// Bean 对象
 public class User {
    private float age;
    public float getAge() {
        return age;
    }
    public void setAge(float age) {
        this.age = age;
    }
    @Override
    public String toString() {
        return "User{" +
                "age=" + age +
                '}';
    }
}

// 反序列化代码
User user = JSON.parseObject("{\"age\":\"0.9390308260917664\"}", User.class);
 System.out.println(user);