title: Read a JSON file using JACKSON
body: <p>I want to read a JSON file received. </p>
  
  <p>That's the form of the JSON file:</p>
  
  <pre><code>{
      "name": "list_name"
      "items": [
          {
              "id": 4
          },
          {
              "id": 3
          },
          {
              "id": 2
          },
      ]
  } 
  </code></pre>
  
  <p>I want to parse that JSON that represents a movie list, and the id's of the movies. I want to extract the ids and the name. </p>
  
  <pre><code>@PUT
  @Path("/")
  @Consumes(MediaType.APPLICATION_JSON)
  public Response deleteMoviesFromList2(@Context HttpServletRequest req) Long movieListId) {
      Long userId = getLoggedUser(req);
      getLoggedUser(req);
  
      final String json = "some JSON string";
      final ObjectMapper mapper = new ObjectMapper();
  
  
      return buildResponse(listMovieService.remove(¿?));
  }
  </code></pre>
  
  <p>I want to extract the ids but I have no clue how to do it.</p>