java.io.Externalizable#readExternal ( )源码实例Demo

private void externalize(final Externalizable original, final Externalizable copy) throws IOException, ClassNotFoundException {
    final ByteArrayOutputStream baos = new ByteArrayOutputStream();
    final ObjectOutputStream out = new ObjectOutputStream(baos);

    original.writeExternal(out);
    out.close();

    final ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
    final ObjectInputStream in = new ObjectInputStream(bais);

    copy.readExternal(in);
}
 

@Override
public Externalizable read(Kryo kryo, Input input, Class<Externalizable> type) {
    try {
        Externalizable e = kryo.newInstance(type);
        KryoObjectInput koi = new KryoObjectInput(input,kryo);
        e.readExternal(koi);
        return e;
    } catch (IOException | ClassNotFoundException e1) {
        throw new RuntimeException(e1);
    }
}
 

public static void readObject(@Nonnull final InputStream is, @Nonnull final Externalizable dst)
        throws IOException, ClassNotFoundException {
    ObjectInputStream ois = new ObjectInputStream(is);
    dst.readExternal(ois);
}