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How do you externalize configuration using Spring Boot?

Pragya Keshap answered on March 1, 2023 Popularity 5/10 Helpfulness 1/10

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  • How do you externalize configuration using Spring Boot?

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    Spring Boot lets you externalize your configuration so that you can work with the same application code in different environments. You can use properties files, YAML files, environment variables, and command-line arguments to externalize configuration. Property values can be injected directly into your beans by using the @Value annotation, accessed through Spring’s Environment abstraction, or be bound to structured objects through @ConfigurationProperties.

    Spring Boot uses a very particular PropertySource order that is designed to allow sensible overriding of values. Properties are considered in the following order:

    Devtools global settings properties on your home directory (~/.spring-boot-devtools.properties when devtools is active).

    @TestPropertySource annotations on your tests.

    properties attribute on your tests. Available on @SpringBootTest and the test annotations for testing a particular slice of your application.

    Command line arguments.

    Properties from SPRING_APPLICATION_JSON (inline JSON embedded in an environment variable or system property).

    ServletConfig init parameters.

    ServletContext init parameters.

    JNDI attributes from java:comp/env.

    Java System properties (System.getProperties()).

    OS environment variables.

    A RandomValuePropertySource that has properties only in random.*.

    Profile-specific application properties outside of your packaged jar (application-{profile}.properties and YAML variants).

    Profile-specific application properties packaged inside your jar (application-{profile}.properties and YAML variants).

    Application properties outside of your packaged jar (application.properties and YAML variants).

    Application properties packaged inside your jar (application.properties and YAML variants).

    @PropertySource annotations on your @Configuration classes.

    Default properties (specified by setting SpringApplication.setDefaultProperties). 

    https://docs.spring.io/spring-boot/docs/2.1.9.RELEASE/reference/html/boot-features-external-config.html

    Popularity 5/10 Helpfulness 1/10 Language java
    Source: Grepper
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    Contributed on Mar 01 2023
    Pragya Keshap
    0 Answers  Avg Quality 2/10


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