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POspring + hibernate class not found
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  1. POspring + hibernate class not found
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    copied!<p>I have a simple web application that I am trying to get running and am having problems. I migrated a Java EE 6 application to Spring. It appears hibernate starts fine, but when Spring attempts to create a named bean that refers to an entity, I get ClassNotFoundException.</p> <p>Any ideas why a jar inside WEB-INF/lib of the WAR is not being seen by spring? Am I having some sort of proxying issue?</p> <p>Let me know what files you would like to see snippets of, if any.</p> <p>EDIT: stack trace attached - I modified the fully qualified class names, in the stack trace for brevity. I also attached my spring beans configuration. Also, FYI, my entity classes are all in different jar files (by design). I believe that is causing some problems, but am not sure why.</p> <pre><code>n]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: api/model/principal/Group at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1011) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:957) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:490) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:626) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:389) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:294) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:722) Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [server.administration.GroupExampleBean]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: api/model/principal/Group at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:163) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1004) ... 23 more Caused by: java.lang.NoClassDefFoundError: api/model/principal/Group at server.administration.GroupExampleBean.&lt;init&gt;(GroupExampleBean.java:20) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:525) at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:148) ... 25 more Caused by: java.lang.ClassNotFoundException: api.model.principal.Group at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559) ... 31 more </code></pre> <p>My Spring application context:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jpa="http://www.springframework.org/schema/jpa" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd http://www.springframework.org/schema/jpa http://www.springframework.org/schema/jpa/spring-jpa-3.2.xsd"&gt; &lt;jpa:repositories base-package="examples" /&gt; &lt;context:component-scan base-package="examples"/&gt; &lt;context:annotation-config/&gt; &lt;bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"&gt; &lt;property name="dataSource" ref="dataSource"/&gt; &lt;property name="jpaVendorAdapter"&gt; &lt;bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"&gt; &lt;property name="generateDdl" value="true" /&gt; &lt;property name="database" value="HSQL" /&gt; &lt;property name="databasePlatform" value="org.hibernate.dialect.HSQLDialect" /&gt; &lt;/bean&gt; &lt;/property&gt; &lt;property name="persistenceUnitName" value="persistenceUnit" /&gt; &lt;/bean&gt; &lt;bean id="transactionMa## Heading ##nager" class="org.springframework.orm.jpa.JpaTransactionManager"&gt; &lt;!--&lt;property name="entityManagerFactory" ref="entityManagerFactory"/&gt;--&gt; &lt;/bean&gt; &lt;!-- can be: HSQL/H2/Derby --&gt; &lt;jdbc:embedded-database id="dataSource" type="HSQL"/&gt; &lt;tx:annotation-driven transaction-manager="transactionManager" /&gt; &lt;!-- For some reason the annotations are not being picked up yet --&gt; &lt;!--&lt;bean id="startupListener" class="examples.web.application.StartupListener"/&gt;--&gt; &lt;!-- Spring will manage the JPA Listeners &lt;jpa:auditing auditor-aware-ref="auditorAware" /&gt; &lt;bean id="auditorAware" class="org.springframework.data.jpa.example.auditing.AuditorAwareImpl" /&gt; --&gt; &lt;!-- &lt;jpa:repositories base-package="org.springframework.data.jpa.example.repository.simple" /&gt; --&gt; &lt;/beans&gt; </code></pre> <p>Thanks,</p> <p>Walter</p>
 

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