object TransDemo extends App {  execTrans(args(0))  // ktr文件的全路径  def execTrans(fileName: String) {    KettleEnvironment.init()    EnvUtil.environmentInit();    val transMeta = new TransMeta(fileName)    val trans = new Trans(transMeta)    trans.execute(null) // you can pass arguments instead of null    trans.waitUntilFinished();    if (trans.getErrors > 0) {      throw new RuntimeException("There were errors during transformation execution")    }  }}