Jasper report integration in Oracle BPM

Question

Hello friends
We'r working on an application using Oracle BPM 11g (11.1.1.5.0)
What we are looking for is to have the ability to generate reports using iReport (jasper).
Using help from the previous thread below ,we have been able to call a report without any input parameters and by calling the servlet directly.
Re: generating jasper reports in Oracle BPM
What we're trying to do here is to have some input parameters for our report.
I'm trying to do this using a java class, but haven't found any sample to show me the way and samples I've found didn't work in Oracle BPM
Can anyone help me with this?
Thank you

Answer 1

Hi
I have finally solved my problem.
The problem was that I could not send the input parameter to the servlet.
Here is my code:
in my java class:
public String actionRunReport() throws Exception {
        // Add event code here...
        String emp = null;
        if (getEmployeeID().getValue() != null) {
            emp = getEmployeeID().getValue().toString();
        } else {
            emp = "1";
        FacesContext ctx = FacesContext.getCurrentInstance();
        HttpServletRequest request =
            (HttpServletRequest)ctx.getExternalContext().getRequest();
        HttpServletResponse response =
            (HttpServletResponse)ctx.getExternalContext().getResponse();
        request.setAttribute("empId", emp);
        request.getRequestDispatcher(response.encodeURL("/printrrportservlet")).forward(request,
                                                                                        response);
        response.flushBuffer();
        ctx.responseComplete();
        return null;
    }in my servlet:
public void doPost(HttpServletRequest request,
                       HttpServletResponse response) throws ServletException,
                                                            IOException {
        response.setContentType(CONTENT_TYPE);
        //OutputStream ouputStream = null;
        try {
            Connection conn = Connect.createConnection();
            String reportSource = "C:\\reports\\templates\\guarantees.jrxml";
            InputStream input = new FileInputStream(new File(reportSource));
            JasperDesign design = JRXmlLoader.load(input);
            JasperReport report = JasperCompileManager.compileReport(design);
            Map<String, Object> params = new HashMap<String, Object>();
            params.put("reportTitle", "Guarantees");
            params.put("author", "Milad");
            params.put("startDate", (new java.util.Date()).toString());
            params.put("empId", request.getAttribute("empId"));
            JasperPrint jasperPrint =
                JasperFillManager.fillReport(report, params, conn);
            OutputStream ouputStream = response.getOutputStream();
            JRExporter exporter = null;
            response.setContentType("application/pdf");
            exporter = new JRPdfExporter();
            exporter.setParameter(JRExporterParameter.JASPER_PRINT,
                                  jasperPrint);
            exporter.setParameter(JRExporterParameter.OUTPUT_STREAM,
                                  ouputStream);
            exporter.exportReport();
        } catch (Exception ex) {
            ex.printStackTrace();
    }In jspx page::
<af:commandButton text="Run report" id="cb1"
   action="#{printBean.actionRunReport}"/>in web.xml:
<servlet-mapping>
    <servlet-name>PrintrRportServlet</servlet-name>
    <url-pattern>/printrrportservlet</url-pattern>
</servlet-mapping>