kettle版本：7.0 MySQL版本：8.0
1.把mysql-connector-java-8.0.13.jar 包，放在lib路径下，测试连接时，报错
Driver class 'org.gjt.mm.mysql.Driver' could not be found, make sure the 'MySQL' driver (jar file) is installed. org.gjt.mm.mysql.Driver
2.重新下载了mysql-connector-java-5.1.47.jar包，放在lib路径下面，重新打开spoon.bat，测试成功。
mysql-connector-java-5.1.47.jar下载地址 提取码：vd71