How to hit a specific REST Url based on maven profile?

Question

I have the following two REST Urls in my application.properties.

I would like to fetch one but not both based on dynamic parameter but not sure how. I tried using maven profile but not sure how to read the maven profile in Java code and get the url's based on that.

Please guide.

application.properties

rest.uri=http://localhost:8080/hello
mock.rest.uri=http://localhost:9999/hello

RestClient.java

public class HelloWorldClient {

    public static void main(String[] args) {
        try {
            Client client = Client.create();

            //getRestUrl() METHOD CALL NEEDS TO BE DYNAMIC 
            //EITHER MOCK URL OR ACTUAL REST URL SHOULD BE FETCHED HERE 
            // NOT SURE HOW ???????
            WebResource webResource = client.resource(getRestUrl());

            ClientResponse response = webResource.accept("text/plain").get(ClientResponse.class);
            if (response.getStatus() != 200) {
                throw new RuntimeException("Failed : HTTP error code : " + response.getStatus());
            }
            String output = response.getEntity(String.class);
            System.out.println("\nOutput from Server.... " + output);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static String getRestUrl() throws IOException {
        Properties prop = GenericUtils.loadProperties("application.properties");
        String restUri = prop.getProperty("rest.uri");
        String mockRestUri = prop.getProperty("mock.rest.uri");
        System.out.println("restUri = " + restUri);
        System.out.println("mockRestUri = " + mockRestUri);
        return mockRestUri;
    }

}

pom.xml

<profiles>
    <profile>
        <id>rest-server</id>
        <activation>
            <activeByDefault>true</activeByDefault>
        </activation>
    </profile>
    <profile>
        <id>mock-rest-server</id>
    </profile>
</profiles>

Answer 1

Based on the solution provided by Jose and Fetta above I altered the program and hereby aggregating both the solutions into this post and posting it here.

application.properties

rest.uri=${rest.uri}

pom.xml

<build>
    <filters>
        <filter>src/main/resources/application.properties</filter>
    </filters>
    <resources>
        <resource>
            <directory>src/main/resources</directory>
            <filtering>true</filtering>
        </resource>
    </resources>
</build>

<profiles>
    <profile>
        <id>rest-server</id>
        <properties>
            <rest.uri>http://localhost:8080/hello</rest.uri>
        </properties>
    </profile>
    <profile>
        <id>mock-rest-server</id>
        <properties>
            <rest.uri>http://localhost:9999/hello</rest.uri>
        </properties>
    </profile>
</profiles>

HelloWorldClient.java

public class HelloWorldClient {

    public static void main(String[] args) {
        try {
            Client client = Client.create();
            WebResource webResource = client.resource(getRestUrl());
            ClientResponse response = webResource.accept("text/plain").get(ClientResponse.class);
            if (response.getStatus() != 200) {
                throw new RuntimeException("Failed : HTTP error code : " + response.getStatus());
            }
            String output = response.getEntity(String.class);
            System.out.println("\nOutput from Server.... " + output);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static String getRestUrl() throws IOException {
        Properties prop = GenericUtils.loadProperties("application.properties");
        String restUri = prop.getProperty("rest.uri");
        System.out.println("restUri = " + restUri);
        return restUri;
    }

}

Compile the class using profiles

mvn clean install -Prest-server
mvn clean install -Pmock-rest-server

Run the main method

mvn exec:java -Dexec.mainClass="com.example.HelloWorldClient"