java 无法运行 Jasper 报告：系统找不到指定的文件
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时间：2020-10-29 15:48:35 来源:igfitidea点击:
Unable to run Jasper report : The system cannot find the file specified
提问by Mohanish Timble
I have the reports in reports\templates\Contractor_Bill.jrxmland the results in reports\results\. It works fine in Netbeans 6.5, but when i copy the distfolder containing exec jar file to a new place and run the jar it throws this exception.
我有报告reports\templates\Contractor_Bill.jrxml和结果 reports\results\。它在 Netbeans 6.5 中工作正常，但是当我将dist包含 exec jar 文件的文件夹复制到新位置并运行 jar 时，它会引发此异常。
I also created the report folder in the new place, and it still generates the same exception.
我还在新地方创建了报告文件夹，它仍然生成相同的异常。
Aug 5, 2009 10:11:58 PM cbs.ui.ReportUI GenerateReport
SEVERE: null
net.sf.jasperreports.engine.JRException: Error compiling report java source files : C:\Documents and Settings\Mohanish Timble\Desktop\sw\Contractor_Bill_old_1249490518017_973633.java
at net.sf.jasperreports.engine.design.JRJavacCompiler.compileClasses(JRJavacCompiler.java:93)
at net.sf.jasperreports.engine.design.JRAbstractClassCompiler.compileUnits(JRAbstractClassCompiler.java:67)
at net.sf.jasperreports.engine.design.JRAbstractCompiler.compileReport(JRAbstractCompiler.java:190)
at net.sf.jasperreports.engine.JasperCompileManager.compileReport(JasperCompileManager.java:220)
at net.sf.jasperreports.engine.JasperCompileManager.compileReport(JasperCompileManager.java:153)
at cbs.ui.ReportUI.GenerateReport(ReportUI.java:202)
at cbs.ui.ReportUI.btnGenerateBillActionPerformed(ReportUI.java:151)
at cbs.ui.ReportUI.access0(ReportUI.java:38)
at cbs.ui.ReportUI.actionPerformed(ReportUI.java:85)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.io.IOException: Cannot run program "javac": CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessBuilder.start(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at net.sf.jasperreports.engine.design.JRJavacCompiler.compileClasses(JRJavacCompiler.java:62)
... 33 more
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.<init>(Unknown Source)
at java.lang.ProcessImpl.start(Unknown Source)
... 37 more
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at net.sf.jasperreports.engine.fill.JRFiller.createFiller(JRFiller.java: 138)
at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:57)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:402)
at cbs.ui.ReportUI.GenerateReport(ReportUI.java:218)
at cbs.ui.ReportUI.btnGenerateBillActionPerformed(ReportUI.java:151)
at cbs.ui.ReportUI.access0(ReportUI.java:38)
at cbs.ui.ReportUI.actionPerformed(ReportUI.java:85)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
回答by Mohanish Timble
Include the Jar jasper-compiler-jdt in the lib folder
在 lib 文件夹中包含 Jar jasper-compiler-jdt
回答by Petter Friberg
For versione of jasper-reports >= 6.0.0, the jar used to compile is called
对于jasper-reports >= 6.0.0的versione，用于编译的jar被调用
ecj-x.x.x.jar
See maven repoto get correct version number of ecj for relative version of jasper reports.
请参阅maven repo以获取 ecj 的正确版本号以获取 jasper 报告的相关版本。
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