Jersey RESTful web service gradle setup

First

Get rid of all the Jersey dependencies you currently have

dependencies {
    testCompile 'junit:junit:4.11'
    testCompile 'org.hamcrest:hamcrest-all:1.3'
    +------------- ======= JUNK ======= ----------------+
    | testCompile 'com.sun.jersey:jersey-client:1.17.1' |
    | compile 'com.sun.jersey:jersey-core:1.17.1'       |
    | compile 'com.sun.jersey:jersey-server:1.17.1'     |
    | compile 'com.sun.jersey:jersey-servlet:1.17.1'    |
    +---------------------------------------------------+
}

Below is the only only one you need to get the basic functionality

dependencies {
    testCompile 'junit:junit:4.11'
    testCompile 'org.hamcrest:hamcrest-all:1.3'
   +-------------------- ========= GOLDEN ======== -------------------------+
   | compile 'org.glassfish.jersey.containers:jersey-container-servlet:2.14'|
   +------------------------------------------------------------------------+
   /* UPDATE */
   /* Starting Jersey version 2.26, you will also need the following */
   /* compile 'org.glassfish.jersey.inject:jersey-hk2:2.26' */
}

Second

web.xml

<web-app>
    <servlet>
        <servlet-name>Jersey Web Application</servlet-name>
        <servlet-class>
                org.glassfish.jersey.servlet.ServletContainer
        </servlet-class>
        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>com.ziroby.hello.webapp</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Jersey Web Application</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>
</web-app>

Third

Test

import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.WebTarget;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import org.junit.Test;

public class HelloIntegrationTest {

    private static String HELLO_URL = "http://localhost:8080/hello";

    @Test
    public void testHello() throws Exception {
        Client client = ClientBuilder.newClient();
        WebTarget webTarget = client.target(HELLO_URL);
        String response = webTarget.request().get(String.class);
        System.out.println(response);
        assertThat(response, is("Hello, World!"));
    }
}

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This has been tested with a clone of the linked project. Only changes are shown above.

Other Resources:

• What exactly is the ResourceConfig?
• More information on deployment options
• More information in the Client API

---

Update

For JSON support use

org.glassfish.jersey.media:jersey-media-json-jackson:2.14

No extra configuration is required for it to work.