问题描述
当我的应用程序发生乐观并发问题时，StaleObjectStateException正在我的应用程序中抛出，而不是在OptimisticLockException（我读我应该期望这个）。无需发布代码，因为它是最基本的并发问题 - 时间戳列中的错误版本。
A StaleObjectStateException is being thrown in my app instead of OptimisticLockException (as I read I should expect this one) when optimistic concurrency problem occurs in my app. No need to post code, as it's the most basic concurrency problem - wrong version in a timestamp column.
我应该如何获取OptimisticLockException，而不是另一个？ / p>
How am I supposed to get OptimisticLockException, not the other one?
推荐答案
当使用直接的hibernate API时，会抛出StaleObjectStateException。如果你使用JPA风格的hibernate，会抛出OptimisticLockException。如果这有困惑，请阅读： JPA和Hibernate之间有什么区别？
StaleObjectStateException is thrown when you use straight hibernate API. OptimisticLockException is thrown if you used JPA style hibernate. If this confuses you please read: What's the difference between JPA and Hibernate?
使用try catch块捕获异常：
Use try catch block to catch the exception:
try {
// your hibernate operation here
} catch (OptimisticLockException e) {
// do something (eg: inform user update is conflicting)
}
这是值得注意的OptimisticLockException发生，因为其他事务更新（因此创建的更新版本）的对象之前，你有机会这样做。在UI应用程序中，通常提示用户是否覆盖/丢弃/合并他/她的对象版本
It's worth noting OptimisticLockException occur due to other transaction has updated (hence created newer version of) the object before you got chance to do so. In a UI application it is common to prompt the user whether to overwrite / discard / merge his/her version of the object
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