JavaSE：https://www.bilibili.com/video/BV1mE411x7Wt/?spm_id_from=333.999.0.0&vd_source=c943e4fb275abc5c4d502237dac76144
mybatis：https://www.bilibili.com/video/BV1JP4y1Z73S/?p=6&spm_id_from=333.880.my_history.page.click&vd_source=c943e4fb275abc5c4d502237dac76144