我有一个使用Jasper Reports API生成PDF的java应用程序.它构建正常,但我不得不通过Netbeans/iReport插件添加一些字体,以便在导出PDF时显示它们.在清洁和建立它很好,一切正常.
但是当我构建一个胖jar(通过build.xml中的几个package-for-store行)时,报告将无法运行.通过终端运行,我收到此错误(抱歉文本墙):
Exception in thread "AWT-EventQueue-0" java.lang.ExceptionInInitializerError
at net.sf.jasperreports.engine.fill.JRBaseFiller.<init>(JRBaseFiller.java:124)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:89)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:104)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:62)
at net.sf.jasperreports.engine.fill.JRFiller.createFiller(JRFiller.java:179)
at net.sf.jasperreports.engine.fill.JRFiller.fill(JRFiller.java:108)
at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:668)
at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:649)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:971)
at ie.orderofmalta.OMFinancialsForm.yTDReportBtnActionPerformed(OMFinancialsForm.java:283)
at ie.orderofmalta.OMFinancialsForm.access$700(OMFinancialsForm.java:30)
at ie.orderofmalta.OMFinancialsForm$8.actionPerformed(OMFinancialsForm.java:163)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at …所以我有一个显示 jasper 报告的 java 应用程序。我使用Netbeans 的iReport插件在报告中放置了一张图像。在我当前的机器上一切都显示正常，但是当我尝试在另一台机器上运行编译后的 jar 时，报告将无法加载。
从Windows控制台来看，我认为这是因为图像的路径是绝对的，即引用开发机器硬盘上的特定文件夹。我需要使其与 jar 文件相关。我已将图像放入包中并确认它位于编译后的 jar 内。但是当我将iReport中的“图像表达式”值更改为“/reports/Logo.jpg”（其中 /reports 是包）并运行应用程序时，我得到
EXCEPTION: Byte data not found at : /reports/Logo.jpgnet.sf.jasperreports.engine.JRException: Byte data not found at : reports/Logo.jpg
有什么想法要做什么吗？我很困惑，非常感谢任何帮助！
更新：明白了。必须在报表中创建一个参数并从图像表达式中调用该参数。然后我在Java代码中创建了HashMap和InputStream ，并将输入流放入哈希映射中！这么简单的事情却需要这么多代码！
Java代码：
//to get images to display in report, pass their relative path as input stream and add to HashMap
//there must be one stream and one HashMap per image
InputStream imgInputStream = this.getClass().getResourceAsStream("/reports/omacLogo.jpg");
InputStream imgInputStream2 = this.getClass().getResourceAsStream("/reports/omacLogo.jpg");
parameters.put("omacLogo", imgInputStream);
parameters2.put("omacLogo", …