通过父类字段值反序列化Jackson的子类

public class BaseClass {
    private String type;

    // Getter and Setter
}

public class ChildClass1 extends BaseClass {
    // 子类1的特有字段和方法
}

public class ChildClass2 extends BaseClass {
    // 子类2的特有字段和方法
}

ObjectMapper objectMapper = new ObjectMapper();
objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);

String json = "{\"type\":\"ChildClass1\",\"field1\":\"value1\"}";
BaseClass baseClass = objectMapper.readValue(json, BaseClass.class);

BaseClass baseClass = objectMapper.readValue(json, BaseClass.class);
if (baseClass instanceof ChildClass1) {
    ChildClass1 childClass1 = (ChildClass1) baseClass;
    // 处理子类1的逻辑
} else if (baseClass instanceof ChildClass2) {
    ChildClass2 childClass2 = (ChildClass2) baseClass;
    // 处理子类2的逻辑
}