re: REST return a response status of 406

[Mark Curlette]

Hello,
I am new to REST , and I am trying to figure out why it gives me a return status code of 406.
Please help me to shed some light into this.

I have create a web dynamic project called RestSimpleApp. It contains three sample programs in three different packages as follow :

package shopping.cart.om;

import javax.xml.bind.annotation.XmlRootElement;


@XmlRootElement
public class Order {
       private String id;
       private String description;


       public Order() {
       }


       public Order(String id, String description) {
              this.id = id;
              this.description = description;
       }
       public String getId() {
              return id;
       }
       public void setId(String id) {
              this.id = id;
       }      
       public String getDescription() {
              return description;
       }
       public void setDescription(String description) {
              this.description = description;
       }
}



package shopping.cart.dao;

import java.util.HashMap;
import java.util.Map;
import shopping.cart.om.Order;


public enum OrderDao {
       instance;
       private Map<String, Order> contentProvider = new HashMap<String, Order>();


       private OrderDao() {
              Order order = new Order("1", "1st order");
              order.setDescription("This is the 1st order");
              contentProvider.put("1", order);
              order = new Order("2", "2nd order");
              order.setDescription("This is the 2nd order");
              contentProvider.put("2", order);
       }
       
       public Map<String, Order> getModel(){
              return contentProvider;
       }
}

package shopping.cart.service;

import java.util.ArrayList;
import java.util.List;


import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Request;
import javax.ws.rs.core.UriInfo;


import shopping.cart.dao.OrderDao;
import shopping.cart.om.Order;


//maps this resource to the URL orders
@Path("/orders")
public class OrdersService {


         // Allows to insert contextual objects into the class
         @Context
         UriInfo uriInfo;
         @Context
         Request request;
         
         // Return the list of orders for applications with json or xml formats
         @GET
         @Produces({MediaType.APPLICATION_XML,MediaType.APPLICATION_JSON})
         public List<Order> getOrders() {
           List<Order> orders = new ArrayList<Order>();
           orders.addAll(OrderDao.instance.getModel().values());
           return orders; 
         }
}

I was able to view the result of my order through the web browser as http://localhost:8080/RestSimpleApp/rest/orders. However, I got the return reponse status of 406 when I tried to call it from a client program which I have created in another web dynamic project as follow

package shopping.cart.client;

import java.net.URI;

import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.UriBuilder;

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.client.config.ClientConfig;
import com.sun.jersey.api.client.config.DefaultClientConfig;

public class Test {
  public static void main(String[] args) {
    ClientConfig config = new DefaultClientConfig();
    Client client = Client.create(config);
    WebResource service = client.resource(getBaseURI());
   
    // Get XML
    System.out.println(service.path("rest").path("orders").accept(MediaType.TEXT_XML).get(String.class));
    
  }

  private static URI getBaseURI() {
    return UriBuilder.fromUri("http://localhost:8080/RestSimpleApp").build();

    
  }

} 

I am awared that I may miss some important things but I could not figure out, so please help me if you can.

Thanks so much in advance,

Tom

[Bear Bibeault]

What's the Accept header on the request? 406 usually means that you've asked for a media type that isn't possible to generate.

It looks look your service is limited to XML and JSON.

[Mark Curlette]

Thanks so much Bear. It worked when I change my request to MediaType.APPLICATION_XML or MediaType.APPLICATION_JSON. I remember now to pay attention to the accept header of the request.

[Bear Bibeault]