SimpleConfig

SimpleConfig provides opinionated configuration of Apache Commons Configuration project providing SpringBoot-like configuration experience.

Installation

In order to start using SimpleConfig add the following dependency to your Maven project:

<dependency>
  <groupId>com.github.hekonsek</groupId>
  <artifactId>simpleconfig</artifactId>
  <version>0.1</version>
</dependency>

Usage

SimpleConfig provides pre-defined instance of Apache Commons Configuration class:

import org.apache.commons.configuration2.Configuration;
import static com.github.hekonsek.simpleconfig.SimpleConfig.simple;
...
Configuration commonsConfig = simple().config();

The usual way to use SimpleConfig is to invoke simple().config() method chain and then execute appropriate Apache Commons Configuration method. For example to read configuration entry, use the following code:

import static com.github.hekonsek.simpleconfig.SimpleConfig.simple;
...
String myApiUrl = simple().config().getString("myapi.url");

Data sources

This predefined configuration instance is a composite configuration resolving configuration values in the following order:

• Java system properties
• OS environment variables

When key in format foo.bar cannot be resolved, SimpleConfig tries to resolve FOO_BAR property. This approach is useful when trying to resolve properties which have been set using environment variables. For example configuration value set as MYAPI_URL=http://myapi.com java -jar app.jar can be resolved from application using myapi.url key.

License

This project is distributed under Apache 2.0 license.