ERROR - Context initialization failed

Code:

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ERROR - Context initialization failed
java.lang.ExceptionInInitializerError
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at org.springframework.util.ClassUtils.forName(ClassUtils.java:87)
        at org.springframework.beans.factory.support.BeanDefinitionReaderUtils.createBeanDefinition(BeanDefinitionReaderUtils.java:62)
        at org.springframework.beans.factory.xml.DefaultXmlBeanDefinitionParser.parseBeanDefinitionElement(DefaultXmlBeanDefinitionParser.java:332)
        at org.springframework.beans.factory.xml.DefaultXmlBeanDefinitionParser.parseBeanDefinitionElement(DefaultXmlBeanDefinitionParser.java:298)
        at org.springframework.beans.factory.xml.DefaultXmlBeanDefinitionParser.parseBeanDefinitions(DefaultXmlBeanDefinitionParser.java:235)
        at org.springframework.beans.factory.xml.DefaultXmlBeanDefinitionParser.registerBeanDefinitions(DefaultXmlBeanDefinitionParser.java:184)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:188)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:146)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:99)
        at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:103)
        at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:71)
        at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:87)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:262)
        at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:80)
        at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:65)
        at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:56)
        at com.palm.util.Context.<clinit>(Context.java:20)
        at com.palm.fnur.service.impl.FnuServiceImpl.<clinit>(FnuServiceImpl.java:21)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at org.springframework.util.ClassUtils.forName(ClassUtils.java:87)
        at org.springframework.beans.factory.support.BeanDefinitionReaderUtils.createBeanDefinition(BeanDefinitionReaderUtils.java:62)
        at org.springframework.beans.factory.xml.DefaultXmlBeanDefinitionParser.parseBeanDefinitionElement(DefaultXmlBeanDefinitionParser.java:332)
        at org.springframework.beans.factory.xml.DefaultXmlBeanDefinitionParser.parseBeanDefinitionElement(DefaultXmlBeanDefinitionParser.java:298)
        at org.springframework.beans.factory.xml.DefaultXmlBeanDefinitionParser.parseBeanDefinitions(DefaultXmlBeanDefinitionParser.java:235)
        at org.springframework.beans.factory.xml.DefaultXmlBeanDefinitionParser.registerBeanDefinitions(DefaultXmlBeanDefinitionParser.java:184)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:188)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:146)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:99)
        at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:115)
        at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:83)
        at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:87)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:262)
        at org.springframework.web.context.support.AbstractRefreshableWebApplicationContext.refresh(AbstractRefreshableWebApplicationContext.java:134)
        at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:230)
        at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:156)
        at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:48)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3212)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:3554)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:774)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:760)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:548)
        at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:260)
        at org.apache.catalina.core.StandardHost.install(StandardHost.java:741)
        at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:512)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:354)
        at org.apache.catalina.startup.HostConfig.start(HostConfig.java:671)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1149)
        at org.apache.catalina.core.StandardHost.start(StandardHost.java:707)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1141)
        at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:316)
        at org.apache.catalina.core.StandardService.start(StandardService.java:450)
        at org.apache.catalina.core.StandardServer.start(StandardServer.java:2143)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:463)
        at org.apache.catalina.startup.Catalina.execute(Catalina.java:350)
        at org.apache.catalina.startup.Catalina.process(Catalina.java:129)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:156)
Caused by: java.lang.NullPointerException
        at com.palm.fnur.service.impl.UserServiceImpl.<clinit>(UserServiceImpl.java:13)

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Please tell me why Iam getting this error. this happens when I add a new entry(marked in below code as bold) in applicationContext.xml:

Code:

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<?xml version="1.0" encoding="UTF-8" ?>
        <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
        "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
                <property name="driverClassName">
                        <value>oracle.jdbc.driver.OracleDriver</value>
                </property>
                <property name="url">
                        <value>jdbc:oracle:thin:@192.168.1.18:1521:regac</value>
                </property>
                <property name="username">
                        <value>fnur</value>
                </property>
                <property name="password">
                        <value>fnur</value>
                </property>
        </bean>


        <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
                <property name="dataSource"><ref bean="dataSource"/></property>
                <property name="mappingResources">
                        <list>
                                <value>com/palm/fnur/model/entities/FnuLookup.hbm.xml</value>
                                <value>com/palm/fnur/model/entities/FnuRedirect.hbm.xml</value>
                                <value>com/palm/fnur/model/entities/BusinessUsers.hbm.xml</value>                               
                                <value>com/palm/fnur/model/entities/FnuAdminUsers.hbm.xml</value>                                               
                                <value>com/palm/fnur/model/entities/FnuHitHistory.hbm.xml</value>       
                                <value>com/palm/fnur/model/entities/FnuPageNotFound.hbm.xml</value>
                                <value>com/palm/fnur/model/entities/FnuHit.hbm.xml</value>
                                <value>com/palm/fnur/model/entities/FnuNotFoundHit.hbm.xml</value>
                        </list>
                </property>
        </bean>

        <bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
                <property name="sessionFactory">
                        <ref bean="sessionFactory"/>
                </property>
        </bean>

        <bean id="fnuDAO" class="com.palm.fnur.dao.impl.FnuDAOImpl">
                <property name="hibernateTemplate">
                        <ref local="hibernateTemplate" />
                </property>
        </bean>
        <bean id="userDAO" class="com.palm.fnur.dao.impl.UserDAOImpl">
                <property name="hibernateTemplate">
                        <ref local="hibernateTemplate"/>
                </property>
        </bean>

        <bean id="catalogPage" class="com.palm.fnur.page.CatalogPage">
          <property name="fnuDAO" ref="fnuDAO"/>
        </bean>
        <bean id="iFnuService" class="com.palm.fnur.service.impl.FnuServiceImpl">
          <property name="fnuDAO" ref="fnuDAO"/>
        </bean>
        <bean id="iUserService" class="com.palm.fnur.service.impl.UserServiceImpl">
          <property name="userDAO" ref="userDAO"/>
        </bean>
</beans>

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Is it possible to see the code you are running? Specifically UserServiceImpl and point out which line it's getting the NullPointerException line on.

this is the code for UserServiceImpl.java :
The line giving error is marked as bold

Code:

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package com.palm.fnur.service.impl;

import java.util.ArrayList;

import com.palm.fnur.dao.IUserDAO;
import com.palm.fnur.service.IUserService;
import com.palm.util.Context;

public class UserServiceImpl implements IUserService {

        private static IUserDAO iUserDAO;
        static {
                iUserDAO = (IUserDAO)Context.getContext().getBean("userDAO");
        }

        public ArrayList getUserlist() {
                return iUserDAO.getUserlist();
        }

        public void setUserDAO(final IUserDAO userDAO) {
        }
}

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Same funtionality is working with iFnuService entry

Code:

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<bean id="iFnuService" class="com.palm.fnur.service.impl.FnuServiceImpl">
          <property name="fnuDAO" ref="fnuDAO"/>
        </bean>
<bean id="iUserService" class="com.palm.fnur.service.impl.UserServiceImpl">
          <property name="userDAO" ref="userDAO"/>
        </bean>

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You are looking up the dependency in a static block, not quite sure why. Spring allows you to inject dependencies, you shouldn't have to look them up like this.
http://www.springframework.org/docs/...tter-injection
http://martinfowler.com/articles/injection.html

Code:

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package com.palm.fnur.service.impl;

import java.util.ArrayList;

import com.palm.fnur.dao.IUserDAO;
import com.palm.fnur.service.IUserService;
import com.palm.util.Context;

public class UserServiceImpl implements IUserService {

        private IUserDAO iUserDAO;

        public ArrayList getUserlist() {
                return iUserDAO.getUserlist();
        }

        public void setUserDAO(final IUserDAO userDAO) {
                this.iuserDAO = userDAO;
        }
}

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Thanks it worked!!!

Ahhh the power of Spring :). I would really recommend having a read through the reference manual and looking at the sample applications. It can save hours of swearing, pulling out of hair and broken keyboards :).

Quote:

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Originally Posted by karldmoore

Ahhh the power of Spring :). I would really recommend having a read through the reference manual and looking at the sample applications. It can save hours of swearing, pulling out of hair and broken keyboards :).

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I think this is a very nice and pictorial circumscription of RTFM ;)

Sorry, could not resist :)
Andreas

Quote:

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Originally Posted by Andreas Senft

I think this is a very nice and pictorial circumscription of RTFM ;)

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I'm very innocent and therefore wouldn't have the slightest idea what that stands for :).