java对象与字节数组互转

使用字节输入流与字节输出流进行转换

对象需要实现Serializable接口

public class Test {
    public static void main(String[] args) throws IOException, ClassNotFoundException {

        final Person person = new Person(18,"小王");

        // 1、对象转字节数组
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
        objectOutputStream.writeObject(person);
        byte[] bytes = byteArrayOutputStream.toByteArray();
        byteArrayOutputStream.close();
        objectOutputStream.close();


        // 2、字节数组转对象
        final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes);
        final ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);
        final Object object = objectInputStream.readObject();
        final Person xiaowang = (Person) object;
        byteArrayInputStream.close();
        objectInputStream.close();
        System.out.println(xiaowang);
    }

    @Data
    @AllArgsConstructor
    static class Person implements Serializable{
        Integer age;
        String name;
    }
}
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