学习SpringBoot也没有多久，今天SpringBoot连接数据库的时候报如下错误：
java.sql.SQLException: 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 specifc time zone value if you want to utilize time zone support.
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:545) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:513) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:505) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:479) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:489) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:69) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1606) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:633) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:347) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:219) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:310) ~[tomcat-jdbc-8.5.16.jar:na]
at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:203) ~[tomcat-jdbc-8.5.16.jar:na]
at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:735) [tomcat-jdbc-8.5.16.jar:na]
at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:667) [tomcat-jdbc-8.5.16.jar:na]
at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:482) [tomcat-jdbc-8.5.16.jar:na]
at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:154) [tomcat-jdbc-8.5.16.jar:na]
at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:118) [tomcat-jdbc-8.5.16.jar:na]
at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:107) [tomcat-jdbc-8.5.16.jar:na]
at org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection(DataSourceProxy.java:131) [tomcat-jdbc-8.5.16.jar:na]
at com.self.spring.springboot3.App.main(App.java:21) [classes/:na]
Caused by: com.mysql.cj.core.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 specifc time zone value if you want to utilize time zone support.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_91]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_91]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_91]
at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_91]
at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:54) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:73) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.jdbc.util.TimeUtil.getCanonicalTimezone(TimeUtil.java:118) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.mysqla.MysqlaSession.configureTimezone(MysqlaSession.java:293) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:2399) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:1739) ~[mysql-connector-java-6.0.5.jar:6.0.5]
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1596) ~[mysql-connector-java-6.0.5.jar:6.0.5]
... 13 common frames omitted
我们用mavean加载mysql驱动包的时候，一般如下加载的：
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>6.0.5</version>
</dependency>
但是我们使用springboot框架来编写程序就会报错误，并且在pom.xml中也会有相关提示：
解决方案：我把mysql的版本号去掉就可以正常运行了。