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Thread: ERROR - Context initialization failed

  1. Feb 2nd, 2007, 05:03 AM #1
    lthomas
    lthomas is offline Member
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    Default ERROR - Context initialization failed

    Code:
    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)
    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:
    <?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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  2. Feb 2nd, 2007, 05:08 AM #2
    karldmoore
    karldmoore is offline Senior Member
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    Default

    Is it possible to see the code you are running? Specifically UserServiceImpl and point out which line it's getting the NullPointerException line on.
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  3. Feb 2nd, 2007, 05:12 AM #3
    lthomas
    lthomas is offline Member
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    Default

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

    Code:
    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) {
	}
}
    Same funtionality is working with iFnuService entry
    Code:
    <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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  4. Feb 2nd, 2007, 05:19 AM #4
    karldmoore
    karldmoore is offline Senior Member
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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:
    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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  5. Feb 2nd, 2007, 06:07 AM #5
    lthomas
    lthomas is offline Member
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    Smile

    Thanks it worked!!!
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  6. Feb 2nd, 2007, 06:35 AM #6
    karldmoore
    karldmoore is offline Senior Member
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    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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  7. Feb 2nd, 2007, 06:45 AM #7
    Andreas Senft
    Andreas Senft is offline Senior Member
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    Wink

    Quote Originally Posted by karldmoore View Post
    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 .
    I think this is a very nice and pictorial circumscription of RTFM

    Sorry, could not resist
    Andreas
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  8. Feb 2nd, 2007, 07:03 AM #8
    karldmoore
    karldmoore is offline Senior Member
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    Quote Originally Posted by Andreas Senft View Post
    I think this is a very nice and pictorial circumscription of RTFM
    I'm very innocent and therefore wouldn't have the slightest idea what that stands for .
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