LocalSessionFactoryBean说明

最新推荐文章于 2019-08-07 09:32:22 发布

转载最新推荐文章于 2019-08-07 09:32:22 发布 · 617 阅读

文章标签：

#spring #hibernate #SessionFactory #LocalSessionFactory

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今天在applicationContext.xml中配置sessionFactory后，编了个测试类测试时出错，代码如下：

1。bean

<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
		<property name="dataSource">
			<ref bean="dataSource"/>
		</property>
</bean>

2.测试代码

ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
org.springframework.orm.hibernate4.LocalSessionFactoryBean sf =  (<pre name="code" class="java">LocalSessionFactoryBean ) ac.getBean("sessionFactory");

测试错误信息：

java.lang.ClassCastException: org.hibernate.internal.SessionFactoryImpl cannot be cast to org.springframework.orm.hibernate4.LocalSessionFactoryBean
	at cn.edu.ncist.qwqx.test.TestDataSource.test1(TestDataSource.java:27)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
	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.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:73)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
	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.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

在网上查了资料了解到LocalSessionFactoryBean 本身不是一个session factory，但是spring会自动把对这个bean的引用替换成LocalSessionFactoryBean 里面的真正的session factory。 LocalSessionFactoryBean部分源码

    public class LocalSessionFactoryBean implements FactoryBean, InitializingBean, DisposableBean {     
        
        private SessionFactory sessionFactory;     
        
        public Object getObject(); {     
            return this.sessionFactory;     
        }

原文：http://blog.youkuaiyun.com/lucklq/article/details/7562060