1. Introduction to @EnableConfigurationProperties
Spring Boot provides a convenient way to bind external configuration properties to Spring beans using the @EnableConfigurationProperties
annotation. It enables the automatic binding of properties defined in your application’s configuration files (such as application.properties
or application.yml
) to fields of Spring beans.
2. Creating Configuration Properties
First, you need to create a POJO (Plain Old Java Object) to represent your configuration properties. These properties will be mapped from the configuration files.
In this example, we have created a MyAppProperties
class annotated with @ConfigurationProperties
. The prefix
attribute specifies the prefix for the properties that should be bound to this class. For example, properties with keys starting with myapp
will be bound to this class.
3. Using @EnableConfigurationProperties
Next, you need to enable the configuration properties binding by using the @EnableConfigurationProperties
annotation in one of your configuration classes.
By including @EnableConfigurationProperties
with the MyAppProperties
class specified, Spring Boot will automatically bind the properties defined in your application’s configuration to the fields of MyAppProperties
.
4. Example
Let’s create an example to demonstrate the usage of @EnableConfigurationProperties
.
In this example, we have a MyApp
class annotated with @SpringBootApplication
. We also use @EnableConfigurationProperties
to enable configuration properties binding for the MyAppProperties
class.
5. Conclusion
In this tutorial, you learned how to use @EnableConfigurationProperties
in Spring Boot to bind external configuration properties to Spring beans. This simplifies the process of injecting configuration properties into your Spring beans and allows for more flexible configuration management in your Spring Boot applications. By following the examples provided, you can easily integrate and use @EnableConfigurationProperties
in your own Spring Boot projects.