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POGetting ClassNotFoundException when using Hibernate 3.6.3 and just added DefaultPreUpdateEventListener inside Tomcat
 

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  1. POGetting ClassNotFoundException when using Hibernate 3.6.3 and just added DefaultPreUpdateEventListener inside Tomcat
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    <p>I have a problem that has been using Hibernate 3.6.0 for a very long time (or versions around here). This project has been in development since 2009 and has slowly but surely upgraded Hibernate versions. It's been using 3.6.x for some time.</p> <p>I tried upgrading to 3.6.3 to see if it fixed the problem - it didn't. My tests still run.</p> <p>I just recently created an implementation for DefaultPreUpdateEventListener. It works great when I unit test it in IntelliJ. It works when I run the tests in Maven. However, when I run my application in Tomcat, I get this stupid classpath error:</p> <pre><code>Caused by: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [trainingdividend.dao.UpdatedOnEventListener] for bean with name 'trainingdividend.dao.UpdatedOnEventListener#1342f5b' defined in file [C:\Users\egervari\IdeaProjects\trainingdividend-experiment\target\classes\applicationContext.xml]: problem with class file or dependent class; nested exception is java.lang.NoClassDefFoundError: org/hibernate/event/def/DefaultPreUpdateEventListener at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1253) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:433) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:270) ... 118 more Caused by: java.lang.NoClassDefFoundError: org/hibernate/event/def/DefaultPreUpdateEventListener at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632) at java.lang.ClassLoader.defineClass(ClassLoader.java:616) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) at java.net.URLClassLoader.access$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1026) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1483) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1361) at org.springframework.util.ClassUtils.forName(ClassUtils.java:257) at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:408) at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1271) at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1242) ... 120 more Caused by: java.lang.ClassNotFoundException: org.hibernate.event.def.DefaultPreUpdateEventListener at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1516) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1361) ... 136 more </code></pre> <p>This doesn't really make sense. I have had no problems at all running Hibernate up to this point. None. Why is it that all of a sudden I am getting jar hell problems now for? I mean, this works in the unit/integration tests!</p> <p>I really hate these kinds of problems. I'd appreciate it if someone could help. I've spent 2 hours trying to find out what is up, but I see no problem. My maven dependencies look good - it is only loading 1 version of Hibernate.</p> <p>At times like this, I wish I was using Rails. I doubt they ever put up with this crap.</p> <p>Here's my spring configuration of Hibernate:</p> <pre><code>&lt;bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"&gt; &lt;property name="eventListeners"&gt; &lt;map&gt; &lt;entry key="pre-update"&gt; &lt;bean class="trainingdividend.dao.UpdatedOnEventListener" /&gt; &lt;/entry&gt; &lt;/map&gt; &lt;/property&gt; &lt;property name="dataSource" ref="dataSource"/&gt; &lt;property name="mappingResources"&gt; &lt;list&gt; &lt;value&gt;hibernate/coursetemplate.hbm.xml&lt;/value&gt; &lt;value&gt;hibernate/address.hbm.xml&lt;/value&gt; &lt;value&gt;hibernate/user.hbm.xml&lt;/value&gt; &lt;value&gt;hibernate/trainee.hbm.xml&lt;/value&gt; &lt;value&gt;hibernate/company.hbm.xml&lt;/value&gt; &lt;value&gt;hibernate/instructor.hbm.xml&lt;/value&gt; &lt;value&gt;hibernate/module.hbm.xml&lt;/value&gt; &lt;value&gt;hibernate/sysadmin.hbm.xml&lt;/value&gt; &lt;/list&gt; &lt;/property&gt; &lt;property name="namingStrategy"&gt; &lt;bean class="org.hibernate.cfg.ImprovedNamingStrategy"/&gt; &lt;/property&gt; &lt;property name="hibernateProperties"&gt; &lt;props&gt; &lt;prop key="javax.persistence.validation.mode"&gt;none&lt;/prop&gt; &lt;prop key="hibernate.dialect"&gt;${hibernate.dialect}&lt;/prop&gt; &lt;prop key="hibernate.hbm2ddl.auto"&gt;${hibernate.hbm2ddl.auto} &lt;/prop&gt; &lt;prop key="hibernate.generate_statistics"&gt;false&lt;/prop&gt; &lt;prop key="hibernate.show_sql"&gt;false&lt;/prop&gt; &lt;prop key="hibernate.format_sql"&gt;true&lt;/prop&gt; &lt;prop key="hibernate.cache.use_second_level_cache"&gt;false&lt;/prop&gt; &lt;prop key="hibernate.cache.provider_class"&gt; org.hibernate.cache.EhCacheProvider &lt;/prop&gt; &lt;/props&gt; &lt;/property&gt; &lt;/bean&gt; </code></pre>
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