使用JDK17与eclipselink-2.7.14创建SessionBroker时触发空指针异常

根本原因 #

EclipseLink 2.7.x系列版本不支持JDK17，其内部的JavaSEPlatform类未实现对JDK17及更高版本的版本检测逻辑，导致JavaSEPlatform.CURRENT字段初始化失败，进而触发后续的空指针异常。

解决方案 #

• 升级EclipseLink版本：将EclipseLink升级到3.0.0及以上版本，该系列开始全面支持JDK17及后续版本。
• 降级JDK版本：如果无法升级框架，可将JDK版本降级至11及以下（EclipseLink2.7.x最高支持JDK11）。

错误日志回顾 #

java.lang.ExceptionInInitializerError
    at org.eclipse.persistence.internal.helper.ClassConstants.<clinit>(ClassConstants.java:64)
    at org.eclipse.persistence.internal.identitymaps.AbstractIdentityMap.getDefaultIdentityMapClass(AbstractIdentityMap.java:339)
    at org.eclipse.persistence.sessions.Project.<init>(Project.java:109)
    at org.eclipse.persistence.sessions.Project.<init>(Project.java:198)
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.<init>(DatabaseSessionImpl.java:328)
    at org.eclipse.persistence.sessions.broker.SessionBroker.<init>(SessionBroker.java:59)
Caused by: java.lang.NullPointerException: Cannot invoke "org.eclipse.persistence.internal.helper.JavaSEPlatform.atLeast(org.eclipse.persistence.internal.helper.JavaSEPlatform)" because "org.eclipse.persistence.internal.helper.JavaSEPlatform.CURRENT" is null
    at org.eclipse.persistence.indirection.IndirectCollectionsFactory.getProvider(IndirectCollectionsFactory.java:202)
    at org.eclipse.persistence.indirection.IndirectCollectionsFactory.<clinit>(IndirectCollectionsFactory.java:45)

内容的提问来源于stack exchange，提问作者bunnie