JasperReport Web页面预览问题

Question

在官方网站找到了用applet例子可以实现Web预览，但是例子没有实现预览保存为其他文件（如PDF）的功能，不知可有哪位前辈研究过此功能？

Answer 1

哎，要做成jrviewe和pdf很容易。可是做成CSV我就头痛了

Answer 2

点击保存按钮，在KAVA控制台显示如下出错信息：
Exception in thread "AWT-EventQueue-2" java.security.AccessControlException: access denied (java.util.PropertyPermission user.dir read)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPropertyAccess(Unknown Source)
at java.lang.System.getProperty(Unknown Source)
at java.io.Win32FileSystem.getUserPath(Unknown Source)
at java.io.Win32FileSystem.resolve(Unknown Source)
at java.io.File.getAbsolutePath(Unknown Source)
at sun.awt.shell.Win32ShellFolder2.<init>(Unknown Source)
at sun.awt.shell.Win32ShellFolder2.listFiles(Unknown Source)
at sun.awt.shell.ShellFolder.listFiles(Unknown Source)
at sun.awt.shell.Win32ShellFolderManager2.get(Unknown Source)
at sun.awt.shell.ShellFolder.get(Unknown Source)
at javax.swing.plaf.metal.MetalFileChooserUI.updateUseShellFolder(Unknown Source)
at javax.swing.plaf.metal.MetalFileChooserUI.installComponents(Unknown Source)
at javax.swing.plaf.basic.BasicFileChooserUI.installUI(Unknown Source)
at javax.swing.plaf.metal.MetalFileChooserUI.installUI(Unknown Source)
at javax.swing.JComponent.setUI(Unknown Source)
at javax.swing.JFileChooser.updateUI(Unknown Source)
at javax.swing.JFileChooser.setup(Unknown Source)
at javax.swing.JFileChooser.<init>(Unknown Source)
at javax.swing.JFileChooser.<init>(Unknown Source)
at net.sf.jasperreports.view.JRViewer.btnSaveActionPerformed(JRViewer.java:790)
at net.sf.jasperreports.view.JRViewer.access$100(JRViewer.java:82)
at net.sf.jasperreports.view.JRViewer$2.actionPerformed(JRViewer.java:389)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$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.AWTEventMulticaster.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.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(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)
应该是没有Sign jasperreports-0.6.8-applet.jar
请问如何Sign jasperreports-0.6.8-applet.jar啊？我从来没有试过啊