主键不自增:返回值是插入的条数
<insert id="add" parameterType="EStudent"> insert into TStudent(name, age) values(#{name}, #{age}) </insert
主键自增:
<insert id="add" parameterType="EStudent" useGeneratedKeys="true" keyProperty="id"> insert into TStudent(name, age) values(#{name}, #{age}) </insert>
原文地址:https://blog.csdn.net/qq_37186247/article/details/85238506