> For the complete documentation index, see [llms.txt](https://jack80342.gitbook.io/spring-boot/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://jack80342.gitbook.io/spring-boot/x.-appendices/b.-configuration-metadata.md).

# 附录B. 配置元数据

Spring Boot jars包含元数据文件，它们提供了所有支持的配置属性详情。这些文件设计用于让IDE开发者能够为使用`application.properties`或`application.yml`文件的用户提供上下文帮助及代码完成功能。

主要的元数据文件是在编译器通过处理所有被`@ConfigurationProperties`注解的节点来自动生成的。尽管如此，在实现个别案例或者更加高级的使用案例时，还是可以[手写部分元数据](https://docs.spring.io/spring-boot/docs/2.0.0.RELEASE/reference/htmlsingle/#configuration-metadata-additional-metadata)。


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