hemant

[Jeetu Das]

HI ..Thanks for the reply .

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">oracle.jdbc.driver.OracleDriver</property>

<property name="hibernate.connection.url">jdbcracle:thin:@TRAINHR1011:1521:RETAILS</property>

<property name="hibernate.connection.username">fcr</property>

<property name="hibernate.connection.password">fcr</property>

<property name="hibernate.connection.pool_size">1</property>

<property name="hibernate.dialect">org.hibernate.dialect.OracleDialect</property>

<property name="show_sql">true</property>

<property name="hibernate.hbm2ddl.auto">update</property>

<!-- Mapping files -->



</session-factory>

</hibernate-configuration>



I have added some jars in the class path , now i am getting the following error :

java.lang.ExceptionInInitializerError
org.hibernate.cfg.Configuration.reset(Configuration.java:330)
org.hibernate.cfg.Configuration.<init>(Configuration.java:296)
org.hibernate.cfg.Configuration.<init>(Configuration.java:300)
com.jitu.core.HibernateUtil.sessionFactory(HibernateUtil.java:11)
com.jitu.http.server.CreateUserServlet.doPost(CreateUserServlet.java:41)
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


root cause

java.lang.NullPointerException
org.hibernate.util.ConfigHelper.getResourceAsStream(ConfigHelper.java:167)
org.hibernate.cfg.Environment.<clinit>(Environment.java:608)
org.hibernate.cfg.Configuration.reset(Configuration.java:330)
org.hibernate.cfg.Configuration.<init>(Configuration.java:296)
org.hibernate.cfg.Configuration.<init>(Configuration.java:300)
com.jitu.core.HibernateUtil.sessionFactory(HibernateUtil.java:11)
com.jitu.http.server.CreateUserServlet.doPost(CreateUserServlet.java:41)
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)




Please help me .

[Jeetu Das]

May 24, 2012 6:14:33 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet CreateUserServlet threw exception
java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.cfg.Environment
at org.hibernate.cfg.Configuration.reset(Configuration.java:330)
at org.hibernate.cfg.Configuration.<init>(Configuration.java:296)
at org.hibernate.cfg.Configuration.<init>(Configuration.java:300)
at com.jitu.core.HibernateUtil.sessionFactory(HibernateUtil.java:11)
at com.jitu.http.server.CreateUserServlet.doPost(CreateUserServlet.java:41)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)

[Manuel Petermann]

Just posting stack traces isnt going to give us a clue what went wrong when you don't tell us what you did to get them... I assume you didnt add hibernate correctly to your classpath. But this is as good a guess as any.

[Jeetu Das]

Hello Sir,

I want to do a application which simply interact with DB and fetch the Data with a hibernate .

The settng i have done as follows :

Classpath : D:\oracle\product\10.2.0\client\jdbc\lib\classes12.jar;D:\oracle\product\10.2.0\client\jdbc\lib\ojdbc14.jar;D:\Software\ThirdPartyJard\ExternalJars\slf4j-api-1.6.1;D:\Software\ThirdPartyJard\ExternalJars\log4j.jar;D:\Software\ThirdPartyJard\ExternalJars\hibernate3.jar;


Includedthe following jars in bin and apache tomcat server .

1)slf4j-log4j12-1.6.1
2)slf4j-api-1.6.1
3)log4j
4)hibernate-jpa-2.0-api-1.0.0.Final
5)hibernate3

My Hibernate.cfg.xml file as below
<?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">oracle.jdbc.driver.OracleDriver</property> <property name="hibernate.connection.url">jdbc:oracle:thin:@TRAINHR1011:1521:RETAILS</property> <property name="hibernate.connection.username">fcr</property> <property name="hibernate.connection.password">fcr</property> <property name="hibernate.connection.pool_size">1</property> <property name="hibernate.dialect">org.hibernate.dialect.OracleDialect</property> <property name="show_sql">true</property> <property name="hibernate.hbm2ddl.auto">update</property> <!-- Mapping files --> <mapping resource="Book.hbm.xml"/> </session-factory> </hibernate-configuration>


My Hibernate Until Class :

package com.jitu.core;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HibernateUtil {
	
	public Session sessionFactory(){	
	System.out.println("Jiut");
	
	//Configuration cfg = new Configuration().configure("Hibernate.cfg.xml");
	Configuration cfg = new Configuration().addResource("com/jitu/core/Book.hbm.xml")
						.setProperty("hibernate.dialect", "org.hibernate.dialect.HSQLDialect")
						.setProperty("hibernate.connection.driver_class", "oracle.jdbc.driver.OracleDrive")
						.setProperty("hibernate.connection.url", "jdbc:oracle:thin:@TRAINHR1011:1521:RETAILS")
						.setProperty("hibernate.connection.username", "fcr")
						.setProperty("hibernate.connection.password", "fcr");
	SessionFactory sessionFactry = cfg.buildSessionFactory();
	Session session = sessionFactry.getCurrentSession();
	return session;
	}
}

I have put my cfg file inside my package .

If you need more information , please let me know .