mybatis添加时如何获得主键值

第一种写法，

<insert id="insert" parameterType="com.itmayiedu.entity.Gifts" useGeneratedKeys="true" keyProperty="giftsid" >insert into gifts (giftsid,proId, giftsName)values (LAST_INSERT_ID(giftsid),#{proid,jdbcType=INTEGER},#{giftsname,jdbcType=VARCHAR})</insert>

第二种写法，获得自动增长ID

 <selectKey  resultType="int"  order="AFTER"  keyProperty="giftsid">            SELECT LAST_INSERT_ID()         </selectKey>insert into gifts (giftsid,proId, giftsName)values (#{giftsid},#{proid,jdbcType=INTEGER},#{giftsname,jdbcType=VARCHAR})