Table of Contents

15.1. Jersey default configuration provider

15.2. Micro profile configuration provider

Since Jersey 2.29 it is possible to turn on the ability to convert the System properties into Configuration properties. That can be done by using the System property, too:

java -Djersey.config.allowSystemPropertiesProvider=true -DNAME=VALUE

Note that with the security manager turned on, write access permission is required to execute System.getProperties(). With insufficient permissions, the warning message is logged (with Level.FINER) and onlyCommonProperties,ClientProperties, andServerProperties properties are used, as the property names are known and System.getProperty(name) method can be used, which does not require the write access permission.

Microprofile platform became very popular lately andMicroprofile Config Specification is a recommended way in the Jakarta EE world to configure the specifications under the Jakarta EE umbrella.

Jersey 2.29 comes with support for Microprofile Config implementation such asHelidon orSmallRye. To configure the Jersey application, the microprofile-config.properties file needs to be created in the META-INF folder. The required properties are then simply set in the microprofile-config.properties:

                NAME=VALUE

Then Jersey Microprofile Config extension is needed to be added:

                <dependency>                    <groupId>org.glassfish.jersey.ext.microprofile</groupId>                    <artifactId>jersey-mp-config</artifactId>                    <version>3.0.18</scope>                </dependency>

And the Microprofile Config implementation, such as Helidon:

                <dependency>                    <groupId>io.helidon.microprofile.config</groupId>                    <artifactId>helidon-microprofile-config</artifactId>                    <version>2.1.0</version>                </dependency>

Or SmallRye:

                <dependency>                    <groupId>io.smallrye</groupId>                    <artifactId>smallrye-config</artifactId>                    <version>1.5.0</version>                </dependency>

or any other suitable Microprofile Config implementation.