kettle ETL java 调用 kettle job 或 transfer

代码如下：调用kettle 4.2版本

package test;


import org.apache.commons.lang.StringUtils;
import org.apache.commons.vfs.FileSelector;
import org.pentaho.di.core.KettleEnvironment;
import org.pentaho.di.core.database.DatabaseMeta;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.core.util.EnvUtil;
import org.pentaho.di.job.Job;
import org.pentaho.di.job.JobMeta;
import org.pentaho.di.repository.RepositoryDirectory;
import org.pentaho.di.repository.RepositoryDirectoryInterface;
import org.pentaho.di.repository.kdr.KettleDatabaseRepository;
import org.pentaho.di.repository.kdr.KettleDatabaseRepositoryMeta;
import org.pentaho.di.trans.Trans;
import org.pentaho.di.trans.TransMeta;


import com.longtech.configuration.BaseConfiguration;
import com.platform.common.util.LoggerUtil;


/**
*
* @Description: java调用kettle 数据库型资料库中的转换
* @author chen 此类是调用kettle 4.2版本的测试类
* @version 1.0,
* @date 2013-5-23 下午02:40:50
*/
public class ExecRepositoryTrans {
/**
* 本测试类慎用！！！！！！！
* @param args
*/
public static void main(String[] args) {
//D:\java\workspace\sics\src\config\kettle
String classesdir = BaseConfiguration.getString("classesdir");
String jobName = BaseConfiguration.getString("kettle.path.file");
if(StringUtils.isNotEmpty(jobName)){
LoggerUtil.info(ExecRepositoryTrans.class, "执行kettle job start-------------------");

runJob(classesdir + jobName);

LoggerUtil.info(ExecRepositoryTrans.class, "执行kettle job end -------------------");
}else{

LoggerUtil.info(ExecRepositoryTrans.class, "请配置kettle.path.file job 的路径文件");
}

}
/**
*java 调用kettle 转换
*/
public static void runTransfer(){
Trans trans=null;
FileSelector f = null;
try {
// 初始化
String fName= "D:\\kettle\\informix_to_am_4.ktr";
// 转换元对象
KettleEnvironment.init();//初始化
EnvUtil.environmentInit();
TransMeta transMeta = new TransMeta(fName);
// 转换
trans = new Trans(transMeta);
// 执行转换
trans.execute(null);
// 等待转换执行结束
trans.waitUntilFinished();
//抛出异常
if(trans.getErrors()>0){
throw new Exception("There are errors during transformation exception!(传输过程中发生异常)");
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* java 调用 kettle 的job
* @param jobname 如： String fName= "D:\\kettle\\informix_to_am_4.ktr";
*/
public static 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) {
throw new Exception("There are errors during job exception!(执行job发生异常)");
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 配置数据源 调用资源库中的相关job 、transfer
*/
public static void dbResource(){
String transName="t1";

try {
KettleEnvironment.init();
DatabaseMeta dataMeta = new DatabaseMeta("KettleDBRep","MSSQL","Native","127.0.0.1","etl","1433","sa","bsoft");
KettleDatabaseRepositoryMeta repInfo = new KettleDatabaseRepositoryMeta();
repInfo.setConnection(dataMeta);
KettleDatabaseRepository rep = new KettleDatabaseRepository();
rep.init(repInfo);
rep.connect("admin", "admin");

RepositoryDirectoryInterface dir = new RepositoryDirectory();
dir.setObjectId(rep.getRootDirectoryID());

TransMeta tranMeta = rep.loadTransformation(rep.getTransformationID(transName, dir), null);
Trans trans = new Trans(tranMeta);
trans.execute(null);
trans.waitUntilFinished();
} catch (KettleException e) {
e.printStackTrace();
}
}


}