使用杰克逊在Android中使用相同的密钥但类型不同的JSON反序列化JSON

在构建解决方案时，我面临两个问题：

1. Json结构与单个不匹配 DataObject
2. 将相同属性反序列化为不同类型的Java对象的原始问题。

我通过构造JavaType对象来解决第一个问题，该对象告诉Jackson所涉及集合的通用类型。有两个这样的集合：一Map，由与主要单个条目"data"和价值List的DataObject小号

第二个问题，我使用杰克逊（Jackson）功能解决，该功能@JsonAnySetter指示杰克逊（Jackson）为所有无法识别的属性调用一个方法。为此，我添加@JsonIgnore了配置文件变量以确保Jackson确实无法识别它。现在，杰克逊为两个输入json调用相同的方法

这是新DataObject类：

@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonIgnoreProperties(ignoreUnknown = true)
public class DataObject
{
    @JsonProperty("profession")
    public String profession;

    @JsonIgnore // forcing jackson to not recognize this property
    public ProfileObject profile;

    @JsonProperty("thanks")
    public ThanksObject thanks;

    public String getProfession() { return profession; }
    public void   setProfession(String p) { profession = p; }

    public ThanksObject getThanks() { return thanks; }
    public void         setThanks(ThanksObject t) { thanks = t; }

    public ProfileObject getProfile() { return profile; }
    public void          setProfile(ProfileObject p) { profile = p; }

    @JsonAnySetter
    public void setProfileFromJson(String name, Object value)
    {
        // if value is single String, call appropriate ctor 
        if (value instanceof String) {
            profile = new ProfileObject((String)value);
        }
        // if value is map, it must contain 'val1',  'val2' entries
        if (value instanceof Map) {
            ProfileSubObject profileSubObject =
                    new ProfileSubObject(((Map<String, String>)value).get("val1"), ((Map<String, String>)value).get("val2"));
            profile = new ProfileObject(profileSubObject);
        }
        // error?
    }
}

这是我的测试方法，其中包括我提到的Java类型构造：

public static void main(String[] args)
{
    try (Reader reader = new FileReader("C://Temp/xx2.json")) {
        ObjectMapper mapper = new ObjectMapper();
        // type of key of map is String  
        JavaType stringType = TypeFactory.defaultInstance().constructType(String.class);
        // type of value of map is list of DataObjects  
        JavaType listOfDataObject = TypeFactory.defaultInstance().constructCollectionType(List.class, DataObject.class);
        // finally, construct map type with key and value types  
        JavaType rootMap = TypeFactory.defaultInstance().constructMapType(HashMap.class, stringType, listOfDataObject);

        Map<String ,List<DataObject>> m = mapper.readValue(reader, rootMap);

        DataObject do1 = m.values()
                // get first (only?) value in map (it is list)
                .stream().findFirst().orElse(Collections.emptyList())
                // get first (only?) item in list - it is the DataObject
                .stream().findFirst().orElse(null);

        System.out.println(do1.profile);
        System.out.println(do1.profile.profile);
        System.out.println(do1.profile.profileSubObject.val1 + " " + do1.profile.profileSubObject.val2);
    } catch (Exception e) {
        e.printStackTrace();
    }
}