Idea中默认用4个半角空格进行缩进,习惯用制表符,修改如下: File > Settings > Editor > Code Style > Java > Tabs and Indents > Use tab character 相关文章: 2022-01-02 2022-12-23 2022-12-23 2021-04-16 2021-07-25 2021-10-29 2022-12-23