Java调用Kettle4.2步骤

1.项目目录结构图

2.源代码

package com.winning.kettle;

import org.pentaho.di.core.KettleEnvironment;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.job.Job;
import org.pentaho.di.job.JobMeta;
import org.pentaho.di.trans.Trans;
import org.pentaho.di.trans.TransMeta;

public class Transformation
{
    public void runTran(String filename) {
        try {
            KettleEnvironment.init();
            TransMeta transMeta = new TransMeta(filename);
            Trans trans = new Trans(transMeta);
            //此处为输入的参数，也可以通过参数传进方法中
            String [] s = {"我是参数1","我是参数2"};
            trans.prepareExecution(s);
            trans.startThreads();
            trans.waitUntilFinished();
            if (trans.getErrors() != 0) {
                System.out.println("Error");
            }
        } catch (KettleException e) {
            e.printStackTrace();
        }
    }

    public void runJob(String jobname){
          try {
           KettleEnvironment.init();
           //jobname 是Job脚本的路径及名称
           JobMeta jobMeta = new JobMeta(jobname, null);
           Job job = new Job(null, jobMeta);
           //向Job 脚本传递参数，脚本中获取参数值：${参数名}
           //job.setVariable(paraname, paravalue);
           job.start();
           job.waitUntilFinished();
           if (job.getErrors() > 0) {
            System.out.println("decompress fail!");
           }
          } catch (KettleException e) {
           System.out.println(e);
          }
     }

    public static void main(String[] args)
    {
        Transformation transformation=new Transformation();
        transformation.runTran(System.getProperty("user.dir")+"\\src\\转换1.ktr");
        transformation.runJob("C:\\Users\\Administrator\\Desktop\\SendMail.kjb");

        /* 控制台输出
            INFO  22-03 21:38:43,981 - 转换1 - 为了转换解除补丁开始  [转换1]
            INFO  22-03 21:38:44,002 - 获取系统信息 - 完成处理 (I=0, O=0, R=1, W=1, U=0, E=0
            INFO  22-03 21:38:44,007 - 文本文件输出 - 完成处理 (I=0, O=2, R=1, W=1, U=0, E=0
            INFO  22-03 21:38:44,044 - SendMail - 开始执行任务
            INFO  22-03 21:38:44,048 - SendMail - 开始项[Mail]
            INFO  22-03 21:38:46,890 - SendMail - 完成作业项[Mail] (结果=[true])
            INFO  22-03 21:38:46,890 - SendMail - 任务执行完毕
         */
    }
}

项目例子下载地址（由于这里上传的文件大小有限制）：http://down.51cto.com/data/719492