初学mybatis的一个小问题

这是一个StudentMapper的xml配置文件

数据库里phone是VARCHAR类型xxx-xxx-xxx这种的，我想把phone根据“-”分割然后映射给Student里的phone但是做不到

这个能达到吗

<resultMap type="Student" id="StudentWithAddressResult">
    <id property="studId" column="id" />
       <result property="name" column="name" />
       <result property="email" column="email" />
        <result property="dob" column="dob" />
        <!-- 重点下面这一行 -->
        <result property="phone" column="phone" />
       <association property="address" javaType="Address">
            <id property="addrId" column="addr_id"/>
            <result property="street" column="street"/>
            <result property="city" column="city"/>
            <result property="state" column="state"/>
            <result property="zip" column="zip"/>
            <result property="country" column="country"/>
        </association>
</resultMap>

这是Student类

    private Integer studId;
    private String name;
    private String email;
    private Date dob;
    private PhoneNumber phone;
    //private String phone;
    private Address address;

    public Student() {}

这是PhoneNumber类

    private String countryCode;
    private String stateCode;
    private String number;

    public PhoneNumber() {}

完全ojbk，自己去实现TypeHandler就行了