How do I use configuration properties in Spring Boot?

How do I use configuration properties in Spring Boot?

In Spring Boot, you can use the @Value annotation to inject configuration properties into your beans.

Can you give me an example of how to define these properties?

Sure! You can define properties in application.properties or application.yml files like this:

app.name=MyApp
app.version=1.0

Then, you can access them using:

@Value("${app.name}")
private String appName;

What if I want to use a custom properties class?

You can create a class annotated with @ConfigurationProperties and bind it to your properties. For example:

@ConfigurationProperties(prefix = "app")
public class AppProperties {
    private String name;
    private String version;
    // getters and setters
}

How do I enable configuration properties in my application?

You need to annotate your main application class with @EnableConfigurationProperties(AppProperties.class) to enable it.