Error 415 Unsupported Media Type: POST not reaching REST if JSON, but it does if XML

Question

I am actually new to REST WS but really I don't get this 415 Unsupported Media Type.

I am testing my REST with Poster on Firefox and the GET works fine for me, also the POST (when it's a application/xml) but when I try application/json it doesn't not reach the WS at all, the server rejects it.

This is my URL: http:// localhost:8081/RestDemo/services/customers/add

This is JSON I'm sending: {"name": "test1", "address" :"test2"}

This is XML I'm sending:

<customer>     <name>test1</name>     <address>test2</address> </customer> 

and this is my Resource class:

@Produces("application/xml") @Path("customers") @Singleton @XmlRootElement(name = "customers") public class CustomerResource {      private TreeMap<Integer, Customer> customerMap = new TreeMap<Integer, Customer>();      public  CustomerResource() {         // hardcode a single customer into the database for demonstration         // purposes         Customer customer = new Customer();         customer.setName("Harold Abernathy");         customer.setAddress("Sheffield, UK");         addCustomer(customer);     }      @GET     @XmlElement(name = "customer")     public List<Customer> getCustomers() {         List<Customer> customers = new ArrayList<Customer>();         customers.addAll(customerMap.values());         return customers;     }      @GET     @Path("/{id}")     @Produces("application/json")     public String getCustomer(@PathParam("id") int cId) {         Customer customer = customerMap.get(cId);          return  "{\"name\": \" " + customer.getName() + " \", \"address\": \"" + customer.getAddress() + "\"}";      }      @POST     @Path("/add")     @Produces(MediaType.APPLICATION_JSON)     @Consumes({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})     public String addCustomer(Customer customer) {          //insert           int id = customerMap.size();          customer.setId(id);          customerMap.put(id, customer);          //get inserted          Customer result = customerMap.get(id);           return  "{\"id\": \" " + result.getId() + " \", \"name\": \" " + result.getName() + " \", \"address\": \"" + result.getAddress() + "\"}";     }  } 

EDIT 1:

This is my Customer class:

@XmlRootElement  public class Customer implements Serializable {      private int id;     private String name;     private String address;      public Customer() {     }      public int getId() {         return id;     }      public void setId(int id) {         this.id = id;     }      public String getName() {         return name;     }      public void setName(String name) {         this.name = name;     }      public String getAddress() {         return address;     }      public void setAddress(String address) {         this.address = address;     }  } 

Answer 1

Add Content-Type: application/json and Accept: application/json in REST Client header section