https://mp.weixin.qq.com/s?__biz=MzU4NDc1NDMxMw==&mid=2247486462&idx=1&sn=7c490f075e3b7d704ae8415a6afd3c30&chksm=fd95be18cae2370e4001eada1c3e33efe6dd5fb8afd5024aa17d001f8609b2c4d821a03280c4&mpshare=1&scene=24&srcid=0731Pfqoe5YwXNCvN7dx9vzl&sharer_sharetime=1690810969120&sharer_shareid=117fe97901760e8f49be5fb1b15e01ac#rd
utf8如何转为utf8mb4
https://mathiasbynens.be/notes/mysql-utf8mb4#utf8-to-utf8mb4