org.hibernate.service.UnknownUnwrapTypeException: Cannot unwrap to requested type [javax.sql.DataSource]

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    org.hibernate.service.UnknownUnwrapTypeException: Cannot unwrap to requested type [javax.sql.DataSource] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455)
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    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.service.UnknownUnwrapTypeException: Cannot unwrap to requested type [javax.sql.DataSource]
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    org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘transactionManager’ defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.service.UnknownUnwrapTypeException: Cannot unwrap to requested type [javax.sql.DataSource]

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    Root Cause Analysis

    1. org.hibernate.service.UnknownUnwrapTypeException

      Cannot unwrap to requested type [javax.sql.DataSource]

      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean()
    2. Spring Beans
      DefaultListableBeanFactory.preInstantiateSingletons
      1. org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547)
      2. org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
      3. org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
      4. org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
      5. org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
      6. org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
      7. org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
      7 frames
    3. Spring Context
      ClassPathXmlApplicationContext.<init>
      1. org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
      2. org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
      3. org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
      4. org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
      4 frames
    4. cn.spring.hibernate
      PersonTest.test
      1. cn.spring.hibernate.test.PersonTest.test(PersonTest.java:13)
      1 frame
    5. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      4. java.lang.reflect.Method.invoke(Method.java:606)
      4 frames
    6. JUnit
      ParentRunner.run
      1. org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
      2. org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
      3. org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
      4. org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
      5. org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
      6. org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
      7. org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
      8. org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
      9. org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
      10. org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
      11. org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
      12. org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
      13. org.junit.runners.ParentRunner.run(ParentRunner.java:236)
      13 frames
    7. JUnit4 Runner
      JUnit4TestReference.run
      1. org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
      1 frame
    8. JUnit3 Runner
      RemoteTestRunner.main
      1. org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
      2. org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
      3. org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
      4. org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
      5. org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
      5 frames