No CurrentSessionContext configured ------Hibernate

在使用Hibernate中使用session = sf.getCurrentSession()时出现异常

01.org.hibernate.HibernateException: No CurrentSessionContext configured!   
 02.    at org.hibernate.impl.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:698)   
 03.    at cn.neilone.test.TeacherTest.T1(TeacherTest.java:35)   
 04.    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)   
 05.    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)   
 06.    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)   
 07.    at java.lang.reflect.Method.invoke(Method.java:597)   
 08.    at org.junit.internal.runners.TestMethodRunner.executeMethodBody(TestMethodRunner.java:99)   
 09.    at org.junit.internal.runners.TestMethodRunner.runUnprotected(TestMethodRunner.java:81)   
 10.    at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)   
 11.    at org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75)   
 12.    at org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45)   
 13.    at org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:66)   
 14.    at org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:35)   
 15.    at org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42)   
 16.    at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)   
 17.    at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)   
 18.    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)   
 19.    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)   
 20.    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)   
 21.    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)   
 22.    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)   
 23.    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)  

原因是hibernate.cfg.xml中没有配置正确,如果是web应用增加配置

<property name="current_session_context_class">jta</property>  

如果是Java应用,增加如下配置

<property name="current_session_context_class">thread</property>