oracle数据库在mybatis中使用uuid

<insert id="insert" parameterType="com.xxx.SystemDepartment">

    <selectKey keyProperty="id" resultType="String" order="BEFORE">

        select sys_guid() from dual

    </selectKey>

    insert into SYSTEM_DEPARTMENT (ID,DEPNAME, SUPERID, SORT, STATE)

    values ( #{id,jdbcType=VARCHAR},#{depname,jdbcType=VARCHAR},

    #{superid,jdbcType=DECIMAL}, #{sort,jdbcType=DECIMAL},

    #{state,jdbcType=DECIMAL})

</insert>