我正在嘗試彈簧數(shù)據(jù) JDBC (1.1.0.M3)。我有一個包含電子郵件屬性（電子郵件類）的 Formateur（教師）類。電子郵件是一個不可變的類。當(dāng)我從數(shù)據(jù)庫中檢索所有教師時，我有以下內(nèi)容異常：java.lang.UnsupportedOperationException：無法設(shè)置不可變屬性 fr.yestech.data.jdbc.domain.Email.email看來spring data JDBC對final屬性不好用！public class Formateur {    private @Id Long id;    private String nom;    @Embedded    private Email email;...}電子郵件類（不可變類，所以沒有設(shè)置器?。﹑ublic final class Email {    private final String email;    private static final Pattern EMAIL_PATTERN = Pattern.compile("^[_A-Za-z]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$");    private Email(String email) {      Objects.requireNonNull(email, "Adresse email doit être non null!");        if (!EMAIL_PATTERN.matcher(email).matches())          throw new IllegalArgumentException("L'adresse email est                      invalide !");        this.email = email;    }    public static Email of(String email) {        return new Email(email);    }...}應(yīng)用@SpringBootApplicationpublic class SpringJdbcApplication {    public static void main(String[] args) {        SpringApplication.run(SpringJdbcApplication.class, args);    }    @Bean    ApplicationRunner applicationRunner(FormateurRepository formateurRepository) {        return args -> {            Formateur teacher = Formateur.of("YesTech", Email.of("yestech@email.com"), Adresse.of("Goux"));            formateurRepository.save(teacher);             formateurRepository.findAll().forEach(System.out::println);        };    }}