You must configure either the server or JDBC driver (via the ‘serverTimezone）

One 、 error message ：

use SpringBoot The project with MyBatis An error occurred when connecting to the database ：You must configure either the server or JDBC driver (via the 'serverTimezone）

Two 、 reason ：

Because of the installation mysql The time zone is not set correctly mysql The default is the time zone of the United States .

3、 ... and 、 terms of settlement ：

（1） Add... After the database name

?&serverTimezone=Asia/Shanghai

Here's the picture ：

（2） Or in the graphical interface Navicat Premium Add a statement to ：

set global time_zone='+8:00';

  Pictured , The problem can be solved .

（3） take MySQL Version down , This problem will not occur in the lower version .

There is time because the creation is springboot project , stay pom Add MySQL rely on , No version number is set , because springboot Internal configuration too . Its configured version number is 8.0.13  Because of MySQL The version of is too high .