TestGsonRegistry.java

package org.fenixedu.bennu.core.json;

import java.lang.reflect.Type;

import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;

class Serializer implements JsonSerializer<User> {

    @Override
    public JsonElement serialize(User src, Type typeOfSrc, JsonSerializationContext context) {
        JsonObject obj = new JsonObject();
        obj.addProperty("name", src.getName());
        return obj;
    }

}

class OtherSerializer implements JsonSerializer<User> {

    @Override
    public JsonElement serialize(User src, Type typeOfSrc, JsonSerializationContext context) {
        JsonObject obj = new JsonObject();
        obj.addProperty("name", src.getName());
        obj.addProperty("cenas", "outras cenas");
        return obj;
    }

}