java - 如何显示从DefaultTableModel传递过来的Jasper报表中的数据

Question

我正在使用 Java Swing 开发一个项目，并使用 Jasper Report 进行报告。

我使用 Jasper Report 设计了该报告，并且我从以下位置调用该报告Java 类。现在我想以TableModel的形式发送数据以在报表表中设置值，但是jasper报表没有显示以TableModel的形式设置的表数据。

甚至报告文件也没有通过 JAR 打开。如果我正在创建 jar Jasper 报告页面会引发异常。

我想发送报表表中的表模型数据，就像java代码中的tableModelData一样。我正在使用以下代码。

   package pmc;
   import java.util.HashMap;
   import javax.swing.table.DefaultTableModel;
   import net.sf.jasperreports.engine.JRException;
   import net.sf.jasperreports.engine.JasperCompileManager;
   import net.sf.jasperreports.engine.JasperFillManager;
   import net.sf.jasperreports.engine.JasperPrint;
   import net.sf.jasperreports.engine.data.JRTableModelDataSource;
   import net.sf.jasperreports.view.JasperViewer;

   public class SimpleReport1 {

   DefaultTableModel tableModel;

   public SimpleReport1() {
     JasperPrint jasperPrint = null;
      TableModelData();
       try {
            JasperCompileManager.compileReportToFile("src/reports/report1.jrxml");
        jasperPrint = JasperFillManager.fillReport("src/reports/report1.jasper", new HashMap(),
                new JRTableModelDataSource(tableModel));
        JasperViewer jasperViewer = new JasperViewer(jasperPrint);
        jasperViewer.setVisible(true);
    } catch (JRException ex) {
        ex.printStackTrace();

}}

private void TableModelData() {
    String[] columnNames = {"Id", "Name", "Department", "Email"};
    String[][] data = {
        {"111", "G Conger", " Orthopaedic", "jim@wheremail.com"},
        {"222", "A Date", "ENT", "adate@somemail.com"},
        {"333", "R Linz", "Paedriatics", "rlinz@heremail.com"},
        {"444", "V Sethi", "Nephrology", "vsethi@whomail.com"},
        {"555", "K Rao", "Orthopaedics", "krao@whatmail.com"},
        {"666", "V Santana", "Nephrology", "vsan@whenmail.com"},
        {"777", "J Pollock", "Nephrology", "jpol@domail.com"},
        {"888", "H David", "Nephrology", "hdavid@donemail.com"},
        {"999", "P Patel", "Nephrology", "ppatel@gomail.com"},
        {"101", "C Comer", "Nephrology", "ccomer@whymail.com"}
    };
    tableModel = new DefaultTableModel(data, columnNames);
}
public static void main(String[] args) {
    new SimpleReport1();
}
}

Answer 1

更改此行:

JasperCompileManager.compileReportToFile("src/reports/report1.jrxml");

至:

JasperCompileManager.compileReportToFile("src/reports/report1.jrxml","src/reports/report1.jasper");