1、什么是序列化和反序列化

序列化：把对象转换为字节序列的过程。

反序列化：把字节序列恢复成对象的过程。

2、被序列化的类需要实现serializable接口，只是为了标注该对象是可以被序列化的，并没有需要实现的方法。

3、示例：

新建Student类

import java.io.Serializable;public class Student implements Serializable{    private String name;    private int age;    private static final long serialVersionUID = 1L;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }}

新建转换工具类SerializeUtils：

import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;public class SerializeUtils {    public byte[] Serialize(Object object) {        ByteArrayOutputStream byteArrayOutPutStream = new ByteArrayOutputStream();        try {            ObjectOutputStream objectOutPutStream = new ObjectOutputStream(byteArrayOutPutStream);            //将对象写入到字节数组中进行序列化            objectOutPutStream.writeObject(object);            return byteArrayOutPutStream.toByteArray();        }catch (IOException e) {            e.printStackTrace();        }        return null;    }    public Object deSerialize (byte[] bytes) {        //将二进制数组导入字节数据流中        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes);        try {            //将字节数组留转化为对象            ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);            return objectInputStream.readObject();        }catch (IOException e) {            e.printStackTrace();        }catch (ClassNotFoundException e) {            e.printStackTrace();        }        return null;    }}

新建测试类test_serializable:

public class test_serializable {    public static void main(String[] args) {        SerializeUtils serializeUtils = new SerializeUtils();        Student student = new Student();        student.setName("kobe");        student.setAge(20);        byte[] serializObject = serializeUtils .Serialize(student);        System.out.println(serializObject);        Student e = (Student)serializeUtils.deSerialize(serializObject);        System.out.println("Name: " + e.getName()+",Age: " + e.getAge());    }}