我正在使用 Hibernate 3.6 和 Spring 3.2
当我启动应用程序时，我似乎有一个循环依赖。
我的applicationContext.xml（简化）看起来像这样：
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<bean id="wicketApplication"
class="us.ak.state.revenue.cssd.Personnel.QuickStartApplication" />
<bean id="sessionFactory"
class="us.ak.state.revenue.cssd.Personnel.utils.SessionFactoryBean" >
<property name="configLocation" value="classpath:hibernate.cfg.xml">
</property>
<property name="entityInterceptor">
<ref bean="interceptor" />
</property>
</bean>
<!-- using Annotations -->
<tx:annotation-driven transaction-manager="txManager" />
<!-- setup transaction manager -->
<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<!--
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
-->
</bean>
<bean id="transactionTemplate"
class="org.springframework.transaction.support.TransactionTemplate">
<property name="transactionManager" ref="txManager"/>
</bean>
<!-- List functions that should be Transactional -->
<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="find*" propagation="REQUIRED"/>
<tx:method name="size*" propagation="REQUIRED"/>
<tx:method name="attach*" propagation="REQUIRED"/>
<tx:method name="save" propagation="REQUIRED"/>
<tx:method name="persist" propagation="REQUIRED"/>
<tx:method name="update" propagation="REQUIRED"/>
<tx:method name="merge" propagation="REQUIRED"/>
<tx:method name="delete" propagation="REQUIRED"/>
<tx:method name="onAttach*" propagation="REQUIRED"/>
<tx:method name="onSave" propagation="REQUIRED"/>
<tx:method name="onPersist" propagation="REQUIRED"/>
<tx:method name="onUpdate" propagation="REQUIRED"/>
<tx:method name="onMerge" propagation="REQUIRED"/>
<tx:method name="onDelete" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>
<!-- TODO: look into creating a custom interceptor later -->
<bean id="interceptor" class="org.hibernate.EmptyInterceptor"></bean>
<bean id="AuditDAO" class="us.ak.state.revenue.cssd.dao.AuditDAO" >
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<!-- other DAOs omitted for brevity -->
<context:component-scan base-package="us.ak.state.revenue.cssd" >
<context:include-filter type="assignable"
expression="us.ak.state.revenue.cssd.Personnel.dao.BaseHibernateDAO" />
</context:component-scan>
</beans>
当我尝试运行我的应用程序时，我的错误日志中会出现以下内容：
java.lang.IllegalStateException: Failed to load ApplicationContext
at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:99)
at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:122)
at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:105)
at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:74)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:312)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:211)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:288)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:284)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
at org.junit.runners.Suite.runChild(Suite.java:115)
at org.junit.runners.Suite.runChild(Suite.java:23)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:77)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:195)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'wicketApplication' defined in class path resource [testApplicationContext.xml]:
Unsatisfied dependency expressed through bean property 'iAuditDAO': :
Error creating bean with name 'AuditDAO' defined in class path resource [testApplicationContext.xml]:
Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory';
nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'sessionFactory' defined in class path resource [testApplicationContext.xml]:
Unsatisfied dependency expressed through bean property 'eventListeners': :
Error creating bean with name 'txManager' defined in class path resource [testApplicationContext.xml]:
Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory';
nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException:
Error creating bean with name 'sessionFactory':
FactoryBean which is currently in creation returned null from getObject;
nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'txManager' defined in class path resource [testApplicationContext.xml]:
Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory';
nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException:
Error creating bean with name 'sessionFactory': FactoryBean which is currently in creation returned null from getObject;
nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'AuditDAO' defined in class path resource [testApplicationContext.xml]:
Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory';
nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'sessionFactory' defined in class path resource [testApplicationContext.xml]:
Unsatisfied dependency expressed through bean property 'eventListeners': :
Error creating bean with name 'txManager' defined in class path resource [testApplicationContext.xml]:
Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory';
nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException:
Error creating bean with name 'sessionFactory':
FactoryBean which is currently in creation returned null from getObject; nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'txManager' defined in class path resource [testApplicationContext.xml]:
Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory';
nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException:
Error creating bean with name 'sessionFactory':
FactoryBean which is currently in creation returned null from getObject
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1215)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1107)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
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.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:120)
at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:100)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:248)
at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContextInternal(CacheAwareContextLoaderDelegate.java:64)
at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:91)
... 36 more Caused by: org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'AuditDAO' defined in class path resource [testApplicationContext.xml]:
Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory';
nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'sessionFactory' defined in class path resource [testApplicationContext.xml]:
Unsatisfied dependency expressed through bean property 'eventListeners': :
Error creating bean with name 'txManager' defined in class path resource [testApplicationContext.xml]:
Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory';
nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException:
Error creating bean with name 'sessionFactory':
FactoryBean which is currently in creation returned null from getObject;
nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'txManager' defined in class path resource [testApplicationContext.xml]:
Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory';
nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException:
Error creating bean with name 'sessionFactory':
FactoryBean which is currently in creation returned null from getObject
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:329)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:107)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1393)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1134)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
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.findAutowireCandidates(DefaultListableBeanFactory.java:910)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:853)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:768)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1200)
... 52 more Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'sessionFactory' defined in class path resource [testApplicationContext.xml]:
Unsatisfied dependency expressed through bean property 'eventListeners': :
Error creating bean with name 'txManager' defined in class path resource [testApplicationContext.xml]:
Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory';
nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException:
Error creating bean with name 'sessionFactory':
FactoryBean which is currently in creation returned null from getObject; nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'txManager' defined in class path resource [testApplicationContext.xml]:
Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory';
nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException:
Error creating bean with name 'sessionFactory':
FactoryBean which is currently in creation returned null from getObject
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1215)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1107)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
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.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:323)
... 65 more Caused by: org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'txManager' defined in class path resource [testApplicationContext.xml]:
Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory';
nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException:
Error creating bean with name 'sessionFactory':
FactoryBean which is currently in creation returned null from getObject
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:329)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:107)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1393)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1134)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
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.findAutowireCandidates(DefaultListableBeanFactory.java:910)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:840)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:768)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1200)
... 73 more Caused by:
org.springframework.beans.factory.BeanCurrentlyInCreationException:
Error creating bean with name 'sessionFactory':
FactoryBean which is currently in creation returned null from getObject
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:156)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:109)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1448)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:249)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:323)
... 86 more
那么如何更正我的applicationContext.xml以更正错误？
更新
根据@kaviddiss的建议，我正在添加有关SessionFactoryBean的详细信息
public class SessionFactoryBean extends LocalSessionFactoryBean它所做的就是
@Override newConfiguration()检查服务器运行情况并设置数据库连接字符串和日志级别（调试与信息）。
我以为我已经从<beans ...>中进行了自动装配我是否需要明确将其设置为关/禁用？
答案 0 :(得分：1)
除了xml配置，您还配置了自动装配，这两个可能会创建循环依赖。堆栈指的是可能导致问题的bean属性eventListener。您可能希望在us.ak.state.revenue.cssd.Personnel.utils.SessionFactoryBean类中包含更多详细信息以获取更多帮助。您还可以尝试注释掉XML配置的某些部分和/或一些自动装配注释，直到您弄清楚如何打破循环依赖。
答案 1 :(得分：1)
从XML中删除Hibernate实体拦截器配置。它可能被TX AOP拾取，从而导致循环依赖（通过txManager）。
稍后当你创建自己的拦截器时，不要忘记添加AopInfrastructureBean接口，这样它就不会成为AOP包装的主题。
UPDATE 我刚刚意识到XML中没有切入点定义，并且正在使用<tx:annotation-driven>（即AOP基于@Transactional注释）。这意味着我的回答不正确。