mybatis 批量导入

List<User> list = new ArrayList<>();
    User user;
    for (int i = 0; i < 10000; i++) {
        user = new User();
        user.setId("test" + i);
        user.setName("name" + i);
        user.setDelFlag("0");
        list.add(user);
    }
    userService.insertBatch(list);

<insert id="insertBatch">
INSERT INTO t_user
(id, name, del_flag)
VALUES
<foreach collection ="list" item="user" separator =",">
(#{user.id}, #{user.name}, #{user.delFlag})
</foreach >
</insert>

mysql默认接受sql的大小是1048576(1M)，若数据量超过1M会报如下异常：（可通过调整MySQL安装目录下的my.ini文件中[mysqld]段的＂max_allowed_packet = 1M＂）

nested exception is com.mysql.jdbc.PacketTooBigException: Packet for query is too large (5677854 > 1048576).

You can change this value on the server by setting the max_allowed_packet' variable.