力所能及之org.hibernate.LazyInitializationException

浏览数：33 / 时间：2015年06月09日

小狼最近在玩懒加载，出现这个问题

org.hibernate.LazyInitializationException: could not initialize proxy - no Session

   at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:165)
   at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:286)
   at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:185)
   at qh.zcy.entity.User_$$_jvsteb7_0.getUsername(User_$$_jvsteb7_0.java)
   at qh.zcy.entity.test.TestClassGet.testLoadUser(TestClassGet.java:46)
   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)

no session？是什么问题？？

小狼用junit做的测试，并在User.hbm.xml中配置lazy=“true”

	private User loadUser(int id){
		User user=null;
	    try {
			session=HibernateSessionFactory.getSessionFactory().openSession();
			user=(User)session.load(User.class, id);
			//Hibernate.initialize(user);
		} catch (Exception e) {
			// TODO: handle exception
		}finally{
			session.close();
		}
		return user;
	}
@Test
	public void testLoadUser(){
		User user=loadUser(1);
		Log.getLog().info(user.getUsername());
	}

其实很简单，小狼这里使用的是懒加载，即用即加载，而当load方法加载的时候，session的生命周期已经结束，故而报错

怎么解决呢，在调用load方法的下面写一句话