JSON - deserialization of dynamic object using Gson

Question

Let's imagine I have a Java class of the type:

public class MyClass
{
   public String par1;
   public Object par2;
}

Then I have this:

String json = "{"par1":"val1","par2":{"subpar1":"subval1"}}";

Gson gson = new GsonBuilder.create();
MyClass mClass = gson.fromJson(json, MyClass.class);

The par2 JSON is given to me from some other application and I don't ever know what are it's parameter names, since they are dynamic.

My question is, what Class type should par2 variable on MyClass be set to, so that the JSON String variable is correctly deserialized to my class object?

Thanks

Answer 1

Check out Serializing and Deserializing Generic Types from GSON User Guide:

public class MyClass<T>
{
   public String par1;
   public T par2;
}

To deserialize it:

Type fooType = new TypeToken<Myclass<Foo>>() {}.getType();
gson.fromJson(json, fooType);

Hope this help.