使用java调用Kettle资源库中的转换

本帖最后由 mingfly 于 2013-7-9 12:10 编辑 kettle 中配置如下： 创建db资源库：具体参考我的帖子：http://f.dataguru.cn/thread-146141-1-3.html 创建一个简单的转换（生成固定记录保存到文件中）   例子使用Maven构建 <properties> <pentaho.kettle.version>4.0.1-GA</pentaho.kettle.version> </properties> <dependencies> <dependency> <groupId>pentaho.kettle</groupId> <artifactId>kettle-core</artifactId> <version>${pentaho.kettle.version}</version> </dependency> <dependency> <groupId>pentaho.kettle</groupId> <artifactId>kettle-db</artifactId> <version>${pentaho.kettle.version}</version> </dependency> <dependency> <groupId>pentaho.kettle</groupId> <artifactId>kettle-engine</artifactId> <version>${pentaho.kettle.version}</version> </dependency> <dependency> <groupId>pentaho.kettle</groupId> <artifactId>kettle-ui-swt</artifactId> <version>${pentaho.kettle.version}</version> </dependency> <dependency> <groupId>pentaho-library</groupId> <artifactId>libformula</artifactId> <version>1.1.7</version> </dependency> <dependency> <groupId>org.codehaus.janino</groupId> <artifactId>janino</artifactId> <version>2.5.16</version> </dependency> <dependency> <groupId>rhino</groupId> <artifactId>js</artifactId> <version>1.7R2</version> </dependency> <dependency> <groupId>javax.mail</groupId> <artifactId>mail</artifactId> <version>1.4.1</version> </dependency> <!-- Assuming the tranformation is stored in MySql database--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.17</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>com.apache.commons</groupId> <artifactId>kettle-vfs-20100924</artifactId> <version>20100924</version> </dependency> <dependency> <groupId>commons-httpclient</groupId> <artifactId>commons-httpclient</artifactId> <version>3.1</version> </dependency> </dependencies> 这里特别要注意com.apache.commons的kettle-vfs-20100924 这个要手动加入，之前在公网的Maven Reponsitory找不到相应的包。kettle-vfs-20100924.jar存在{path}\data-integration\libext\pentaho中。   环境配置好之后开始撰写Java代码： package com.zhuheng.kettle; import org.pentaho.di.core.KettleEnvironment; import org.pentaho.di.core.database.DatabaseMeta; import org.pentaho.di.core.exception.KettleException; 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; /** * User: mingfly * Mail:[email protected] * Date: 13-7-9 * Time: 上午10:11 */ public class KettleMain { public static void main(String[] args) throws KettleException { //初始化环境 KettleEnvironment.init(); //创建DB资源库 KettleDatabaseRepository repository=new KettleDatabaseRepository(); DatabaseMeta databaseMeta=new DatabaseMeta("Kettle_MySQL","mysql","jdbc","localhost","kettle","3306","root","root"); //选择资源库 KettleDatabaseRepositoryMeta kettleDatabaseRepositoryMeta=new KettleDatabaseRepositoryMeta("Kettle","Kettle","Transformation description",databaseMeta); repository.init(kettleDatabaseRepositoryMeta); //连接资源库 repository.connect("admin","admin"); RepositoryDirectoryInterface directoryInterface=repository.loadRepositoryDirectoryTree(); //选择转换 TransMeta transMeta=repository.loadTransformation("test",directoryInterface,null,true,null); Trans trans=new Trans(transMeta); trans.execute(null); trans.waitUntilFinished();//等待直到数据结束 if(trans.getErrors()>0){ System.out.println("transformation error"); }else{ System.out.println("transformation successfully"); } } } 运行结果