Java对象怎么转换为字节序列

package constxiong.interview; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.io.Serializable; /** * 测试序列化，反序列化 * @author ConstXiong * @date 2019-06-17 09:31:22 */ public class TestSerializable implements Serializable { private static final long serialVersionUID = 5887391604554532906L; private int id; private String name; public TestSerializable(int id, String name) { this.id = id; this.name = name; } @Override public String toString() { return "TestSerializable [id=" + id + ", name=" + name + "]"; } @SuppressWarnings("resource") public static void main(String[] args) throws IOException, ClassNotFoundException { //序列化 ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("TestSerializable.obj")); oos.writeObject("测试序列化"); oos.writeObject(618); TestSerializable test = new TestSerializable(1, "ConstXiong"); oos.writeObject(test); //反序列化 ObjectInputStream ois = new ObjectInputStream(new FileInputStream("TestSerializable.obj")); System.out.println((String)ois.readObject()); System.out.println((Integer)ois.readObject()); System.out.println((TestSerializable)ois.readObject()); } }