Rest Assured - deserialize Response JSON as List<POJO>

Question

I have a POJO Artwork. I'm retrieving a List of those objects from a RESTful webservice in the HTTP response body in JSON format. I'm trying to write a Rest Assured-based test that would analyze the returned list. The code looks like this:

Response response = get("/artwork"); List returnedArtworks = response.getBody().as(List.class) 

The problem is, I can't get Rest Assured to parse the returned JSON as List<Artwork>. Instead, I get a List<LinkedHashMap>. The map has a proper structure, i.e. could be mapped by Jackson to Artwork object, but I'd like to avoid mapping it manually.

JSON mappings in my model are OK, because when I map single object like this:

Artwork returnedArtwork = response.getBody().as(Artwork.class); 

it works fine.

Is it possible to get returnedArtworks as List<Artwork>?

Answer 1

You can do this:

List<Artwork> returnedArtworks = Arrays.asList(response.getBody().as(Artwork[].class)); 

The trick is to deserialize JSON to an array of objects (because there is no difference between the JSON string of an array or a list), then convert the array to a list.

Answer 2

this solution works for version 3.0.2 (io.restassured):

  JsonPath jsonPath = RestAssured.given()      .when()      .get("/order")      .then()      .assertThat()      .statusCode(Response.Status.OK.getStatusCode())      .assertThat()      .extract().body().jsonPath();    List<Order> orders = jsonPath.getList("", Order.class); 

This will extract the objects for a structure like this:

public class Order {  private String id;  public String getId(){ return id; }  public void setId(String id){ this.id = id; }   } 

with the given json:

[  { "id" : "5" },  { "id" : "6" } ]