小编Fah*_*han的帖子

我现在尝试使用MS Access 2007我想基于其他列值更新列,在MY SQL中它成功运行此查询

UPDATE HAI
SET REGION=(
CASE
  WHEN (NUMREG LIKE '%1') THEN 'BDG'
  WHEN (NUMREG LIKE '%2') THEN 'JKT'
  WHEN (NUMREG LIKE '%3') THEN 'KNG'
END);

此查询不会在MS Access中运行,有错误Sytax error (missing operator) in query expression.我怎么解决这个问题？

我刚刚尝试了Jasper Report,我正在关注这个网站的教程

我也下载了示例源,然后运行它并没有错误.但是当我使用创建自己的报告时iReport,编译它,并将.jasper文件添加到我的项目中.还有exception,当我运行我的程序:

Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: org/codehaus/groovy/runtime/callsite/CallSiteArray
    at report2_1343895135169_749208.$createCallSiteArray(calculator_report2_1343895135169_749208)
    at report2_1343895135169_749208.$getCallSiteArray(calculator_report2_1343895135169_749208)
    at report2_1343895135169_749208.<init>(calculator_report2_1343895135169_749208)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at java.lang.Class.newInstance0(Class.java:355)
    at java.lang.Class.newInstance(Class.java:308)
    at net.sf.jasperreports.engine.design.JRAbstractJavaCompiler.loadEvaluator(JRAbstractJavaCompiler.java:112)
    at net.sf.jasperreports.engine.design.JRAbstractCompiler.loadEvaluator(JRAbstractCompiler.java:333)
    at net.sf.jasperreports.engine.JasperCompileManager.getEvaluator(JasperCompileManager.java:265)
    at net.sf.jasperreports.engine.fill.JRFillDataset.createCalculator(JRFillDataset.java:457)
    at net.sf.jasperreports.engine.fill.JRBaseFiller.<init>(JRBaseFiller.java:379)
    at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:88)
    at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:103)
    at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:61)
    at net.sf.jasperreports.engine.fill.JRFiller.createFiller(JRFiller.java:153)
    at net.sf.jasperreports.engine.fill.JRFiller.fill(JRFiller.java:82)
    at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:653)
    at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:634)
    at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:956)
    at View.MainGUI.btnExportActionPerformed(MainGUI.java:871)
    at View.MainGUI.access$800(MainGUI.java:50)
    at View.MainGUI$10.actionPerformed(MainGUI.java:541)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
    at java.awt.Component.processMouseEvent(Component.java:6267) …

基本上我想JasperViewer从我的主应用程序上的按钮打电话.我用这个

private void btnExportActionPerformed(java.awt.event.ActionEvent evt) {
        try {
            JasperPrint printer = JasperFillManager.fillReport(getClass().getResourceAsStream("reportRecharge.jasper"), params, new JREmptyDataSource());
            JasperViewer jv = new JasperViewer(printer);
            jv.setVisible(true);
        } catch (JRException ex) {
            ex.printStackTrace();
        }
}

当JasperViewer出现并关闭它时,main frame/ parent也关闭.我尝试添加,jv.setDefaultCloseOperation(HIDE_ON_CLOSE);但它也没有用.怎么弄？

任何帮助,将不胜感激.