// 非持久化属性.
@Transient
@SuppressWarnings("unchecked")
public List<Integer> getRoleIds() throws Exception {
return ReflectionUtils.fetchElementPropertyToList(roles, "id");
}
// 非持久化属性.
@Transient
public String getRoleNames() throws Exception {
return ReflectionUtils.fetchElementPropertyToString(roles, "name", ", ");
}