Hibernate映射文件和注释的区别 [英] Difference between Hibernate mapping file and annotation

问题描述

今天我试图用Hibernate创建一个应用程序作为ORM。所以在创建时我有一个疑问。什么是最佳实践，Hibernate映射文件（.hbm文件）或注释？它有什么优点和缺点？请帮助我理解。

Today I was trying to create a application using Hibernate as ORM. So while creating I had a doubt. What is the best practice to use, Hibernate mapping file (.hbm file) or annotations ? What are the pros and cons of it ? Please help me in understanding.

推荐答案

• 没有功能差异。您可以使用这两种方法执行（几乎）相同的操作
在Java有注释之前使用了

• xml文件（在1.5中添加），因此它们可以被认为是过时的映射方式
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• 通常最好使用JPA注释而不是特定于hibernate的注释;如果使用xml - 有一个JPA xml格式，它应该优先于休眠本地文件。


• there is no functional difference. You can do (almost) the same things with both approaches
• xml files were used before Java had annotations (added in 1.5), so they can be considered an outdated way of mapping
• it is generally preferred to use JPA annotations rather than hibernate-specific ones; if using xml - there is a JPA xml format, which should be preferred to hibernate native one

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