Question:
I have an RPC service and one of the method is generating a report using Pentaho Reporting Engine. Report is an PDF file. What I'd like to do, is when user request a report, the report is sent back to him and save dialog or sth pops up. I tried this inside my service method:
Resource res = manager.createDirectly(new URL(reportUrl), MasterReport.class); MasterReport report = (MasterReport) res.getResource(); report.getParameterValues().put("journalName", "FooBar"); this.getThreadLocalResponse().setContentType("application/pdf"); PdfReportUtil.createPDF(report, this.getThreadLocalResponse().getOutputStream()); But it doesn't work. How it can be done?
Solution:1
I do it a little bit differently. I've got a separate servlet that I use to generate the PDF. On the client, do something like:
Cookies.setCookie(set what ever stuff PDF needs...); Window.open(GWT.getModuleBaseURL() + "DownloadPDF", "", ""); The servlet, DownloadPDF looks something like this:
public class DownloadPDF extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) { Cookie[] cookies = request.getCookies(); try { // get cookies, generate PDF. // If PDF is generated to to temp file, read it byte[] bytes = getFile(name); sendPDF(response, bytes, name); } catch (Exception ex) { // do something here } } byte[] getFile(String filename) { byte[] bytes = null; try { java.io.File file = new java.io.File(filename); FileInputStream fis = new FileInputStream(file); bytes = new byte[(int) file.length()]; fis.read(bytes); } catch (Exception e) { e.printStackTrace(); } return bytes; } void sendPDF(HttpServletResponse response, byte[] bytes, String name) throws IOException { ServletOutputStream stream = null; stream = response.getOutputStream(); response.setContentType("application/pdf"); response.addHeader("Content-Type", "application/pdf"); response.addHeader("Content-Disposition", "inline; filename=" + name); response.setContentLength((int) bytes.length); stream.write(bytes); stream.close(); } } Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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