Jackson多态类型数据的反序列化

http://wiki.fasterxml.com/JacksonPolymorphicDeserialization

json串中要有property中指明的字段,如@class，才可以解析成功

public class Zoo {    public Animal animal;}@JsonTypeInfo(use = JsonTypeInfo.Id.CLASS, include = JsonTypeInfo.As.PROPERTY, property = "@class")@JsonSubTypes({        @JsonSubTypes.Type(value = Dog.class, name = "Dog"), @JsonSubTypes.Type(value = Cat.class, name = "Cat")})static class Animal {    // All animals have names, for our demo purposes...     public String name;    protected Animal() {    }}static class Dog extends Animal {    public double barkVolume;    // in decibels     public Dog() {    }}static class Cat extends Animal {    boolean likesCream;    public int lives;    public Cat() {    }}