Hibernate： Javassist Enhancement failed

最新推荐文章于 2020-10-11 10:20:59 发布

默一大神

最新推荐文章于 2020-10-11 10:20:59 发布

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分类专栏：运维过程中遇到的问题文章标签： hibernate

本文链接：https://blog.youkuaiyun.com/u012793120/article/details/53612295

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本文分析了一个关于Hibernate懒加载机制的异常案例，该异常源于实体类UserModel未能正确实现无参公共构造方法导致的Javaassist增强失败。文章详细解释了异常堆栈跟踪，并提供了具体的解决方案。

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Exception in thread "main" org.hibernate.HibernateException: Javassist Enhancement failed: com.jerryboom.cache.vo.UserModelat 
org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.getProxy(JavassistLazyInitializer.java:142)at 
org.hibernate.proxy.pojo.javassist.JavassistProxyFactory.getProxy(JavassistProxyFactory.java:71)at 
org.hibernate.tuple.entity.AbstractEntityTuplizer.createProxy(AbstractEntityTuplizer.java:631)at 
org.hibernate.persister.entity.AbstractEntityPersister.createProxy(AbstractEntityPersister.java:3737)at
org.hibernate.event.def.DefaultLoadEventListener.createProxyIfNecessary(DefaultLoadEventListener.java:360)at 
org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:281)at
org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:152)at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:1090)at
org.hibernate.impl.SessionImpl.load(SessionImpl.java:985)at 
org.hibernate.impl.SessionImpl.load(SessionImpl.java:978)at 
com.jerryboom.cache.CacheApp.testLazy(CacheApp.java:62)at 
com.jerryboom.cache.CacheApp.main(CacheApp.java:72)Caused by: 
java.lang.InstantiationException: com.jerryboom.cache.vo.UserModel_$$_javassist_0at 
java.lang.Class.newInstance(Unknown Source)at 
org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.getProxy(JavassistLazyInitializer.java:139)... 11 moreCaused by: java.lang.NoSuchMethodException: com.jerryboom.cache.vo.UserModel_$$_javassist_0.()at 
java.lang.Class.getConstructor0(Unknown Source)... 13 more

对应的实体类中需要添加相应的public修饰的无参构造方法