mybatis 返回 插入主键id

<insert id="createOrder" parameterType="map">
   <selectKey resultType="long" order="BEFORE" keyProperty="id">
      select  seq_id.nextval from dual
   </selectKey>
         insert into t_order(
         order_id,
         order_code,
         order_price,
         order_address,
         order_tel,
         order_status) values (
         #{id},
         #{order_code,jdbcType=VARCHAR},
         #{order_price,jdbcType=NUMERIC},
         #{order_address,jdbcType=VARCHAR},
         #{order_tel,jdbcType=VARCHAR},0)
</insert>

 

dao

public int  createOrder(Map params){
   return  this.template.insert("Order.createOrder",params);
}

service
@Transactional
public void addOrder(Map ordeerParam){
    dao.createOrder(ordeerParam);
    String orderId = ordeerParam.get("id").toString();
}