REST Assured - Generic List deserialization

Question

I found a way to achieve what I wanted:

List<Person> persons = given().when().get("person/").as(Person[].class);

UPDATE: Using Rest-Assured 1.8.1, looks like cast to List is not supported anymore. You need to declare and object array like this:

Person[] persons = given().when().get("person/").as(Person[].class);

for those who found out that accepted answer does not work anymore.

    List<Entity> list = new ArrayList<>();
    list = given()
            .contentType(CONTENT_TYPE)
        .when()
            .get(getRestOperationPath())
        .then()
            .extract().body().as(list.getClass());

hopefully, you understand that getRestOperationPath is returning rest operation path; and CONTENT_TYPE is placeholder for your content type (application/json for example)

upd: checked different versions, behavior differs depending on version, so you might want to try different approaches

upd2: cleaner solution was pointed by @Arigion in comments:

to use .extract().body().jsonPath().getList(".", Entity.class);

To extract a Java List, and not an Array, from a JSON API response, you just have to remember to use jsonPath rather than as:

List<Person> persons = given()
        .when()
        .get("/person")
        .then()
        .extract()
        .body()
        // here's the magic
        .jsonPath().getList(".", Person.class);

Your json path can point to anywhere you expect to have a list of json objects in your body. in this example (and working for your question) it just points to the json root.

sidenode: rest-assured is internally using jackson for deserialization (for .jsonPath as well as .as)

You could also do this if you were interested in using "expect()"

expect().
 body("get(0).firstName", equalTo("Mike")).
when().
 get("person/");

This was my case

If anyone's still looking. Using Java 1.8 and RestAssured 2.9 the solution is really simple and it does not throw "Unchecked Warning".

return Arrays.asList(given()
            .when()
            .get("restPath")
            .then()
            .extract()
            .response()
            .body()
            .as(Player[].class));