Springboot JPA 枚举Enum类型存入到数据库的操作

public enum EnumType {
 /** Persist enumerated type property or field as an integer. */
 ORDINAL,
 /** Persist enumerated type property or field as a string. */
 STRING
}

/**
 * @param <DB> : 保存到数据库的数据类型
 * @author peter
 * date: 2019-05-15 16:57
 **/
public interface PersistEnum2DB<DB> {
 DB getData();
}

import javax.persistence.AttributeConverter;
/**
 * @param <ATTR> 实体类中枚举的类型，需实现{@link PersistEnum2DB} 接口
 * @param <DB> 保存到数据库的数据类型
 * @author peter
 * date: 2019-05-15 16:59
 */
public abstract class AbstractEnumConverter<ATTR extends Enum<ATTR> & PersistEnum2DB<DB>, DB> implements AttributeConverter<ATTR, DB> {
 private final Class<ATTR> clazz;
 public AbstractEnumConverter(Class<ATTR> clazz) {
 this.clazz = clazz;
 }
 @Override
 public DB convertToDatabaseColumn(ATTR attribute) {
 return attribute != null ? attribute.getData() : null;
 }
 @Override
 public ATTR convertToEntityAttribute(DB dbData) {
 if (dbData == null) return null;
 ATTR[] enums = clazz.getEnumConstants();
 for (ATTR e : enums) {
  if (e.getData().equals(dbData)) {
  return e;
  }
 }
 throw new UnsupportedOperationException("枚举转化异常。枚举【" + clazz.getSimpleName() + "】,数据库库中的值为：【" + dbData + "】");
 }
}

import com.tourcoo.parking.enums.convert2db.AbstractEnumConverter;
import com.tourcoo.parking.enums.convert2db.PersistEnum2DB;
/**
 * @author peter
 * create: 2019-05-15 14:33
 **/
public enum PayStatus implements PersistEnum2DB<Integer> {
 NONPAY(0, "未支付"),
 PAID(1, "已支付");
 private int code;
 private String msg;
 PayStatus(int code, String msg) {
 this.code = code;
 this.msg = msg;
 }
 public int getCode() {
 return code;
 }
 public String getMsg() {
 return msg;
 }
 @Override
 public Integer getData() {
 return code;
 }
 public static class Converter extends AbstractEnumConverter<PayStatus, Integer> {
 public Converter() {
  super(PayStatus.class);
 }
 }
}

 //支付状态
 @Convert(converter = PayStatus.Converter.class)
 private PayStatus payStatus;

public enum Gender {
 
 MALE( 'M' ),
 FEMALE( 'F' );
 
 private final char code; 
 Gender(char code) {
 this.code = code;
 }
 
 public static Gender fromCode(char code) {
 if ( code == 'M' || code == 'm' ) {
  return MALE;
 }
 if ( code == 'F' || code == 'f' ) {
  return FEMALE;
 }
 throw new UnsupportedOperationException(
  "The code " + code + " is not supported!"
 );
 }
 
 public char getCode() {
 return code;
 }
}

@Entity
@Data
@ToString
@Table(name = "user")
public class User {
 @Id
 @GeneratedValue(strategy = GenerationType.IDENTITY)
 private Integer id;
 private String name;
 @Convert(converter = GenderConverter.class)
 private Gender gender;
}

public class GenderConverter implements AttributeConverter<Gender,Character> {
 
 @Override
 public Character convertToDatabaseColumn(Gender gender) {
 if ( gender == null ) {
  return null;
 } 
 return gender.getCode();
 }
 
 @Override
 public Gender convertToEntityAttribute(Character value) {
 if ( value == null ) {
  return null;
 } 
 return Gender.fromCode( value );
 }
}

@SpringBootTest
@Slf4j
public class AttributeConverterTest {
 
 @Resource
 private UserRepository userRepository;
 
 @Test
 void should_user__when__give_user() {
 //given
 User user1 = new User(null,"Janny", Gender.FEMALE);
 User user2 = new User(null,"Tom", Gender.MALE);
 //when
 User actUser1 = userRepository.save(user1);
 User actUser2 = userRepository.save(user2);
 //then
 Assertions.assertNotNull(actUser1);
 Assertions.assertNotNull(actUser2);
 }
}