mysql8.0链接eclipse的前置字符串
public class DbStr {
//public static String classstr="com.mysql.jdbc.Driver";
public static String classstr="com.mysql.cj.jdbc.Driver";
public static String constr="jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT%2B8";
public static String dbuser="root";
public static String dbpass="123";
}