could not initialize proxy - the owning Session was closed

org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed

    at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:60)

    at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111)

    at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:172)

    at com.sugar.dt.auto.report.imp.model.message.MessageInfoPo$$EnhancerByCGLIB$$a04a24d5.toString(<generated>)

    at java.lang.String.valueOf(Unknown Source)

    at java.io.PrintStream.println(Unknown Source)

    at com.sugar.dt.auto.report.imp.model.param.MessageTest.main(MessageTest.java:40)

上面是问题报错，

解决方法：

由于hibernate采用了lazy=true,这样当你用hibernate查询时,返回实际为利用cglib增强的代理类,但其并没有实际填充;当你在前端,利用它来取值(getXXX)时,这时Hibernate才会到数据库执行查询,并填充对象,但此时如果和这个代理类相关的session已关闭掉,就会产生种错误.有时会出现"could not initialize proxy - clothe owning Session was sed,这个好像是hibernate的缓存问题.问题解决:需要设置lazy="false".