public enum ComputerState {
 OPEN(10),   //开启
 CLOSE(11),   //关闭
 OFF_LINE(12),  //离线
 FAULT(200),  //故障
 UNKNOWN(255);  //未知

 private int code;
 ComputerState(int code) { this.code = code; }
}

<typeHandlers>
 <typeHandler handler="org.apache.ibatis.type.EnumOrdinalTypeHandler" javaType="com.example.entity.enums.ComputerState"/>
</typeHandlers>

public interface BaseCodeEnum {
 int getCode();
}

public enum ComputerState implements BaseCodeEnum{
 OPEN(10),   //开启
 CLOSE(11),   //关闭
 OFF_LINE(12),  //离线
 FAULT(200),  //故障
 UNKNOWN(255);  //未知

 private int code;
 ComputerState(int code) { this.code = code; }

 @Override
 public int getCode() { return this.code; }
}

public class CodeEnumUtil {

 public static <E extends Enum<?> & BaseCodeEnum> E codeOf(Class<E> enumClass, int code) {
  E[] enumConstants = enumClass.getEnumConstants();
  for (E e : enumConstants) {
   if (e.getCode() == code)
    return e;
  }
  return null;
 }
}

public class CodeEnumTypeHandler<E extends Enum<?> & BaseCodeEnum> extends BaseTypeHandler<BaseCodeEnum> {

 private Class<E> type;

 public CodeEnumTypeHandler(Class<E> type) {
  if (type == null) {
   throw new IllegalArgumentException("Type argument cannot be null");
  }
  this.type = type;
 }

 @Override
 public void setNonNullParameter(PreparedStatement ps, int i, BaseCodeEnum parameter, JdbcType jdbcType)
   throws SQLException {
  ps.setInt(i, parameter.getCode());
 }

 @Override
 public E getNullableResult(ResultSet rs, String columnName) throws SQLException {
  int i = rs.getInt(columnName);
  if (rs.wasNull()) {
   return null;
  } else {
   try {
    return CodeEnumUtil.codeOf(type, i);
   } catch (Exception ex) {
    throw new IllegalArgumentException("Cannot convert " + i + " to " + type.getSimpleName() + " by ordinal value.",
      ex);
   }
  }
 }

 @Override
 public E getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
  int i = rs.getInt(columnIndex);
  if (rs.wasNull()) {
   return null;
  } else {
   try {
    return CodeEnumUtil.codeOf(type, i);
   } catch (Exception ex) {
    throw new IllegalArgumentException("Cannot convert " + i + " to " + type.getSimpleName() + " by ordinal value.",
      ex);
   }
  }
 }

 @Override
 public E getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
  int i = cs.getInt(columnIndex);
  if (cs.wasNull()) {
   return null;
  } else {
   try {
    return CodeEnumUtil.codeOf(type, i);
   } catch (Exception ex) {
    throw new IllegalArgumentException("Cannot convert " + i + " to " + type.getSimpleName() + " by ordinal value.",
      ex);
   }
  }
 }
}

<typeHandlers>
 <typeHandler handler="com.example.typeHandler.CodeEnumTypeHandler" javaType="com.example.entity.enums.ComputerState"/>
</typeHandlers>

@Configuration
@ConfigurationProperties(prefix = "mybatis")
public class MyBatisConfig {

  private String configLocation;

  private String mapperLocations;

  @Bean
  public SqlSessionFactory sqlSessionFactory(DataSource dataSource, ResourcesUtil resourcesUtil) throws Exception {
    SqlSessionFactoryBean factory = new SqlSessionFactoryBean();
    factory.setDataSource(dataSource);


    // 设置配置文件地址
    ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
    factory.setConfigLocation(resolver.getResource(configLocation));
    factory.setMapperLocations(resolver.getResources(mapperLocations));


    SqlSessionFactory sqlSessionFactory = factory.getObject();

    // ----------- 动态加载实现BaseCodeEnum接口的枚举，使用CodeEnumTypeHandler转换器

    // 取得类型转换注册器
    TypeHandlerRegistry typeHandlerRegistry = sqlSessionFactory.getConfiguration().getTypeHandlerRegistry();


    // 扫描所有实体类
    List<String> classNames = resourcesUtil.list("com/example", "/**/entity");

    for (String className : classNames) {
      // 处理路径成为类名
      className = className.replace('/', '.').replaceAll("\\.class", "");
      // 取得Class
      Class<?> aClass = Class.forName(className, false, getClass().getClassLoader());

      // 判断是否实现了BaseCodeEnum接口
      if (aClass.isEnum() && BaseCodeEnum.class.isAssignableFrom(aClass)) {
        // 注册
        typeHandlerRegistry.register(className, "com.example.typeHandler.CodeEnumTypeHandler");
      }
    }

    // --------------- end

    return sqlSessionFactory;
  }

  public String getConfigLocation() {
    return configLocation;
  }

  public void setConfigLocation(String configLocation) {
    this.configLocation = configLocation;
  }

  public String getMapperLocations() {
    return mapperLocations;
  }

  public void setMapperLocations(String mapperLocations) {
    this.mapperLocations = mapperLocations;
  }
}

@Component
public class ResourcesUtil {

  private final ResourcePatternResolver resourceResolver;

  public ResourcesUtil() {
    this.resourceResolver = new PathMatchingResourcePatternResolver(getClass().getClassLoader());
  }

  /**
   * 返回路径下所有class
   *
   * @param rootPath    根路径
   * @param locationPattern 位置表达式
   * @return
   * @throws IOException
   */
  public List<String> list(String rootPath, String locationPattern) throws IOException {
    Resource[] resources = resourceResolver.getResources("classpath*:" + rootPath + locationPattern + "/**/*.class");
    List<String> resourcePaths = new ArrayList<>();
    for (Resource resource : resources) {
      resourcePaths.add(preserveSubpackageName(resource.getURI(), rootPath));
    }
    return resourcePaths;
  }
}