diff --git a/spring-boot-project/spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc b/spring-boot-project/spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc index 79581cc613..12f0b3026c 100644 --- a/spring-boot-project/spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc +++ b/spring-boot-project/spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc @@ -1303,7 +1303,7 @@ The following table summarizes the features that are supported by `@Configuratio | <> | Yes -| No +| Limited (see note below) | <> | Yes @@ -1315,7 +1315,12 @@ The following table summarizes the features that are supported by `@Configuratio |=== If you define a set of configuration keys for your own components, we recommend you group them in a POJO annotated with `@ConfigurationProperties`. -You should also be aware that, since `@Value` does not support relaxed binding, it is not a good candidate if you need to provide the value by using environment variables. +Doing so will provide you with structured, type-safe object that you can inject into your own beans. + +If you do want to use `@Value`, we recommend that you refer to property names using their canonical form (kebab-case using only lowercase letters). +This will allow Spring Boot to use the same logic as it does when relaxed binding `@ConfigurationProperties`. +For example, `@Value("{demo.item-price}")` will pick up `demo.item-price` and `demo.itemPrice` forms from the `application.properties` file, as well as `DEMO_ITEMPRICE` from the system environment. +If you used `@Value("{demo.itemPrice}")` instead, `demo.item-price` and `DEMO_ITEMPRICE` would not be considered. Finally, while you can write a `SpEL` expression in `@Value`, such expressions are not processed from <>.