项目场景：

在maven创建mybatis项目中，出现Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: 问题

问题描述：

翻译一下报错信息，就是jdbc时区不对

//服务器时区值''�й���׼ʱ��'`。
//如果要利用时区支持，则必须配置服务器或JDBC驱动程序（通过“serverTimezone”配置属性）以使用更特定的时区值。
Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: 
The server time zone value '�й���׼ʱ��' 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 specific time zone value if you want to utilize time zone support.
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
	at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
	at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:85)
	at com.mysql.cj.util.TimeUtil.getCanonicalTimezone(TimeUtil.java:134)
	at com.mysql.cj.protocol.a.NativeProtocol.configureTimezone(NativeProtocol.java:2186)
	at com.mysql.cj.protocol.a.NativeProtocol.initServerSession(NativeProtocol.java:2209)
	at com.mysql.cj.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:1318)
	at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:967)
	at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:826)
	... 23 more

解决方案：

处理方式也很简单，修改你mybatis.xml关于jdbc的配置，在url中加一个serverTimezone=UTC即可

<dataSource type="POOLED">x
     <property name="driver" value="com.mysql.jdbc.Driver"/>
     //就是下面这句
     <property name="url" value="jdbc:mysql://localhost:3306/x?serverTimezone=UTC"/>
     <property name="username" value="root"/>
     <property name="password" value=""/>
</dataSource>