springMVC 接收数组参数，mybatis 接收数组参数，mybatis批量插入/批量删除案例

 public int setPrivilegeForUser(Integer[] privIds, Integer userId) {
        Map<String, Object> map = new HashMap<>();
        map.put("privIds", privIds);
        map.put("userId", userId);
        return this.privilegeMapper.setPrivilegeForUser(map);
    }

批量新增的处理

<insert id="setPrivilegeForUser" parameterType="map">
      insert into user_privilege(user_id, privilege_id) values 
      <foreach collection="privIds" index="index" item="item" separator=",">
          ( #{userId}, #{item} )
      </foreach>
  </insert>

批量删除多个的处理

<delete id="deleteByIds" parameterType="java.util.List">
      delete from user_privilege where id in
      <foreach collection="list" index="index" item="item" open="(" separator="," close=")">   
        #{item}   
      </foreach>  
  </delete>

批量插入传入对象List的例子

<insert id="batchInsertStudent" parameterType="java.util.List">  
    insert into student (id,name,sex,tel,address) values
    <foreach collection="list" item="item" index="index" separator="," >  
        (#{item.id},#{item.name},#{item.sex},#{item.tel},#{item.address})  
    </foreach>  
</insert>