打包一个可运行的JPA jar，将persistence.xml放在外面 [英] Package a runnable JPA jar putting persistence.xml outside

问题描述

我想将我的jpa / swing项目导出到一个可运行的jar中。但我希望persistence.xml不在包装里面的jar之外，所以我可以在不需要在每次配置后再次导出jar的情况下更改它。

I want to export my jpa/swing project to a runnable jar. But I want the persistence.xml to be outside the jar not packaged inside, so I can change it without the need to export the jar again after each config.

推荐答案

根据JPA规范，在定义持久性单元的JAR文件之外无法检测到 persistence.xml 文件。按照惯例，它应放在 META-INF 目录中。

According to JPA specifications, persistence.xml file cannot be detected outside the JAR file where the persistence unit is defined. By convention, it should be placed inside META-INF directory.

阅读JSR-317，第8.2.1段有关详细信息（ http://download.oracle。 com / otndocs / jcp / persistence-2.0-fr-eval-oth-JSpec / ）。

Read JSR-317, paragraph 8.2.1 for more details (http://download.oracle.com/otndocs/jcp/persistence-2.0-fr-eval-oth-JSpec/).

尽管如此，你可以试试这个家伙提出的提示此处并以分解形式部署您的档案。

Nevertheless, you can try the hint proposed by this guy here and deploy your archives in exploded form.

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