json deserialize field of internal object with jackson using data binding - json

Question

I have a json like this
{
"name": "john",
"photo_urls":
{
"large": "http://www.server.com/john_photo.jpg"
}
}
and I would like to deserialize it in one class, like this
public class Person
{
String name;
String photoUrl;
}
instead of this
public class Person
{
String name;
public class photo_urls
{
String large;
}
}
Is it possible to do it with Jackson using Data Binding and the annotation #JsonProperty? Or is it necessary to use the streaming API instead?
Thanks for your help.

Answer 1

You can consider to have a setter method or a constructor parameter of the Map<String,String> type from which you can get the url field value. Here is an example:
public class JacksonDeserialize {
private static final String JSON = "{\n" +
" \"name\": \"john\",\n" +
" \"photo_urls\":\n" +
" {\n" +
" \"large\": \"http://www.server.com/john_photo.jpg\"\n" +
" }\n" +
"}";
public static class Person
{
private String name;
private String photoUrl;
#JsonCreator
public Person(#JsonProperty("name") String name, #JsonProperty("photo_urls") Map<String, String> photoUrl) {
this.name = name;
this.photoUrl = photoUrl.get("large");
}
#Override
public String toString() {
return "Person{" +
"photoUrl='" + photoUrl + '\'' +
", name='" + name + '\'' +
'}';
}
}
public static void main(String[] args) throws IOException {
ObjectMapper mapper = new ObjectMapper();
System.out.println(mapper.readValue(JSON, Person.class));
}
}
Output:
Person{photoUrl='http://www.server.com/john_photo.jpg', name='john'}