在连接数据库页面填写完成后点击“测试”

报错信息：

错误连接数据库 [ETLqiangzi] : org.pentaho.di.core.exception.KettleDatabaseException: 
Error occurred while trying to connect to the databaseDriver class 'org.gjt.mm.mysql.Driver' could not be found, make sure the 'MySQL' driver (jar file) is installed.
org.gjt.mm.mysql.Driverorg.pentaho.di.core.exception.KettleDatabaseException: 
Error occurred while trying to connect to the databaseDriver class 'org.gjt.mm.mysql.Driver' could not be found, make sure the 'MySQL' driver (jar file) is installed.
org.gjt.mm.mysql.Driver

缺少数据库连接jar包，需要到官网下载jar包

 下载连接：MySQL :: Download MySQL Connector/J (Archived Versions)

高版本可能不匹配，因此直接下载较低版本，这里下载的是5.1.48

把jar包放入lib下，重启Spoon后再进行连接即可