错误: The server time zone value ‘йʱ’ is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.
原因:时区错误(jdbc 6.0以上都有这个问题)
修改:在url的字符串中添加 servertime=UTC
String url="jdbc:mysql://localhost:3306/school?useUnicode=true&characterEncoding=utf8&useSSL=true&serverTimezone=UTC"; useUnicode=true 表示使用Unicode字符,因此可以使用中文characterEncoding=utf8 设置编码方式useSSL=true 设置安全连接serverTimezone=UTC 设置全球标准时间