CODEWITHSUNDEEP
javaspringmavenspring-boot
Itsik Mauyhas
Itsik Mauyhas

Reputation: 3984

Spring - inject application.properties to jar(as Maven dependency)

I want to access my application.properties file from a jar I created and included in my pom.

So in parent project - 

<dependency>
    <groupId>some.group.name</groupId>
    <artifactId>some-jar-name</artifactId>
    <version>0.0.1-SNAPSHOT</version>
</dependency>

And inside the jar I have a class that needs values from the parent application.properties file.

I already tried using spring.profiles.active by setting spring.profiles.active=test and printing JVM args but the values was not injected.

Inside the jar -

public class PropertiesRepository  {
    //get application.properties
    public PropertiesRepository(String appName, String instance) {
        RuntimeMXBean runtimeMxBean = ManagementFactory.getRuntimeMXBean();
        List<String> arguments = runtimeMxBean.getInputArguments();

        for (Iterator iterator = arguments.iterator(); iterator.hasNext();) {
            String param = (String) iterator.next();
            System.out.println("Runtime arg=" + param);
        }
    }

}

Upvotes: 1

Views: 1977

Answers (1)

LppEdd
LppEdd

Reputation: 21134

As your file will be on the classpath, use a @Configuration class with @PropertySource.

@Configuration
@PropertySource("classpath:your-file-name.properties")
public class PropertiesConfiguration { }

If your file name is the standard application.properties, you don't even need to do that, it will be picked up automatically, and you'll be able to access them via

@Value("${your-property}")

or

Environment#getProperty("your-property")

Given you're on Spring Boot, everything should work flawlessly with your current dependency configuration.

Upvotes: 1

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