在 spring-context.xml 和 persistence.xml 中加载 .properties [英] loading .properties in spring-context.xml and persistence.xml

问题描述

有没有办法在 spring-context.xml 和 JPA persistence.xml 中引用 .properties 文件?

is there a way to reference a .properties file in a spring-context.xml and a JPA persistence.xml?

我想我在 spring 上下文文件中的某个地方看到过这样的例子，尽管我不记得那是在哪里.也许有人知道这个?关于persistence.xml，我实际上不确定这是否有效.

I think I've seen somewhere an example of this in spring context files, though I can't remember where that was. Maybe someone knows this? About the persistence.xml I am actually unsure if this works at all.

我的目标是更改开发和分发配置之间的一些属性.我目前的想法是通过模板配置中的 ant 手动替换文件中的所有属性.虽然应该有更好的方法来做到这一点.:)

My aim is to change some properties between development and distribution configuration. The idea I have currently is to replace all properties manually in the files via ant from a template config. Though there should be a better way to do this. :)

推荐答案

您可以使用 PropertyPlaceholderConfigurer.我认为这不适用于 JPA persistence.xml，尽管 Spring 的 JPA 支持允许您将大部分(如果不是全部)persistence.xml 的内容合并到 bean 文件本身中，在这种情况下它会正常工作.

You can reference external property files from a Spring bean definition file using a PropertyPlaceholderConfigurer. I don't think that will work for a JPA persistence.xml, although Spring's JPA support allows you to incorporate most, if not all, the content of persistence.xml into the beans file itself, in which case it would work fine.

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