无法在 pentaho 数据集成中编辑和创建新转换答案

【问题标题】：can't Edit and create new transformation in pentaho data integration无法在 pentaho 数据集成中编辑和创建新转换
【发布时间】：2018-03-31 02:29:36
【问题描述】：

我是 Pentaho 的新手，在用勺子编辑或创建新转换时遇到问题。以下是问题的详细信息。

java.lang.NullPointerException
    at org.pentaho.di.ui.core.database.dialog.XulDatabaseDialog.open(XulDatabaseDialog.java:111)
    at org.pentaho.di.ui.core.database.dialog.DatabaseDialog.open(DatabaseDialog.java:59)
    at org.pentaho.di.ui.trans.step.BaseStepDialog$5.widgetSelected(BaseStepDialog.java:770)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
    at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
    at org.pentaho.di.ui.trans.steps.databasejoin.DatabaseJoinDialog.open(DatabaseJoinDialog.java:415)
    at org.pentaho.di.ui.spoon.delegates.SpoonStepsDelegate.editStep(SpoonStepsDelegate.java:124)
    at org.pentaho.di.ui.spoon.Spoon.editStep(Spoon.java:8720)
    at org.pentaho.di.ui.spoon.trans.TransGraph.editStep(TransGraph.java:3027)
    at org.pentaho.di.ui.spoon.trans.TransGraph.mouseDoubleClick(TransGraph.java:744)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
    at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
    at org.pentaho.di.ui.spoon.Spoon.readAndDispatch(Spoon.java:1310)
    at org.pentaho.di.ui.spoon.Spoon.waitForDispose(Spoon.java:7931)
    at org.pentaho.di.ui.spoon.Spoon.start(Spoon.java:9202)
    at org.pentaho.di.ui.spoon.Spoon.main(Spoon.java:648)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at org.pentaho.commons.launcher.Launcher.main(Launcher.java:92)

【问题讨论】：

嗨。我已经为 java_home 和kettle_home 设置了环境变量，这解决了我的问题。

标签： java pentaho pentaho-spoon pentaho-data-integration pentaho-design-studio

【解决方案1】：

正如您现在所知道的，空指针异常是由于它无法找到相关的java库的原因。所以你必须有为 Java 和kettle 定义的路径。

【讨论】：