Jersey REST consuming map from JSON

Question

I am trying to consume JSON object sent by a client into a Map(or JSON object). I am using Jersey2.22.1 and by default it is using MOXY. Tried HashMap as shown below but no luck. It gives 415 error - "Unsupported Media Type"

@POST
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public List<Task> addTask(HashMap<String,Object> dynamicParam){

Tried with a custom class as well by wrapping a Map. again the same error. Can some one help me and let me know how to handle Map.

@XmlRootElement
public class DynamicFormData {

Map<Object,Object> data;

public Map<Object, Object> getData() {
    return data;
}

public void setData(Map<Object, Object> data) {
    this.data = data;
}

As a temp Solution, I am using below code. But would like to know how to correctly do this with Map

@POST
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public List<Task> addTask(String dynamicParam){     
    log.info("addTask Start");
    Gson gson = new Gson();
    Map<String, Object> map = new HashMap<String, Object>();
    map = (Map<String, Object>)gson.fromJson(dynamicParam, map.getClass());

Answer 1

Use @Consumes({MediaType.APPLICATION_FORM_URLENCODED}) in combination with javax.ws.rs.core.MultivaluedMap Working example: JS-Client:

function postCalling(){
$.ajax({
    type: 'POST',
    url: "<url>",
    contenttype: "application/json",
    datatype: "json",
    data: {
        'paramOne': 'ONE',
        'paramTwo' : 'TWO'
    },
    success: function (data, status, jqXHR) {
        alert('It worked!: '+JSON.stringify(data));
    },
    error: function (jqXHR, status) {
        alert('didnt work!');

    }
});

Jersey-Code:

@POST
@Produces({MediaType.APPLICATION_JSON})
@Consumes({MediaType.APPLICATION_FORM_URLENCODED})
@Path("/sample")
 public String getCumGa1Json(MultivaluedMap<String, String> postDataMap) {
    System.out.println(postDataMap.get("paramOne").get(0));
    //prints ONE
    System.out.println(postDataMap.get("paramTwo").get(0));
    //prints TWO
    return toJSon(anObject);
}