It has no effect, you should transient keyword instead.
Example:
User.java
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Entity
@Table(name = "Users")
public class User implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
private String email;
private String password;
private transient Date loginTime;
}
TestRepository.java
@SpringBootTest
class Demo11ApplicationTests {
@Test
public void test_serializable() throws IOException, ClassNotFoundException {
User u = new User();
u.setEmail("test@fengcaoculture.com");
u.setLoginTime(new Date());
// write to file
FileOutputStream fileOutputStream = new FileOutputStream("person.txt");
ObjectOutputStream objectOutputStream = new ObjectOutputStream(fileOutputStream);
objectOutputStream.writeObject(u);
objectOutputStream.flush();
objectOutputStream.close();
FileInputStream fileInputStream = new FileInputStream("person.txt");
ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream);
User u2 = (User) objectInputStream.readObject();
objectInputStream.close();
assertTrue(u2.getEmail().equals(u.getEmail()));
assertNull(u2.getLoginTime());
}
}