jackson2

I have a service from where I get a json string response like as shown below { "id": "123", "name": "John" } I consume the rest call using HttpClient and converts the json string to Map<String, String> like as shown below. String url= "http://www.mocky.io/v2/5979c2f5110000f4029edc93"; HttpClient client = HttpClientBuilder.create().build(); HttpGet httpGet = new HttpGet(url); httpGet.setHeader("Content-Type", "application/json"); HttpResponse httpresponse = client.execute(httpGet); String response = EntityUtils.toString(httpresponse.getEntity()); ObjectMapper mapper = new ObjectMapper(); Map

It is possible to deserialize to a class with private fields and a custom argument constructor without using annotations and without modifying the class, using Jackson? I know it's possible in Jackson when using this combination: 1) Java 8, 2) compile with "-parameters" option, and 3) the parameters names match JSON. But it's also possible in GSON by default without all these restrictions. For example: public class Person { private final String firstName; private final String lastName; private final int age; public Person(String firstName, String lastName, int age) { this.firstName = firstName

I am trying to use the @JsonIdentityInfo from Jackson 2 as described here . For testing purposes I created the following two classes: public class A { private B b; // constructor(s) and getter/setter omitted } public class B { private A a; // see above } Of course, the naive approach failes: @Test public void testJacksonJr() throws Exception { A a = new A(); B b = new B(a); a.setB(b); String s = JSON.std.asString(a);// throws StackOverflowError Assert.assertEquals("{\"@id\":1,\"b\":{\"@id\":2,\"a\":1}}", s); } Adding @JsonIdentityInfo(generator=ObjectIdGenerators.IntSequenceGenerator.class,