【MyBatis】MyBatis之整合Spring出现异常： Could not open JDBC Connection.....;Cannot load JDBC driver class '${jdbc.driverClassName}'

org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class '${jdbc.driverClassName}'org.springframework.transaction.CannotCreateTransa