org.eclipse.birt.report.engine.api.EngineException: Error happened while running the report.
at org.eclipse.birt.report.engine.api.impl.DatasetPreviewTask.doRun(DatasetPreviewTask.java:330)
at org.eclipse.birt.report.engine.api.impl.DatasetPreviewTask.runDataset(DatasetPreviewTask.java:280)
at org.eclipse.birt.report.engine.api.impl.DatasetPreviewTask.execute(DatasetPreviewTask.java:91)
at org.eclipse.birt.report.designer.data.ui.dataset.DataSetPreviewer.preview(DataSetPreviewer.java:68)
at org.eclipse.birt.report.designer.data.ui.dataset.ResultSetPreviewPage$5.run(ResultSetPreviewPage.java:366)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)
Caused by: java.lang.NoClassDefFoundError: org/mozilla/javascript/ScriptOrFnNode
at org.eclipse.birt.data.engine.impl.PreparedQuery.(PreparedQuery.java:100)
at org.eclipse.birt.data.engine.impl.PreparedDataSourceQuery.(PreparedDataSourceQuery.java:75)
at org.eclipse.birt.data.engine.impl.PreparedOdaDSQuery.(PreparedOdaDSQuery.java:76)
at org.eclipse.birt.data.engine.impl.PreparedQueryUtil.newInstance(PreparedQueryUtil.java:211)
at org.eclipse.birt.data.engine.impl.DataEngineImpl.prepare(DataEngineImpl.java:426)
at org.eclipse.birt.report.data.adapter.impl.DataRequestSessionImpl.prepare(DataRequestSessionImpl.java:473)
at org.eclipse.birt.report.data.adapter.impl.DataRequestSessionImpl.prepare(DataRequestSessionImpl.java:483)
at org.eclipse.birt.report.engine.api.impl.DatasetPreviewTask.extractQuery(DatasetPreviewTask.java:348)
at org.eclipse.birt.report.engine.api.impl.DatasetPreviewTask.doRun(DatasetPreviewTask.java:309)
... 5 more
Caused by: java.lang.ClassNotFoundException: org.mozilla.javascript.ScriptOrFnNode cannot be found by org.eclipse.birt.data_4.4.2.v201501161327
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:439)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:352)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:344)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:160)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 14 more
以上是错误的信息。我配置好birt报表的数据源以后，连接是成功的。但进行sql预览的时候一直报这个错。我便自己添加了org.mozilla.javascript.这个包，但还是没用。
https://blog.csdn.net/gnolzhao/article/details/50148167
解决了吗 遇到相同的问题 能帮助一下吗