如何在jersey中将json设置为默认值而不是xml？

   <groupId>org.glassfish.jersey.media</groupId>
   <artifactId>jersey-media-json-jackson</artifactId>
   <version>2.x</version>
</dependency>

import org.glassfish.jersey.jackson.JacksonFeature;

public class MyApplication extends ResourceConfig {
    public MyApplication() {
        register(JacksonFeature.class);
        // 注册其他需要的类和组件
    }
}

Content-Type: application/json

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

@Path("/example")
public class ExampleResource {
    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public MyObject getMyObject() {
        MyObject obj = new MyObject();
        // 设置对象属性
        return obj;
    }
}