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Document need to avoid Logback placeholder format in logging properties

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Closes gh-4731
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Andy Wilkinson
2015-12-15 14:28:44 +00:00
parent 199c88e51c
commit 08720b4612
1 changed files with 8 additions and 0 deletions
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spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc
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@@ -1231,6 +1231,14 @@ To help with the customization some other properties are transferred from the Sp
All the logging systems supported can consult System properties when parsing their
configuration files. See the default configurations in `spring-boot.jar` for examples.
[TIP]
====
If you want to use a placeholder in a logging property, you should use
<<boot-features-external-config-placeholders-in-properties,Spring Boot's syntax>> and not
the syntax of the underlying framework. Notably, if you're using Logback, you should use
`:` as the delimiter between a property name and its default value and not `:-`.
====
[TIP]
====