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@ -149,7 +149,7 @@ within a JUnit test.
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=== Using the CommandLineRunner
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=== Using the CommandLineRunner
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If you want access to the raw command line arguments, or you need to run some specific code
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If you want access to the raw command line arguments, or you need to run some specific code
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once the `SpringApplication` has started you can implement the `CommandLineRunner`
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once the `SpringApplication` has started you can implement the `CommandLineRunner`
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interface. The `run(String... args)` method will be called on all spring beans
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interface. The `run(String... args)` method will be called on all Spring beans
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implementing this interface.
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implementing this interface.
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[source,java,indent=0]
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[source,java,indent=0]
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@ -187,7 +187,7 @@ interface if they wish to return a specific exit code when the application ends.
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[[boot-features-external-config]]
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[[boot-features-external-config]]
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== Externalized Configuration
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== Externalized Configuration
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Spring Boot likes you to externalize your configuration so you can work with the same
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Spring Boot allows you to externalize your configuration so you can work with the same
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application code in different environments. You can use properties files, YAML files,
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application code in different environments. You can use properties files, YAML files,
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environment variables and command-line arguments to externalize configuration. Property
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environment variables and command-line arguments to externalize configuration. Property
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values can be injected directly into your beans using the `@Value` annotation, accessed
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values can be injected directly into your beans using the `@Value` annotation, accessed
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@ -227,14 +227,14 @@ To provide a concrete example, suppose you develop a `@Component` that uses a
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You can bundle an `application.properties` inside your jar that provides a sensible
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You can bundle an `application.properties` inside your jar that provides a sensible
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default `name`. When running in production, an `application.properties` can be provided
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default `name`. When running in production, an `application.properties` can be provided
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outside of your jar that overrides `name`; and for one off testing, you can launch with
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outside of your jar that overrides `name`; and for one-off testing, you can launch with
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a specific command line switch (e.g. `java -jar app.jar --name="Spring"`).
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a specific command line switch (e.g. `java -jar app.jar --name="Spring"`).
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[[boot-features-external-config-command-line-args]]
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[[boot-features-external-config-command-line-args]]
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=== Accessing command line properties
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=== Accessing command line properties
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By default SpringApplication will convert any command line option arguments (starting
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By default `SpringApplication` will convert any command line option arguments (starting
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with ``--'', e.g. `--server.port=9000`) to a `property` and add it to the Spring
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with ``--'', e.g. `--server.port=9000`) to a `property` and add it to the Spring
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`Environment`. As mentioned above, command line properties always take precedence over
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`Environment`. As mentioned above, command line properties always take precedence over
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other property sources.
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other property sources.
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@ -261,8 +261,8 @@ an alternative to '.properties'.
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If you don't like `application.properties` as the configuration file name you can switch
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If you don't like `application.properties` as the configuration file name you can switch
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to another by specifying a `spring.config.name` environment property. You can also refer
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to another by specifying a `spring.config.name` environment property. You can also refer
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to an explicit location using the `spring.config.location` environment property (comma-
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to an explicit location using the `spring.config.location` environment property
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separated list of directory locations, or file paths).
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(comma-separated list of directory locations, or file paths).
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[indent=0]
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[indent=0]
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----
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----
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@ -506,7 +506,7 @@ property editors (via a `CustomEditorConfigurer` bean).
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[[boot-features-external-config-validation]]
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[[boot-features-external-config-validation]]
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==== @ConfigurationProperties Validation
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==== @ConfigurationProperties Validation
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Spring Boot will attempt to validate external configuration, by default using JSR-303
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Spring Boot will attempt to validate external configuration, by default using JSR-303
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(if it is on the classpath). You can simply add JSR-303 `javax.valididation` constraint
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(if it is on the classpath). You can simply add JSR-303 `javax.validation` constraint
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annotations to your `@ConfigurationProperties` class:
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annotations to your `@ConfigurationProperties` class:
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[source,java,indent=0]
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[source,java,indent=0]
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