RESTful service with postman - json

Question

I'm working on a jax-rs RESTful application and I have a service that is supposed to save a JSON objet into a database through JPA. The service class is something like:
#Path("/items")
#Stateless
#Consumes(MediaType.APPLICATION_JSON)
#Produces(MediaType.APPLICATION_JSON)
public class ItemsService {
#Inject
protected IItemsLogic itemsServiceLogic;
#POST
public ItemDTO create(ItemDTO item){
return itemsServiceLogic.createItem(item);
}
}
the itemsServiceLogic is just a class that transforms the DTO into another Java class declared as an entity in order to be serialized in a database through JPA.
What happens is that I'm testing the application through the google chrome browser client Postman but when I send a JSON objet into the POST method, the received DTO has no properties so the database doesn't save anything, as all the DTO's properties are null.
I'm using Glassfish 4.0 to host my application and everything with the database works fine. What could be wrong?
The DTO class would be:
#XmlRootElement
public class ItemDTO {
//Id private
Long id;
//item's description
private String description;
//item's name
private String name;
//Setters and getters
public Long getId(){
return id;
}
public String getDescription(){
return description;
}
public String getName(){
return name;
}
public void setId(Long nId){
this.id=nId;
}
public void setDescription(String nDescription){
this.description = nDescription;
}
public void setName(String nName){
this.name=nName;
}
}
And i'm sending the JSON:
{"id":1,"description":"some item","name":"item1"}