Snippet

Injecting Configuration with @Value

The @Value annotation allows you to inject simple values (like strings or integers) from external configuration files like 'application.properties' directly into your fields.

snippet.java

java

@Component
public class WelcomeMessage {
    @Value("${app.welcome.text}")
    private String message;
 
    public String getMessage() {
        return message;
    }
}

spring

Breakdown

@Value("${app.welcome.text}")

Uses SpEL (Spring Expression Language) to look up a property key.

private String message;

The field where the configuration value will be stored.

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Injecting Configuration with @Value

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