先貼出報錯：

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'auth2Filter' defined in ServletContext resource [/WEB-INF/applicationContext-authz.xml]: Cannot resolve reference to bean 'oauthService' while setting bean property 'oauthService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'oauthService': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'clientDetailsDAO' defined in ServletContext resource [/WEB-INF/applicationContext-dao.xml]: Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext-dao.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: 'configurationClass' must be assignable to [org.hibernate.cfg.Configuration]
?? ?at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328)
?? ?at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106)
?? ?at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1325)
?? ?at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1086)
?? ?at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
?? ?at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
?? ?at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:293)
?? ?at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
?? ?at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:290)
?? ?at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:192)
?? ?at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322)
?? ?... 121 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'oauthService': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'clientDetailsDAO' defined in ServletContext resource [/WEB-INF/applicationContext-dao.xml]: Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext-dao.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: 'configurationClass' must be assignable to [org.hibernate.cfg.Configuration]

我的項目是Eclipse使用JBoss容器啟動一個EJB的老項目（jboss-5.1.0.GA、EJB3.0），啟動后出現上述報錯。通過一天不斷嘗試錯誤，本地解決這個問題。

解決方法：項目中新增四個jar包：hibernate-annotations.jar、hibernate-commons-annotations.jar、hibernate-entitymanager.jar、hibernate-validator.jar。（直接從 jboss-5.1.0.GA\common\lib目錄中獲取）

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如果沒有解決你的問題，可以看看下面的分析，或許對你有啟發！！！

分析問題：

這個報錯是是由hibernate引起，具體原因暫時沒有時間去分析，而且設計底層代碼，難度也比較大，需要花費大量時間。通過平時做項目的經驗，大部分是兩個原因：（1）缺少jar包；（2）jar包沖突。經過分析發現，目錄 jboss-5.1.0.GA\common\lib 下存在hibernate 的jar包，項目部署的war包中也存在部分hibernate的jar包。

第一步：考慮jar包沖突，刪除 jboss-5.1.0.GA\common\lib 中和項目相同的jar包（先備份哈），發現報錯更多了，一堆“NoClassDefFoundError”報錯，沒辦法再把刪掉的jar包一個一個拷回來。最終又全部拷回來了。（這一步比較花時間，需要耐心！）

第二步：考慮缺少jar包，從 jboss-5.1.0.GA\common\lib 中把項目缺少的相關hibernate的jar包拷貝到項目中。如果有沖突就先刪掉，來來回回可能需要嘗試幾遍。我嘗試到這里已經不再報上面的錯誤。新增的jar包有四個：hibernate-annotations.jar、hibernate-commons-annotations.jar、hibernate-entitymanager.jar、hibernate-validator.jar。

第三步：經過第二步后，還是有報錯，又新增了以下jar包：cglib-2.2.jar、asm-3.1.jar。（版本可能需要根據Spring的版本進行調整，我的是Spring3.0.6）

最后算是沒有這個報錯了。