Jasper Report

• Jasper Reports is an open-source Java reporting library.
  
• 100% written in Java.
• It compiles .jrxml (XML source) to .jasper (compiled) files, which in turn can be transformed into several output types including PDF, HTML, CSV, and XLS.
• You can configure various data source: JDBC, EJB, POJO, Hibernate, XML.

Download Struts 2 Jasper Report Plugins

We need the following libraries: http://www.sourceforge.net/projects/jasperreports

• jasperreports-version.jar
• commons-*.jar
• itext-version.jar
• jdt-compiler.jar

Copy these libraries to your WEB-INF/lib directory

Code

Create Product JavaBean called Product.java

Create Action (MyJasperAction) which compiles and stream the datasource to jrxml which compiles and generate report.

public class MyJasperAction extends ActionSupport {

    /** create List to use as our JasperReports dataSource. */

    private List myList;

    public String execute() throws Exception {

        Product p1 = new Product(new Long(1), "Sony Camera", "149.99");

        Product p2 = new Product(new Long(2), "Fuji Camera", "99.99");

        // Store product in our dataSource list (normally would come from database).

        myList = new ArrayList();

        myList.add(p1);

        myList.add(p2);

        // Normally we would provide a pre-compiled .jrxml file

        // or check to make sure we don't compile on every request.

try {

JasperCompileManager.compileReportToFile(

"myapp/reports/jasper_template.jrxml",

"myapp/reports/compiled_template.jasper");

} catch (Exception e) {

e.printStackTrace();

return ERROR;

}

        return SUCCESS;

    }

    public List getMyList() {

        return myList;

    }

}

Struts.xml

define the jasper result type manually in struts.xml

<br /><package name="default" namespace="/" extends="struts-default"><br />

Jasper Reports Pagination

//IGNORE PAGINATION
// if (!format.equals(ReportFormat.PDF.toString()))
// parameters.put(JRParameter.IS_IGNORE_PAGINATION, Boolean.TRUE); // IGNORE PAGINATION BEFORE JRFillManager.fillReport

//PAGINATION
//exporter.setParameter(JRExporterParameter.PAGE_INDEX, new Integer(0));
//JRVariable[] jrVariables jasperReport.getVariables();
// retrive PAGE_COUNT Variable for total page and perfor paging on that