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Update list overriding documentation

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Closes gh-11012
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Madhura Bhave
2017-11-14 12:22:32 -08:00
parent 88366b75d0
commit 5f5e7e5089
1 changed files with 4 additions and 16 deletions
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20
spring-boot-project/spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc
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@@ -723,22 +723,10 @@ previously:
[NOTE]
====
Extra care is required when configuring lists as shown in the preceding example, as
overriding does not work as you might expect. In the preceding example, when `my.servers`
is redefined in several places, the individual elements are targeted for overriding, but
the list itself is not targeted for overriding. To make sure that a `PropertySource` with
higher precedence can override the list, you need to define it as a single property, as
shown in the following example:
[source,yaml,indent=0]
----
my:
servers: dev.bar.com,foo.bar.com
----
====
When lists are configured in more than one place, overriding works by replacing the entire list.
In the preceding example, when `my.servers` is redefined in several places, the entire list from
the `PropertySource` with higher precedence will override any other configuration for that list.
Both comma-separated lists and yaml lists can be used for completely overriding the contents of the list.
[[boot-features-external-config-exposing-yaml-to-spring]]
==== Exposing YAML as Properties in the Spring Environment