How to get a JSON field in a nested JSON using Rest Assured?

We can get a JSON field in a complex nested JSON using Rest Assured. First, we shall obtain a Response body which is in JSON format from a request. Then convert it to string.

We shall send a GET request via Postman on a mock API URL and observe its Response.

Using Rest Assured, let us get the value of the Price field having the value as $150. It is part of the Items. We shall get the value of the Item Count field by traversing the path - Items.Price.

Example

Code Implementation

import static io.restassured.RestAssured.given; import org.testng.annotations.Test; import io.restassured.RestAssured; import io.restassured.path.json.JsonPath; import io.restassured.response.Response; public class NewTest {    @Test    public void jsonValue() {       //base URI with Rest Assured class       RestAssured.baseURI = "https://run.mocky.io/v3";       //obtain Response from GET request       Response res = given()       .when()       .get("/8ec8f4f7-8e68-4f4b-ad18-4f0940d40bb7");       //convert JSON to string       JsonPath j = new JsonPath(res.asString());       //get a field value from nested JSON       String p = j.getString("Items.Price");       System.out.println("Price is: " + p); } }

Output