Gson转换同父类不同子类列表

import com.google.gson.*;import com.google.gson.reflect.TypeToken;import java.lang.reflect.Type;import java.util.ArrayList;import java.util.List;public class Test {    public static void main(String[] args) {        String resultStr = "{'code':'00','personList':[{\"id\":\"123456\",\"product_category\":\"101\",\"name\":\"xiaofeifei\",\"age\":\"25\",\"ranking\":\"0\"},{\"id\":\"123456\",\"product_category\":\"201\",\"name\":\"xiaofeifei\",\"age\":\"25\",\"ranking\":\"1\"}]}";        Gson gson = new GsonBuilder().registerTypeAdapter(RANKING.class, new JsonDeserializer<RANKING>() {            @Override            public RANKING deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {                int ranking = json.getAsJsonPrimitive().getAsInt();                return RANKING.values()[ranking];            }        }).registerTypeAdapter(new TypeToken<List<BasePerson>>(){}.getType(), new JsonDeserializer<List<BasePerson>>() {            @Override            public List<BasePerson> deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {                List list = new ArrayList<BasePerson>();                JsonArray ja = json.getAsJsonArray();                for (JsonElement je : ja) {                    String type = je.getAsJsonObject().get("product_category").getAsString();                    list.add(context.deserialize(je, PersonType.getByProductCategory(type).getType()));                }                return list;            }        }).create();        ResultEntity result = gson.fromJson(resultStr,ResultEntity.class);    }}class BasePerson{    private Long id;    private String product_category;    private RANKING ranking;    public RANKING getRanking() {        return ranking;    }    public void setRanking(RANKING ranking) {        this.ranking = ranking;    }    public String getProduct_category() {        return product_category;    }    public void setProduct_category(String product_category) {        this.product_category = product_category;    }    public Long getId() {        return id;    }    public void setId(Long id) {        this.id = id;    }}class PersonWithName extends BasePerson {    private String name;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }}class PersonWithAge extends BasePerson{    private Integer age;    public Integer getAge() {        return age;    }    public void setAge(Integer age) {        this.age = age;    }}enum PersonType {    WITHNAME("名称", PersonWithName.class, "101"),    WITHAGE("年龄", PersonWithAge.class, "201");    private String displayName;    private Class<? extends BasePerson> type;    private String product_category;    public String getDisplayName() {        return displayName;    }    public void setDisplayName(String displayName) {        this.displayName = displayName;    }    public Class<? extends BasePerson> getType() {        return type;    }    public void setType(Class<? extends BasePerson> type) {        this.type = type;    }    public String getProduct_category() {        return product_category;    }    public void setProduct_category(String product_category) {        this.product_category = product_category;    }    private PersonType(String displayName, Class<? extends BasePerson> type , String product_category) {        this.displayName = displayName;        this.type = type;        this.product_category = product_category;    }    public static PersonType getByProductCategory(String category){        for(PersonType t : values()){            if(t.product_category.equals(category)){                return t;            }        }        return null;    }}enum RANKING {    TOP, BOTTOM;}class ResultEntity{    String code;    List<BasePerson> personList;    public List<BasePerson> getPersonList() {        return personList;    }    public void setPersonList(List<BasePerson> personList) {        this.personList = personList;    }    public String getCode() {        return code;    }    public void setCode(String code) {        this.code = code;    }}