mybatis学习(四)

1.传统的for循环插入和批量插入的缺点：

2.mybatis批量添加数据的方法：

<insert id="addPersons">
    insert into person(username,email,gender) VALUES
    <foreach collection="persons" item="person" separator=",">
      (#{person.username},#{person.email},#{person.gender})
    </foreach>
  </insert>-->
//下面这种方法必须 数据库必须开启allowMultiqueries=true
<insert id="addPersons">
   <foreach collection="persons" item="person" separator=";">
      insert into person(username,email,gender) VALUES
     (#{person.username},#{person.email},#{person.gender})
    </foreach>
 </insert>