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Clarify ConversionService initialization 

Spring Boot will eagerly initialize a `ConversionService` named
`conversionService` for configuration keys processing. This commit adds
a note in the documentation regarding that special behaviour.

Closes gh-4162
This commit is contained in:
Stephane Nicoll 2015-10-13 17:39:31 +02:00
parent 3e79647b35
commit e221dfc3a6
1 changed files with 4 additions and 0 deletions
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4
spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc
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@ -764,6 +764,10 @@ can provide a `ConversionService` bean (with bean id `conversionService`) or cus
property editors (via a `CustomEditorConfigurer` bean) or custom `Converters` (with
bean definitions annotated as `@ConfigurationPropertiesBinding`).
NOTE: As this bean is requested very early during the application lifecycle, make sure to
limit the dependencies your `ConversionService` is using. Typically, any dependency that
you'd require may not be fully initialized at creation time. You may want to rename your
custom `ConversionService` if it's not required for configuration keys coercion.
[[boot-features-external-config-validation]]