java - 执行 jar 文件时没有显示 jasper 报告

Question

当我在 Netbeans 中运行它时它工作正常但它不会显示在可执行 jar 文件中这是我的代码

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);
    }

}

提前致谢!

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。所以，尝试添加这个:

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，在将项目导出到 .jar 之前，将 .jrxml 文件添加到项目的某个包中。

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