Gson ignores my fields while converting

Question

I created a model:

public class UserRequest extends DefaultRequest {
    public String username;
    public String password;
    public String id;

    public Us         


        

Answer 1

An example of how to enforce outputting values even if null. It will output the empty string (or "{}" if an object) instead of null and ignore transients:

package unitest;

import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.TypeAdapter;
import com.google.gson.TypeAdapterFactory;
import com.google.gson.reflect.TypeToken;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonToken;
import com.google.gson.stream.JsonWriter;

public class TheResponse {
    private String status;
    private String message;
    private T data;
    transient private String resource;

    public static void main(String[] args) {

        TheResponse foo = new TheResponse();
        //TheResponse foo = new TheResponse();
        foo.status = "bar";
        foo.data = "baz";

        Gson gson = new GsonBuilder().registerTypeAdapter(TheResponse.class, new GenericAdapter()).create();

        System.out.println(gson.toJson(foo).toString());
    }

    public static class GenericAdapter extends TypeAdapter