您可以指定用于反序列化列表元素的反序列化器类
使用 @JsonDeserializer 注释的 contentUsing 属性。

You can specify the deserializer class with which to deserialize the elements of the list with the contentUsing attribute of the @JsonDeserializer annotation.

public class Citizen {
    ...
    @JsonDeserializer(contentUsing=MyListDeserializer.class) 
    public void setTickets(List<Tickets> tickets) {
        this.tickets = tickets;
    }
}

使你的反序列化程序扩展 JsonDeserializer&lt ; BaseClass> 并在BaseClass中有一个属性，用于存储具体类的实际类型。

Make your deserializer extend JsonDeserializer<BaseClass> and have a attribute in the BaseClass that stores the actual type of the concrete class.

abstract class BaseTickets {
    String ticketType;
    public String getTicketType()
}

public class MyListDeserializer extends JsonDeserializer<BaseTickets> {

    @Override
    public BaseTickets deserialize(JsonParser jsonParser, DeserializationContext arg1) throws IOException, JsonProcessingException {
        ObjectCodec oc = jsonParser.getCodec();
        JsonNode node = oc.readTree(jsonParser);
        Iterator<JsonNode> elements = node.getElements();
        for (; elements.hasNext();) {
            String type = (String) elements.next().get("ticketType");

            if (type.equals()){
               //create concrete type here
            }
        }
     }

或者如果你想要一个没有公共基类的所有List类型的单个反序列化器，那么使用使用属性，有 MyListDeserializer extend JsonDeserialize< Object> 。要确定列表元素的类型，您必须编写一个自定义序列化程序，将类型信息添加到列表中，然后可以在通用反序列化程序中使用。

Or if you want a single deserializer for all List types with no common base class, then use the using attribute, have MyListDeserializer extend JsonDeserialize<Object>. For determining the type of list element you would have to write a custom serializer that adds the type information to the list which can then be used in the generic deserializer.

public class Citizen {
    ...
    @JsonDeserializer(using=MyListDeserializer.class)
    @JsonSerializer(using=MyListSerializer.class) 
    public void setTickets(List<Tickets> tickets) {
        this.tickets = tickets;
    }
}

public class MyListSerializer extends JsonSerializer<Object> {

    @Override
    public void serialize(Object list, JsonGenerator jgen, SerializerProvider provider) throws IOException, JsonProcessingException {
        @SuppressWarnings("rawtypes")
        jgen.writeStartObject();
        String type = getListType(list);
        jgen.writeStringField("listType", type);
        jgen.writeObjectField("list", list)
    }
}