_$$_javassist_1 cannot be cast to javassist.util.proxy.Proxy异常

hibernate的级联查询测试代码：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:applicationContext.xml")
public class Mytest {
@Resource
private CategoryService categoryService;
@Test
public void testQueryJoinAccount(){
for(Category c:categoryService.queryJoinAccount("装")){
System.out.println(c);
System.out.println(c.getAccount());
}
}
}

报错结果：

Hibernate: select category0_.id as id1_1_, category0_.aid as aid4_1_, category0_.hot as hot2_1_, category0_.type as type3_1_ from category category0_ where category0_.type like ?

22:02:12.553 [main] ERROR org.hibernate.proxy.pojo.javassist.JavassistProxyFactory - HHH000142: Javassist Enhancement failed: com.model.Account

java.lang.ClassCastException: com.model.Account_$$_javassist_1 cannot be cast to javassist.util.proxy.Proxy

原因：ManyToOne中即多的一方启用的fetch抓取策略是懒加载FetchType.LAZY

         One的一方启用的fetch抓取策略是立即加载FetchType.EAGER

 

 

在JPA的hibernate级联查询中：保持Many的一方为立即加载，错误立马解决

PS：我也不知道为什么，只是无意中改成这样子就成功了！