mybatis大批量数据高效插入

@Resource
private SqlSessionFactory sqlSessionFactory;

public void insert(List<User> insertList) {
    //具体实现
    SqlSession sqlSession = sqlSessionFactory.openSession(ExecutorType.BATCH);
    try {
        Long mm = System.currentTimeMillis();
        UserDao mapper = sqlSession.getMapper(UserDao.class);
        insertList.stream().forEach(item -> {
            mapper.insert(item);
        });
        sqlSession.clearCache();
        sqlSession.commit();
    } catch (Exception e) {
        throw new RuntimeException(e);
    } finally {
        sqlSession.close();
    }

}