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Merge pull request #31941 from vilmos 

* pr/31941:
  Fix property placeholder references in @Value example

Closes gh-31941
This commit is contained in:
Phillip Webb 2022-08-01 12:35:01 +01:00
parent 141237e2f8 00be9e4e94
commit 66a93a38ec
1 changed files with 2 additions and 2 deletions
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spring-boot-project/spring-boot-docs/src/docs/asciidoc/features/external-config.adoc
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@ -1236,8 +1236,8 @@ The following table summarizes the features that are supported by `@Configuratio
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 <<features#features.external-config.typesafe-configuration-properties.relaxed-binding, 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.
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.
====
If you define a set of configuration keys for your own components, we recommend you group them in a POJO annotated with `@ConfigurationProperties`.