fastJson 反序列化子类失败

code • 2022-5-15 • java • 阅读 21

1.在Java bean上添加注解 @JSONType(seeAlso={Dog.class, Cat.class})

@JSONType(seeAlso={Dog.class, Cat.class})
public static class Animal {
}

@JSONType(typeName = "dog")
public static class Dog extends Animal {
    public String dogName;
}

@JSONType(typeName = "cat")
public static class Cat extends Animal {
    public String catName;
}

2.用法

Dog dog = new Dog();
dog.dogName = "dog1001";

String text = JSON.toJSONString(dog, SerializerFeature.WriteClassName);

Dog dog2 = (Dog) JSON.parseObject(text, Animal.class);