@Produces(MediaType.APPLICATION_JSON) and the content_type is not added to header in uber jar

Question

I am so confusing.

There is an Jakarta application that is run by GrizzlyHttpServer and the following configuration:

1- JDK 17

2- hibernate 5

3- hk2 for DI

The pom.xml is :

<dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-grizzly2-http</artifactId>
        </dependency>

        <!-- Jersey DI and core-->
        <dependency>
            <groupId>org.glassfish.jersey.inject</groupId>
            <artifactId>jersey-hk2</artifactId>
        </dependency>
        <dependency>
            <groupId>org.glassfish.hk2</groupId>
            <artifactId>hk2-metadata-generator</artifactId>
            <version>3.0.2</version>
        </dependency>

        <!-- add jackson as json provider -->
        <dependency>
            <groupId>org.glassfish.jersey.media</groupId>
            <artifactId>jersey-media-json-jackson</artifactId>
        </dependency>

        <!-- Need this to hide warning for jakarta.activation.DataSource -->
        <dependency>
            <groupId>jakarta.activation</groupId>
            <artifactId>jakarta.activation-api</artifactId>
            <version>2.0.1</version>
        </dependency>

        <!-- JUnit 5 -->
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-params</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>

        <!-- test json data -->
        <dependency>
            <groupId>org.skyscreamer</groupId>
            <artifactId>jsonassert</artifactId>
            <version>${jsonassert.version}</version>
            <scope>test</scope>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>6.1.5.Final</version>
            <type>pom</type>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>5.6.12.Final</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.reflections</groupId>
            <artifactId>reflections</artifactId>
            <version>0.9.11</version>
        </dependency>
        <dependency>
            <groupId>com.art.vesal</groupId>
            <artifactId>common</artifactId>
            <version>2.0.0-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>com.sun.xml.bind</groupId>
            <artifactId>jaxb-core</artifactId>
            <version>2.3.0.1</version>
        </dependency>
        <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
            <version>2.3.1</version>
        </dependency>
        <dependency>
            <groupId>com.sun.xml.bind</groupId>
            <artifactId>jaxb-impl</artifactId>
            <version>2.3.1</version>
        </dependency>
        <dependency>
            <groupId>com.oracle.database.jdbc</groupId>
            <artifactId>ojdbc6</artifactId>
            <version>11.2.0.4</version>
        </dependency>

        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-simple</artifactId>
            <version>1.7.7</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.7</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>
        <dependency>
            <groupId>com.behsa</groupId>
            <artifactId>behsa-utils</artifactId>
            <version>1.0</version>
        </dependency>
        <dependency>
            <groupId>net.freeutils</groupId>
            <artifactId>jcharset</artifactId>
            <version>1.5</version>
        </dependency>
        <dependency>
            <groupId>ir.ghasemkiani</groupId>
            <artifactId>persiancalendar</artifactId>
            <version>2.1.7</version>
        </dependency>
        <dependency>
            <groupId>org.apache.activemq</groupId>
            <artifactId>activemq-all</artifactId>
            <version>5.15.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.activemq</groupId>
            <artifactId>artemis-jms-client</artifactId>
            <version>2.4.0</version>
        </dependency>
        <dependency>
            <groupId>org.mongodb.morphia</groupId>
            <artifactId>morphia</artifactId>
            <version>1.3.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.12</version>
        </dependency>
        <dependency>
            <groupId>org.jdom</groupId>
            <artifactId>com.springsource.org.jdom</artifactId>
            <version>2.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.jdom</groupId>
            <artifactId>jdom</artifactId>
            <version>1.1</version>
        </dependency>
        <dependency>
            <groupId>com.art</groupId>
            <artifactId>dataserver_api</artifactId>
            <version>1.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.4</version>
        </dependency>
        <dependency>
            <groupId>org.jodd</groupId>
            <artifactId>jodd-http</artifactId>
            <version>3.6.7</version>
        </dependency>
        <dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz</artifactId>
            <version>2.2.1</version>
        </dependency>

and the Jersey endpoint is :

@Path("/backend")
public class MessageRelayRest {

    @Inject
    private UserDaoInf log;
    @Inject
    private ArtMTSMSRemoteInf relay;

    @Path("/many2many")
    @POST
    @Produces("application/json")
    @Consumes(MediaType.APPLICATION_JSON)
    public ReferenceResultModel sendMessageManyToMany(MessageRelayModel messageRelayModel) {
        System.out.println("$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$");
        ReferenceResultModel result = relay.sendMessageManyToMany(messageRelayModel.getUsername(), messageRelayModel.getPassword(), messageRelayModel.getOriginator(), messageRelayModel.getDestination(), messageRelayModel.getContent(), messageRelayModel.getUserSuppliedIds(), messageRelayModel.getIp());
        return result;
    }

.....

Everything is working correctly as expected in Intellij IDEA but when I make as uber jar by the following maven plugin:

<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                        <configuration>
                            <archive>
                                <manifest>
                                    <mainClass>
                                        com.art.vesal.MainApp
                                    </mainClass>
                                </manifest>
                            </archive>
                            <descriptorRefs>
                                <descriptorRef>jar-with-dependencies</descriptorRef>
                            </descriptorRefs>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

and run the jar by java -jar, when request to the endpoint, the following error is raised:

POST http://localhost:8081/backend/many2many returned a response status of 415 Unsupported Media Type

14-Nov-2022 15:58:36.811 SEVERE [http-nio-8080-exec-78] com.sun.jersey.api.client.ClientResponse.getEntity A message body reader for Java class com.art.vesal.common.model.ReferenceResultModel, and Java type class com.art.vesal.common.model.ReferenceResultModel, and MIME media type application/octet-stream was not found 14-Nov-2022 15:58:36.812 SEVERE [http-nio-8080-exec-78] com.sun.jersey.api.client.ClientResponse.getEntity The registered message body readers compatible with the MIME media type are: application/octet-stream ->
com.sun.jersey.core.impl.provider.entity.ByteArrayProvider
com.sun.jersey.core.impl.provider.entity.FileProvider
com.sun.jersey.core.impl.provider.entity.InputStreamProvider
com.sun.jersey.core.impl.provider.entity.DataSourceProvider
com.sun.jersey.core.impl.provider.entity.RenderedImageProvider / -> com.sun.jersey.core.impl.provider.entity.FormProvider com.sun.jersey.core.impl.provider.entity.StringProvider
com.sun.jersey.core.impl.provider.entity.ByteArrayProvider
com.sun.jersey.core.impl.provider.entity.FileProvider
com.sun.jersey.core.impl.provider.entity.InputStreamProvider
com.sun.jersey.core.impl.provider.entity.DataSourceProvider
com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$General com.sun.jersey.core.impl.provider.entity.ReaderProvider
com.sun.jersey.core.impl.provider.entity.DocumentProvider
com.sun.jersey.core.impl.provider.entity.SourceProvider$StreamSourceReader com.sun.jersey.core.impl.provider.entity.SourceProvider$SAXSourceReader com.sun.jersey.core.impl.provider.entity.SourceProvider$DOMSourceReader com.fasterxml.jackson.jaxrs.json.JacksonJsonProvider
com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$General com.sun.jersey.core.impl.provider.entity.XMLListElementProvider$General com.sun.jersey.core.impl.provider.entity.XMLRootObjectProvider$General com.sun.jersey.core.impl.provider.entity.EntityHolderReader

Where is wrong? I am so confusing!!

EDIT 1 This is main class:

public class MainApp {

    public static final URI BASE_URI = URI.create("http://localhost:8081");

    // Starts Grizzly HTTP server
    public static HttpServer startHttpServer() {

        final ResourceConfig config = new ResourceConfig();
        config.register(MessageRelayRest.class);
        config.register(CustomJacksonMapperProvider.class);
        config.register(CustomJsonExceptionMapper.class);
        config.register(Binder.class);
        // JacksonFeature for JAXB/POJO, for pure JSON, no need this JacksonFeature
        // config.register(JacksonFeature.class);

        return GrizzlyHttpServerFactory.createHttpServer(BASE_URI, config);
    }

    public static void main(String[] args) {

        try {

            final HttpServer server = startHttpServer();

            server.start();

            // shut down hook
            Runtime.getRuntime().addShutdownHook(new Thread(server::shutdownNow));

            System.out.println(String.format("Application started.%nStop the application using CTRL+C"));

            // block and wait shut down signal, like CTRL+C
            Thread.currentThread().join();

        } catch (InterruptedException | IOException ex) {
            //Logger.getLogger(MainApp.class.getName()).log(Level.SEVERE, null, ex);
        }

    }

}