执行jar文件时不显示碧玉报告

Question

当我在Netbeans中运行它时，它可以正常工作，但在可执行的jar文件中不会显示，这是我的代码

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt){                                         
    this.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
    rep.siapkan_report_dengan_parameter("report4.jrxml", "Report", "periode",tCari.getText());
    this.setCursor(Cursor.getDefaultCursor());
}


public void siapkan_report_dengan_parameter(      
    String nama_report,
    String direktori,
    String namaparameter,
    String isiparameter){      

    konek.openConnection();       

    Properties systemProp = System.getProperties();

    // Ambil current dir
    String currentDir = systemProp.getProperty("user.dir");

    File dir = new File(currentDir);
    String reportName = nama_report;
    String reportDirName = direktori;

    File fileRpt;
    String fullPath = "";
    if (dir.isDirectory()) {
        String[] isiDir = dir.list();
        for (int i = 0; i < isiDir.length; i++) {
            fileRpt = new File(currentDir + File.separatorChar + isiDir[i] + File.separatorChar +
                    reportDirName + File.separatorChar + reportName);
            if (fileRpt.isFile()) { // Cek apakah file  ada 
                fullPath = fileRpt.toString();                  
            } 
        } 
    }         

    String[] subRptDir = fullPath.split(reportName);

    try {

        // Persiapkan parameter untuk Report
        Map<String, Object> parameters = new HashMap<String, Object>();
        parameters.put(namaparameter, isiparameter);
        try {
            JasperReport JRpt = JasperCompileManager.compileReport(fullPath);                
            JasperPrint JPrint = JasperFillManager.fillReport(JRpt, parameters,konek.conn);
            if(JPrint.getPages().isEmpty()){
                JOptionPane.showMessageDialog(null, 
                "Data Untuk Kriteria :\n" + isiparameter +"\nTidak Ada", 
                "Peringatan", 
                JOptionPane.ERROR_MESSAGE);

            }else{
                JasperViewer.viewReport(JPrint, false);                
            }
        } catch (Exception rptexcpt) {
            JOptionPane.showMessageDialog(null, 
                "a", 
                "Peringatan", 
                JOptionPane.ERROR_MESSAGE);
        }
    } catch (Exception e) {
        JOptionPane.showMessageDialog(null, 
                "b", 
                "Peringatan", 
                JOptionPane.ERROR_MESSAGE);
    }

}

提前感谢！

我的图书馆是：

• common-beanutils-1.7
• commons-collections-2.1
• commons-digester-1.7
• commons-javaflow-20060411
• commons-logging-1.1
• jasperreports-3.0.1
• jdt-compiler-3.1.1
• jfreechart-1.0.3
• poi-3.0.1-FINAL-20070705

Answer 1

问题是您没有将jasper报告作为流加载。因此，请尝试添加以下内容：

InputStream st = getClass().getResourceAsStream(fullPath);

try {
            JasperDesign jd = JRXmlLoader.load(st);
            JasperReport JRpt = JasperCompileManager.compileReport(jd);                
            JasperPrint JPrint = JasperFillManager.fillReport(JRpt, parameters,konek.conn);
            if(JPrint.getPages().isEmpty()){
                JOptionPane.showMessageDialog(null, 
                "Data Untuk Kriteria :\n" + isiparameter +"\nTidak Ada", 
                "Peringatan", 
                JOptionPane.ERROR_MESSAGE);

            }else{
                JasperViewer.viewReport(JPrint, false);                
            }
        } catch (Exception rptexcpt) {
            JOptionPane.showMessageDialog(null, 
                "a", 
                "Peringatan", 
                JOptionPane.ERROR_MESSAGE);
        }

此外，在将文件导出到.jrxml之前，请将其.jar文件添加到项目的某些包中。

您将传递的路径（fullPath）将类似于：/com/report/nameofreport.jrxml。

Answer 2

问题与您的代码无关...只需添加以下库。不要使用最新的jasper库。这就是不通过jar可执行文件加载报告的原因。 （使用ireport 5.5.0库）。我使用的代码如下

private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    org.apache.log4j.BasicConfigurator.configure(new NullAppender());
    //InputStream st = getClass().getResourceAsStream("/Reports/SalesInvoiceCustomerCopy.jrxml");
    try
    {
        Connection connect = conn.open();

        String report2 = "H:\\Higher Diploma Project\\FinalHD\\src\\Reports\\SalesInvoiceCustomerCopy.jrxml";
        JasperReport rep2 = JasperCompileManager.compileReport(report2);
        JasperPrint rep_print2 = JasperFillManager.fillReport(rep2,null,connect);
        JasperPrintManager.printReport(rep_print2,false);

        String report = "H:\\Higher Diploma Project\\FinalHD\\src\\Reports\\SalesInvoice.jrxml";
        JasperReport rep = JasperCompileManager.compileReport(report);
        JasperPrint rep_print = JasperFillManager.fillReport(rep,null,connect);
        JasperPrintManager.printReport(rep_print,false);

        try
        {
            pst =conn.open().prepareStatement("INSERT INTO invoice_balanace VALUES (?,?,?,?)") ;
            pst.setString(1, txtInvoiceNo.getText());
            pst.setString(2, txtValue.getText());
            pst.setString(3, totDisc.getText());
            pst.setString(4, txtNetVal.getText());
            pst.executeUpdate();
        }catch(Exception e){JOptionPane.showMessageDialog(null, e);}

        idUpdater();
    }catch(Exception e){JOptionPane.showMessageDialog(null,""+ e);}

}                                        

Answer 3

在jar文件中使用已编译的jasper报告效率不高。我建议您从PC上的某个位置（例如C：驱动器）引用该报告。

如果您有一个易于访问的永久文件夹，那也将是最好的。可能是C:/<project name>/report/<your-report>。

此方法使您可以轻松分发它。