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mysql|mysql异常

mysql

com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
java.sql.SQLException: The server time zone value '???ú±ê×??±??' 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.

3.java.sql.SQLException: The server time zone value '?D1ú±ê×?ê±??' is unrecognized or represents more than one time
时区问题导致报错；
有人说直接执行查询：set GLOBAL time_zone='+8:00'; 但这样只是暂时解bao决问题，下次打开工程还会报错！
最终解决方式将数据库连接改为：url=jdbc:mysql://127.0.0.1:3306/MyDatabase+?serverTimezone=GMT%2B8
这里加上了时区GMT%2B8代表东八区
【mysql|mysql异常】如：
try {
Class.forName("com.mysql.cj.jdbc.Driver");
Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/user?serverTimezone=GMT", "root", "775633");
System.out.println("connection--->"+true);
} catch (Exception e) {
// TODO Auto-generated catch block
System.out.println("connection--->"+false);
e.printStackTrace();
}



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