Question

I’m using Gson API and created a class like:

public class Person
{
   private String name;
   private JsonObject someInfo;

   public Person()
   {
   }
}

When I serealize an instance of this class using:

Person person = new Person();
person.name = "Charles"
person.someInfo = new JsonObject();
person.someInfo.addProperty("key1","value1");
Gson gson = new Gson();
String jsonStr = gson.toJson(person);

I get the info inside a members properties:

{"members":{"name":"Charles","someInfo":{"key1":"value1"}}}

I’ve noticed that if I declare the Person’s class someInfo global variable as JsonElement instead of JsonObject the info is displayed correctly.

Is there any way to serealize the information using JsonObject?

What I expect is:

{"name":"Charles","someInfo":{"key1":"value1"}}

Answer 1

Use a Map for your someInfo:

public class Person
{
   private String name;
   private Map<Object, Object> someInfo;

   public Person()
   {
   }

}

Person person = new Person();
person.name = "Charles";
person.someInfo = new HashMap<Object, Object>();
person.someInfo.put("key1","value1");

Although it would be better to use proper getters/setters to access Person variables.