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Fix package tangle and polish prefix support

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Polish the prefix support introduced in commit a8592f36d4 and fix a
package tangle between `boot.context.properties.source` and `boot.env`.

The `Prefix` interface has now been moved into a new default method on
`OriginLookup`.

See gh-3450
This commit is contained in:
Phillip Webb
2021-03-18 12:26:24 -07:00
parent 2c0e0e0662
commit bb38ee38a6
14 changed files with 192 additions and 103 deletions
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5
spring-boot-project/spring-boot-docs/src/docs/asciidoc/spring-boot-features.adoc
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@@ -993,6 +993,7 @@ The `YamlPropertiesFactoryBean` loads YAML as `Properties` and the `YamlMapFacto
You can also use the `YamlPropertySourceLoader` class if you want to load YAML as a Spring `PropertySource`.
[[boot-features-external-config-random-values]]
=== Configuring Random Values
The `RandomValuePropertySource` is useful for injecting random values (for example, into secrets or test cases).
@@ -1013,13 +1014,15 @@ The `+random.int*+` syntax is `OPEN value (,max) CLOSE` where the `OPEN,CLOSE` a
If `max` is provided, then `value` is the minimum value and `max` is the maximum value (exclusive).
[[boot-features-external-config-system-environment]]
=== Configuring System Environment Properties
Spring Boot supports setting a prefix for environment properties.
This is useful if the system environment is shared by multiple Spring Boot applications with different configuration requirements.
The prefix for system environment properties can be set directly on `SpringApplication`.
For example, if you set the prefix to `input`, a property such as `foo.bar` will also be resolved as `input.foo.bar` in the system environment.
For example, if you set the prefix to `input`, a property such as `remote.timeout` will also be resolved as `input.remote.timeout` in the system environment.
[[boot-features-external-config-typesafe-configuration-properties]]