看了下报错信息，提取了关键位置报错，缺少驱动：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

 

去官网下载：https://dev.mysql.com/downloads/connector/j/

 

 解压后取出mysql-connector-java.jar包。放到kettle的lib目录下面。

 

重启kettle并测试。