Mybatis获取自增主键的两种方式

<insert id="saveOne" parameterType="com.buwei.entity.User" >
    INSERT into user(name, password) value(#{name},#{password})
    <selectKey keyProperty="id" order="AFTER" resultType="int">
        select  last_insert_id()
    </selectKey>
</insert>

<insert id="saveOne" parameterType="com.buwei.entity.User"  useGeneratedKeys="true" keyProperty="id">
    INSERT into user(name, password) value(#{name},#{password})
</insert>