反序列化继承列表的集合

时间:2019-06-27 22:40:33

标签: java json serialization jackson deserialization

我正在尝试反序列化这样的接口:

public interface MyCollection<T> extends List<T> {...}

MyCollection有多种实现方式,例如public class MyBasicCollection<String>public class MyOtherCollection<String>

我已经在界面上添加了注释,如下所示:

@JsonTypeInfo(
    use = JsonTypeInfo.Id.NAME,
    property = "type")
@JsonSubTypes({
    @JsonSubTypes.Type(value = MyBasicCollection.class, name = "basic"),
    @JsonSubTypes.Type(value = MyOtherCollection.class, name = "other")
})
public interface MyCollection<T> extends List<T> {...}

要序列化和反序列化的详细代码如下:

MyCollection<String> testCollection = new MyBasicCollection<String>();
ObjectMapper mapper = new ObjectMapper();
String serializedString = mapper.writeValueAsString(testCollection);
MyCollection<String> reconstructed = mapper.readValue(serializedString, new TypeReference<MyCollection<String>>(){});

我会得到

  

找不到非具体Collection类型的反序列化器

JsonMappingException。

但是,如果我将最后一行更改为

MyCollection<String> reconstructed = mapper.readValue(serializedString, new TypeReference<MyBasicCollection<String>>(){});

它运行完美。

有没有办法使反序列化与多态类型一起工作?

0 个答案:

没有答案