處理休眠 UnsupportedOperationException：無法寫入只讀對象

Question

我需要設置哪些配置參數或會話首選項來解決這個問題？ 無法寫入只讀對象？ 這是更多信息的堆棧跟蹤：

Caused by: java.lang.UnsupportedOperationException: Can't write to a readonly object
        at org.hibernate.cache.ReadOnlyCache.lock(ReadOnlyCache.java:43)
        at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:85)
        at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248)
        at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:232)
        at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:140)
        at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
        at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
        at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
        at com.mycompany.arch.submission.registry.bean.RegSubmissionSpringService.perform_flush(RegSubmissionSpringService.java:1108)
        at com.mycompany.arch.submission.registry.bean.RegSubmissionSpringService.saveRegistryData(RegSubmissionSpringService.java:1062)
        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:585)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
        at $Proxy145.saveRegistryData(Unknown Source)
        at com.mycompany.arch.submission.registry.bean.RegDataAccessManager.persistRegistry(RegDataAccessManager.java:54)

Answer 1

看看這個博客頁面是否有用：

檢查您的 Hibernate 類映射是否具有 mutable="false"，這會阻止 Hibernate 為現有實例發布更新。 這是我關於這個問題的 Hibernate 論壇線程的鏈接。

Answer 2

對於我們中間的懶惰/愚蠢的人（比如我;））

改變

@Cache(usage = CacheConcurrencyStrategy.READ_ONLY)

進入

@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)

（例如）

（在數據庫類型 pojo 中）

也可能有幫助:)

S。