Pentaho kettle与Java的集成

在这里，我尝试从Java执行一个转换。java代码是：

public class PDI {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        try {
            KettleEnvironment.init();
            System.out.println("1");
            //StepLoader.init();
            EnvUtil.environmentInit();
            System.out.println("2");
            TransMeta metaData = new TransMeta("D:/pdi/external/ExcelSheet/person.ktr");
            System.out.println("3");
           Trans trans = new Trans( metaData );
           System.out.println("4");
           trans.execute(null);
           System.out.println("5");
          trans.waitUntilFinished();
          System.out.println("6");
            if ( trans.getErrors() > 0 ) {
                System.out.print( "Error Executing transformation" );
            }

        } catch (KettleException e) {

             e.printStackTrace();
        }
}

    }

但我得到了一个错误：

1
2
3
4
2018/10/05 21:04:31 - person - Dispatching started for transformation [person]
5
java.lang.NoSuchMethodError: org.apache.poi.ss.usermodel.Cell.getCellType()I
    at org.pentaho.di.trans.steps.excelinput.poi.PoiCell.getType(PoiCell.java:43)child index = 0, logging object : org.pentaho.di.core.logging.LoggingObject@5789a7e2 parent=718e171d-3be6-4174-a9d0-7ce8c54b2fb3
2018/10/05 21:04:32 - Microsoft Excel Input.0 - Finished processing (I=0, O=0, R=0, W=0, U=0, E=1)

    at org.pentaho.di.trans.steps.excelinput.ExcelInput.fillRow(ExcelInput.java:138)
    at org.pentaho.di.trans.steps.excelinput.ExcelInput.getRowFromWorkbooks(ExcelInput.java:665)
    at org.pentaho.di.trans.steps.excelinput.ExcelInput.processRow(ExcelInput.java:471)
    at org.pentaho.di.trans.step.RunThread.run(RunThread.java:60)
    at java.lang.Thread.run(Thread.java:748)
2018/10/05 21:04:32 - Microsoft Excel Input.0 - ERROR (version 5.0.0.1.19046, build 1 from 2013-09-11_13-51-13 by buildguy) : Unexpected error
2018/10/05 21:04:32 - Microsoft Excel Input.0 - ERROR (version 5.0.0.1.19046, build 1 from 2013-09-11_13-51-13 by buildguy) : java.lang.NoSuchMethodError: org.apache.poi.ss.usermodel.Cell.getCellType()I
2018/10/05 21:04:32 - Microsoft Excel Input.0 -     at org.pentaho.di.trans.steps.excelinput.poi.PoiCell.getType(PoiCell.java:43)
2018/10/05 21:04:32 - Microsoft Excel Input.0 -     at org.pentaho.di.trans.steps.excelinput.ExcelInput.fillRow(ExcelInput.java:138)
2018/10/05 21:04:32 - Microsoft Excel Input.0 -     at org.pentaho.di.trans.steps.excelinput.ExcelInput.getRowFromWorkbooks(ExcelInput.java:665)
2018/10/05 21:04:32 - Microsoft Excel Input.0 -     at org.pentaho.di.trans.steps.excelinput.ExcelInput.processRow(ExcelInput.java:471)
2018/10/05 21:04:32 - Microsoft Excel Input.0 -     at org.pentaho.di.trans.step.RunThread.run(RunThread.java:60)
2018/10/05 21:04:32 - Microsoft Excel Input.0 -     at java.lang.Thread.run(Thread.java:748)
2018/10/05 21:04:32 - person - person
2018/10/05 21:04:32 - person - person
2018/10/05 21:04:32 - person - ERROR (version 5.0.0.1.19046, build 1 from 2013-09-11_13-51-13 by buildguy) : Errors detected!6

Error Executing transformation.

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因此，您的转换涉及到一个输入Excel步骤。此步骤基于ApachePOI库

1） 确保您的转换正在运行中。 2） 确保poi-.jar位于java类路径上

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您将在lib目录中找到jar，该目录随发行版一起提供。为了避免以后出现这种意外情况，您可能会发现在类路径中包含所有这些库很有用。

转换正在spoon中运行，我也在类路径中添加了所有JAR，但仍然不起作用。请检查您是否与我定义了两次的Cell.getCellType（）冲突。对于Cell.getCellType（），我更改了appache poi的版本，现在它可以工作了