问题描述
当类在 Eclipse 中实现 Serializable 时，我有两个选择:添加默认的 serialVersionUID(1L) 或生成的 serialVersionUID(3567653491060394677L).我认为第一个更酷，但很多时候我看到人们使用第二个选项.是否有任何理由生成long serialVersionUID?
When class implements Serializable in Eclipse, I have two options: add default serialVersionUID(1L) or generated serialVersionUID(3567653491060394677L). I think that first one is cooler, but many times I saw people using the second option. Is there any reason to generate long serialVersionUID?
推荐答案
据我所知，这只是为了与以前的版本兼容.这仅在您之前忽略使用 serialVersionUID 时才有用，然后进行了您知道应该是 兼容 但会导致序列化中断.
As far as I can tell, that would be only for compatibility with previous releases. This would only be useful if you neglected to use a serialVersionUID before, and then made a change that you know should be compatible but which causes serialization to break.
请参阅 Java 序列化规范更多详情.
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