<insert id="add" parameterType="vo.Category">
<selectKey resultType="java.lang.Short" order="AFTER" keyProperty="id">
SELECT LAST_INSERT_ID()
</selectKey>
insert into category (name_zh, parent_id,
show_order, delete_status, description
)
values (#{nameZh,jdbcType=VARCHAR},
#{parentId,jdbcType=SMALLINT},
#{showOrder,jdbcType=SMALLINT},
#{deleteStatus,jdbcType=BIT},
#{description,jdbcType=VARCHAR}
)
</insert>
在插入操作完成之后，参数category的id属性就已经被赋值了
执行完mapper.insert(category);获取插入返回的主键用category.getId()就可以了