之前尝试了很多种，学习了这篇成功调试出来了。
https://blog.csdn.net/zz18435842675/article/details/99675926?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522164649346716780264034620%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&request_id=164649346716780264034620&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2allfirst_rank_ecpm_v1~rank_v31_ecpm-3-99675926.pc_search_insert_es_download&utm_term=+maven+Cannot+load+connection+class+because+of+underlying+exception%3A+com.mysql.cj.exceptions.WrongArgumentEx&spm=1018.2226.3001.4187
jdbc.properties:
jdbc.driver = com.mysql.cj.jdbc.Driver jdbc.url = jdbc:mysql://localhost:3306/数据库的名字?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone = GMT jdbc.username = root jdbc.password = 你的密码
pom.xml
mysql
mysql-connector-java
8.0.22
然后再reload一下maven就行了
