[GitHub] [dubbo] Koooooo-7 commented on issue #12186: SpringBoot的application.yaml配置中超过两层的没提示

["Koooooo-7 (via GitHub)" <gi...@apache.org>]

Koooooo-7 commented on issue #12186:
URL: https://github.com/apache/dubbo/issues/12186#issuecomment-1537895388

   这个可能是因为SpringBoot默认不会扫描非内部类的Config对象，如果需要被processor扫描到就需要有`@NestedConfigurationProperty`，并且是在每一个嵌套的对象想都要加上这个注解。
   所以解决办法可能是：
   1. 在Dubbo有`@Nested`的地方加上`@NestedConfigurationProperty`， 目前会对dubbo-common有侵入性（要引入spring-boot 依赖）。
   
   2. 添加`META-INF/additional-spring-configuration-metadata.json` [Adding Additional Metadata](https://docs.spring.io/spring-boot/docs/current/reference/html/configuration-metadata.html#appendix.configuration-metadata.annotation-processor.adding-additional-metadata)， 可能要手动维护。目前SpringBoot自己内部的`additional-spring-configuration-metadata.json` 比如`flyway`的，也是自己手动维护。
   
   如果把2自动化可能要基于`@Nested`去做自己的AnnotationProcessor，或者自己参考springboot的processor完全实现hits功能生成`spring-configuration-metadata.json`。


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