Java序列化与Serializable（四）父类实现如果未实现序列化，子类如何序列化父类的field

看源码的注释，有这么一句

To allow subtypes of non-serializable classes to be serialized, the * subtype may assume responsibility for saving and restoring the * state of the supertype's public, protected, and (if accessible) * package fields.

也就是说，如果父类没有序列化，父类的field又想要参与子类的序列化过程，则这个过程要子类来完成

看代码

public class BaseBean   {
   public String property1;
   public String property2;
   public int property3;

   public BaseBean(String id){

   }

   public BaseBean(){}

}

public class TestBean extends BaseBean implements Serializable {
    public String desc;
    public static final int serialVersionUID = 1;

    public TestBean(String id) {
        super(id);
    }

    @Override
    public String toString() {
        return "TestBean{" +
                "desc='" + desc + '\'' +
                ", property1='" + property1 + '\'' +
                ", property2='" + property2 + '\'' +
                ", property3=" + property3 +
                '}';
    }

    private void writeObject(java.io.ObjectOutputStream out)
            throws IOException {
        out.defaultWriteObject();//先序列化对象
        out.writeUTF(property1);//再序列化父类的域
        out.writeUTF(property2);
        out.writeInt(property3);
    }

    private void readObject(java.io.ObjectInputStream in)
            throws IOException, ClassNotFoundException {
        in.defaultReadObject();//先反序列化对象
       property1 = in.readUTF();//再反序列化父类的域
       property2 = in.readUTF();
        property3=  in.readInt();
    }

}

 public void serialization(View view) {
        try {

            TestBean testBean = new TestBean("");
            testBean.property1 = "属性88999988-property1__";
            testBean.property2 = "属性88999988-property2__";
            testBean.desc = "我是testbean88999988-desc__";
            testBean.property3 = 88888803;

            ObjectOutputStream objectOutputStream = new ObjectOutputStream(new FileOutputStream("/sdcard/aaatest.txt"));
            objectOutputStream.writeObject(testBean);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void deserialization(View view) {
        ObjectInputStream objectInputStream = null;
        try {
            objectInputStream = new ObjectInputStream(new FileInputStream("/sdcard/aaatest.txt"));
            TestBean testBean = (TestBean) objectInputStream.readObject();
            Log.i(TAG,"deserialization"+testBean.toString());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

通过定制序列化和反序列化过程。则父类的field也可以参与子类的序列化过程了。