kettle应用程序集成代码 博客分类： 开源组件 javakettle

package com.zjhcsoft.kettle.test;

import org.pentaho.di.core.KettleEnvironment;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.core.logging.CentralLogStore;
import org.pentaho.di.core.logging.Log4jBufferAppender;
import org.pentaho.di.core.plugins.PluginRegistry;
import org.pentaho.di.core.plugins.RepositoryPluginType;
import org.pentaho.di.core.util.EnvUtil;
import org.pentaho.di.repository.ObjectId;
import org.pentaho.di.repository.RepositoriesMeta;
import org.pentaho.di.repository.Repository;
import org.pentaho.di.repository.RepositoryMeta;
import org.pentaho.di.repository.StringObjectId;
import org.pentaho.di.trans.Trans;
import org.pentaho.di.trans.TransMeta;

public class TestKettle {
	
	 /**
     * 执行转换方法--执行文件类型方式
     * @author twr_wjz
     * @date 2011-11-17
     * @param filename 转换文件路径
     * @throws Exception
     */
    public void runFileTransformation(String filename) {
            try {
                    // 运行环境初始化（设置主目录、注册必须的插件等）
                    KettleEnvironment.init();
                    EnvUtil.environmentInit();
                    //获取转换
                    TransMeta transMeta = new TransMeta(filename);
                    Trans trans = new Trans(transMeta);
                    // 执行指定转换You can pass arguments instead of null.
                    trans.execute(null); 
                    // 等待转换执行结束
                    trans.waitUntilFinished();
                    /*
                     * 抛出异常
                     */
                    if ( trans.getErrors() > 0 )
                    {
                            throw new RuntimeException( "转换执行期间有错误。" );
                    }
            }
            catch ( KettleException e ) {
                // TODO Put your exception-handling code here.
                    System.out.println(e);
            }
    }
    /**
     * 执行转换方法--连接资源库方式
     * @author twr_wjz
     * @date 2011-11-17
     * @param repID 资源库ID，如：1 ----建立资源库时，填写字段
     * @param transformationID 转换ID--对应数据库中表r_transformation的ID_TRANSFORMATION
     * @param transformationVersion 转换版本--对应数据库中表r_transformation的TRANS_VERSION
     * @throws Exception
     */
    /**
     * @param repID
     * @param transformationID
     * @param transformationVersion
     */
    public void runRepTransformation(String repID,String transformationID,String transformationVersion) {
            try {
                    // 运行环境初始化（设置主目录、注册必须的插件等）   
            KettleEnvironment.init();   
            RepositoriesMeta repositoriesMeta = new RepositoriesMeta();   
            // 从文件读取登陆过的资源库信息   
            repositoriesMeta.readData();   
            // 选择登陆过的资源库   
            RepositoryMeta repositoryMeta = repositoriesMeta.findRepository(repID);   
            // 获得资源库实例   
            Repository repository = PluginRegistry.getInstance().loadClass(RepositoryPluginType.class, repositoryMeta.getId(), Repository.class);  
            repository.init(repositoryMeta);   
            // 连接资源库   
            repository.connect("admin", "admin");  
            //设置转换ID
            ObjectId id = new StringObjectId(transformationID); 
            //获取转换   
            TransMeta transMeta = repository.loadTransformation(id,transformationVersion);
            Trans trans = new Trans(transMeta);
            // 执行指定转换You can pass arguments instead of null.
                    trans.execute(null); 
//                    创建打印日志类
                    Log4jBufferAppender appender = CentralLogStore.getAppender();
                    // 等待转换执行结束 
                    trans.waitUntilFinished();
                    //获取转换中的IU步骤
                    //InsertUpdate insertUpdate = (InsertUpdate)trans.findBaseSteps("IU").get(0);
                    //String logText = appender.getBuffer(insertUpdate.getLogChannelId(), false).toString();
                    //System.out.println("日志打印开始\n"+logText+"\n打印日志结束。\n");
                    //                        回收打印日志类
//                    CentralLogStore.discardLines(trans.getLogChannelId(),false);
                    /*
                     * 抛出异常
                     */
                    if ( trans.getErrors() > 0 )
                    {
                            throw new RuntimeException( "转换执行期间有错误。" );
                    } 
            repository.disconnect();  
            }
            catch ( KettleException e ) {
                // TODO Put your exception-handling code here.
                    System.out.println(e);
            }
    }
    /**
     * @param args
     */
    public static void main(String[] args) {
            
            // TODO Auto-generated method stub
    	TestKettle testKettle = new TestKettle();
//            testKettle.runFileTransformation("C:/111.ktr");
    	System.out.println(System.getProperty("user.dir"));
    	System.out.println(System.getProperty("KETTLE_HOME"));
    	System.setProperty("user.dir", "E:/myeclipseworkspace/testkettle/kettleconfig");  
        System.setProperty("KETTLE_HOME", "E:/myeclipseworkspace/testkettle/kettleconfig"); 
        System.out.println(System.getProperty("user.dir"));
    	System.out.println(System.getProperty("KETTLE_HOME"));
    	testKettle.runRepTransformation("testkettle","1","1.0");
    	testKettle.runRepTransformation("testkettle","2","1.0");
    }

}

kettle配置目录变更后的代码配置如下