the valid jpa update entity code gives the exception below in the case of  wrong dependency( org.hibernate,  hibernate-core,  4.2.0.CR1) entityManager.getTransaction().begin();         CompactDisc compactDisc = entityManager.find(CompactDisc.class, 7…

使用JPA保存对象时报nested exception is javax.persistence.RollbackException: Transaction marked as rollbackOnly错误 刚开始以为是数据库中的表有问题,主键的字段不能为空,结果给它赋值了还是不行,再一看数据库中有些非空的字段没有设值,又改了 一下表的结构,允许为空,结果还是报错.再一想是不是因为实体类实现了序列化的原因,把序列化给注释了还是不行,最后回想到在生 成实体类的时候有四个字段改成了Serializ…

WebSphere 7 & Javax/Persistence/OneToMany.OrphanRemoval() Error 文章出处:http://www.mkyong.com/websphere/websphere-7-javaxpersistenceonetomany-orphanremoval-error/ Problem In Hibernate development, contains a model class with JPA @OneToMany annotation :…

Could not open JPA EntityManager for transaction; nested exception is javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: Cannot open connection 检查一下 数据源 配置, 看你的异常应该是 使用 JTA 事物 ,容器没有实例化 EntityManager <?xml version="…

进行 spring mvc jpa整合时.Junit方法测试时. 异常: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested excep…

1.错误描述 WARN:2015-05-01 16:45:37[main] - Exception encountered during context initialization - cancelling refresh attempt org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'baseDaoImpl': Injection of resource depen…

1.错误描述 2014-7-12 21:06:37 org.hibernate.engine.jdbc.internal.LobCreatorBuilder useContextualLobCreation INFO: HHH000422: Disabling contextual LOB creation as connection was null 2014-7-12 21:06:37 org.springframework.web.context.ContextLoader initWeb…

1.错误描述 usage: java org.apache.catalina.startup.Catalina [ -config {pathname} ] [ -nonaming ] { -help | start | stop } 2014-7-12 19:41:17 org.apache.catalina.core.AprLifecycleListener init 信息: Loaded APR based Apache Tomcat Native library 1.1.29 using…

Caused by: javax.persistence.NonUniqueResultException: result returns more than one elements at org.hibernate.jpa.internal.QueryImpl.getSingleResult(QueryImpl.java:492) at org.hibernate.jpa.criteria.compile.CriteriaQueryTypeQueryAdapter.getSingleResu…

在使用 Hibernate 进行数据库操作的时候,在启动 Tomcat 服务器后,Console 控制台可能会打印出这样的异常:java.lang.NoClassDefFoundError: javax/persistence/EntityListeners 一.异常描述: 严重: Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean w…