kettle连接mysql 5.7.36 报错，求解惑
我已经下载mysql-connector-java-5.1.41-bin 至lib文件夹下，也试过几个其他版本的包，连接报错不是提示没有驱动包，数据库账号密码什么的的也从navicat 建了连接测试，没有问题可以连上
报错如下：
错误连接数据库 [asd] : org.pentaho.di.core.exception.KettleDatabaseException:
Error occurred while trying to connect to the database
Error connecting to database: (using class org.gjt.mm.mysql.Driver)
Communications link failure
The last packet successfully received from the server was 1 milliseconds ago. The last packet sent successfully to the server was 1 milliseconds ago.
org.pentaho.di.core.exception.KettleDatabaseException:
Error occurred while trying to connect to the database
Error connecting to database: (using class org.gjt.mm.mysql.Driver)
Communications link failure
The last packet successfully received from the server was 1 milliseconds ago. The last packet sent successfully to the server was 1 milliseconds ago.
