OpenJPA

OpenJPA 是 Apache 组织提供的开源项目,它实现了 EJB 3.0 中的 JPA 标准,为开发者提供功能强大、使用简单的持久化数据管理框架。OpenJPA 封装了和关系型数据库交互的操作,让开发者把注意力集中在编写业务逻辑上。

OpenJPA 抛出 The type class xxx has not been enhanced 错误

本文将解决 OpenJPA 抛出 The type class xxx has not been enhanced 错误。

OpenJPA FailedObject: * [org.apache.openjpa.util.IntId] [java.lang.String] 错误

Exception in thread "main" <openjpa-2.4.2-r422266:1777108 nonfatal general error> org.apache.openjpa.persistence.PersistenceException: null FailedObject: 351 [org.apache.openjpa.util.IntId] [java.lang.String]

OpenJPA抛出 The type * has not been enhanced 错误

本文将介绍怎样处理JPA抛出的“org.apache.openjpa.util.MetaDataException: The type "class com.huangx.openjpa.model.User" has not been enhanced.”错误。

严重 org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19

严重: Unable to process Jar entry [module-info.class] from Jar [jar:file:/E:/workspaces/safety/safety/app_server/target/app_server/WEB-INF/lib/lombok-1.16.22.jar!/] for annotations org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19

解决JPA “Null value was assigned to a property of primitive type setter of” 异常

org.springframework.orm.jpa.JpaSystemException: Null value was assigned to a property of primitive type setter of com.huangx.model.entity.User.userId; nested exception is org.hibernate.PropertyAccessException: Null value was assigned to a property of primitive type setter of com.huangx.model.entity.User.userId 错误信息

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