JasperReportsTestExample

// Example view code

final Button makeReport = new Button("Generate report", new ClickListener() {

    @Override
    public void buttonClick(ClickEvent event) {
        try {
            MyPdfSource pdfSource = new MyPdfSource("test.pdf", new ByteArrayOutputStream());
            testServiceBean.doReport(pdfSource.getOutputStream());

            resource = new StreamResource(pdfSource, "test.pdf");
            resource.setMIMEType("application/pdf");
            resource.getStream().setParameter("Content-Disposition", "attachment; filename=test.pdf");

            final Button print = new Button("print");

            BrowserWindowOpener opener = new BrowserWindowOpener(resource);
            opener.extend(print);
            compositionRoot.add(print);
        } catch (SQLException e) {
            setMessage(e.getMessage());
        }
    }
});

// ....

// Example service code (with WildFly datasource)

@Resource(lookup = "java:jboss/YourDS")
private DataSource dataSource;

public ResultDTO doReport(OutputStream outputStream) throws SQLException {
    final Connection connection = dataSource.getConnection();
    final String reportName = "test" + counter + ".pdf";

    try {
        Map<String, Object> hm = new HashMap<String, Object>();

        JasperReport jasperReport = JasperCompileManager.compileReport("/path/to/test.jrxml");

        JasperPrint print = JasperFillManager.fillReport(jasperReport, hm, connection);

        JasperExportManager.exportReportToPdfStream(print, outputStream);
	
	connection.close();
    } catch (JRException e) {
        e.printStackTrace();
    }
    // .....
}


// Example report jrxml-file (for customer entity)

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" 
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
      xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports 
        http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" 
      name="My first report" pageWidth="595" pageHeight="842" columnWidth="535" 
      leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
      
  <queryString language="SQL">
    <![CDATA[SELECT * FROM customer;]]>
  </queryString>
  
  <field name="ID" class="java.lang.Integer">
    <fieldDescription><![CDATA[]]></fieldDescription>
  </field>
  <field name="FIRSTNAME" class="java.lang.String">
    <fieldDescription><![CDATA[]]></fieldDescription>
  </field>
  <field name="LASTNAME" class="java.lang.String">
    <fieldDescription><![CDATA[]]></fieldDescription>
  </field>
  
  
  <background>
  <band/>
	</background>
  <title>
    <band height="58">
      <line>
        <reportElement x="0" y="8" width="555" height="1"/>
      </line>
      <line>
        <reportElement positionType="FixRelativeToBottom" x="0" y="51" width="555" 
             height="1"/>
      </line>
	</band>
	</title>
  <pageHeader>
    <band/>
  </pageHeader>
  
  <columnHeader>
  <band height="18">
  <staticText>
        <reportElement mode="Opaque" x="0" y="0" width="138" height="18" 
        forecolor="#FFFFFF" backcolor="#999999"/>
        <textElement>
          <font size="12"/>
        </textElement>
        <text><![CDATA[ID]]></text>
      </staticText>
      <staticText>
        <reportElement mode="Opaque" x="138" y="0" width="138" height="18" 
        forecolor="#FFFFFF" backcolor="#999999"/>
        <textElement>
          <font size="12"/>
        </textElement>
        <text><![CDATA[FIRSTNAME]]></text>
      </staticText>
      <staticText>
        <reportElement mode="Opaque" x="276" y="0" width="138" height="18" 
        forecolor="#FFFFFF" backcolor="#999999"/>
        <textElement>
          <font size="12"/>
        </textElement>
        <text><![CDATA[LASTNAME]]></text>
  </staticText>
  </band>
  </columnHeader>
  
  
  <detail>
    <band height="20">
      <textField hyperlinkType="None">
        <reportElement x="0" y="0" width="138" height="20"/>
        <textElement>
          <font size="12"/>
        </textElement>
        <textFieldExpression class="java.lang.Integer"><![CDATA[$F{ID}]]>
        </textFieldExpression>
      </textField>
      <textField hyperlinkType="None">
        <reportElement x="138" y="0" width="138" height="20"/>
        <textElement>
          <font size="12"/>
        </textElement>
        <textFieldExpression class="java.lang.String"><![CDATA[$F{FIRSTNAME}]]>
        </textFieldExpression>
     </textField>
      <textField hyperlinkType="None">
        <reportElement x="276" y="0" width="138" height="20"/>
        <textElement>
          <font size="12"/>
        </textElement>
        <textFieldExpression class="java.lang.String"><![CDATA[$F{LASTNAME}]]>
        </textFieldExpression>
      </textField>
      </band>
      </detail>
      
  <columnFooter>
    <band/>
  </columnFooter>
  <summary>
    <band/>
  </summary>
  
</jasperReport>