1 maven

        <!-- https://mvnrepository.com/artifact/com.caucho/hessian -->
        <dependency>
            <groupId>com.caucho</groupId>
            <artifactId>hessian</artifactId>
            <version>4.0.59</version>
        </dependency>

2

public class Person implements Serializable {

    private String name;
    private Integer age;

    //有无默认构造函数均能正常运行
//    public Person() {
//    }

    public Person(String name, Integer age) {
        this.name = name;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

方法1  使用Serializable接口实现序列化

    public static void main(String[] args) throws IOException, ClassNotFoundException {
//        Person zhansan = new Person();//Person需要实现Serializable接口，不然报错
//        zhansan.setName("高红程");
//        zhansan.setAge(23);

        Person zhansan = new Person("高红程", 22);//正常运行

        //定义一个字节数组输出流
        ByteArrayOutputStream os = new ByteArrayOutputStream();

        //对象输出流
        ObjectOutputStream out = new ObjectOutputStream(os);
        //将对象写入到字节数组输出，进行序列化
        out.writeObject(zhansan);

        byte[] zhansanByte = os.toByteArray();

        //字节数组输出流
        ByteArrayInputStream is = new ByteArrayInputStream(zhansanByte);
        //执行反序列化，从流中读取对象
        ObjectInputStream in = new ObjectInputStream(is);

        Person person = (Person) in.readObject();

        System.out.println("姓名：" + person.getName());
        System.out.println("年龄：" + person.getAge());
    }

//    姓名：高红程
//    年龄：23

3 使用Hessian实现序列化

    public static void main(String[] args) throws IOException {

        Person zhansan = new Person();
        zhansan.setName("高伟刚");
        zhansan.setAge(22);

        ByteArrayOutputStream os = new ByteArrayOutputStream();
        //Hessian的序列化输出
        HessianOutput ho = new HessianOutput(os);
        ho.writeObject(zhansan);

        byte[] zhansanByte = os.toByteArray();

        ByteArrayInputStream is = new ByteArrayInputStream(zhansanByte);
        //Hessian的反序列化读取对象
        HessianInput hi = new HessianInput(is);
        Person person = (Person) hi.readObject();//前面的ho.writeObject(zhansan);必须有，不然报错HessianProtocolException: unknown code for readObject at end of file
        System.out.println("姓名：" + person.getName());
        System.out.println("年龄：" + person.getAge());
    }
//    姓名：高伟刚
//    年龄：22

使用Hessian实现序列化的类，必须要实现Serializable接口，不然报错：

Exception in thread "main" java.lang.IllegalStateException: Serialized class com.weather.weatherexpert.common.model.Person must implement java.io.Serializable