Mybatis数据批量插入如何实现

 <insert id="insertUserBatch">
  insert into user(username, birthday, sex, address)
  VALUES
  <foreach collection="list" item="User" index="index" separator=",">
    (
     #{User.username},
     #{User.birthday},
     #{User.sex},
     #{User.address}
    )
  </foreach>
</insert>

@Test
public void insertUserBatch() {
  List<User> users = new ArrayList<User>();

  User user1 = new User();
  user1.setUsername("云澈");
  user1.setSex("男");

  User user2 = new User();
  user2.setUsername("张小凡");
  user2.setSex("男");

  User user3 = new User();
  user3.setUsername("火灵儿");
  user3.setSex("女");

  users.add(user1);
  users.add(user2);
  users.add(user3);


  userMapper.insertUserBatch(users);
  sqlSession.commit();
}