My first post (thank): report with subreport open

[archimede76]

Hi all, i'm italian developer and this is my first post.

In my JSP web application, developed with Eclipse, all work good. I have more and more report and i open this correct with the posted servlet and all work good. Now, yesterday i have a report with subreport create. If i open this from iReport IDE, all work good and i see the report (with subreport inside) correct. If i put the files report.jasper and subreport.jasper in report folder of my application, and i click on the "report open" button of my web page, i see not error message but a blank page.

I have choose the option "put the subreport path in a parameter SUBREPORT_DIR" and i give this parameter from serlvet, with same path of main report. I think, the cause of problem is subreport path.

Can help me?

Very thank,

Archimede

Code:

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {		// TODO Auto-generated method stub		String rptFileName = request.getParameter("rptFileName").toString();		String rptFolder = "/report/"; 		JasperPrint jp = null;				ServletContext context = this.getServletContext();						Map parameters = new HashMap();				parameters.put("mainid", new Integer (64));		parameters.put("SUBREPORT_DIR", context.getRealPath(rptFolder));		                String cnHost = "localhost";		String cnName = "edilgestdb";		String cnLogin = "edilgestuser";		String cnPsw = "edilgestpsw";		Connection Conn = null; 						try {			Class.forName("org.postgresql.Driver").newInstance();		} catch (InstantiationException e) {			// TODO Auto-generated catch block			e.printStackTrace();		} catch (IllegalAccessException e) {			// TODO Auto-generated catch block			e.printStackTrace();		} catch (ClassNotFoundException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}				try {			Conn = DriverManager.getConnection("jdbc:postgresql://"+cnHost+"/" + cnName + "?user=" + cnLogin + "&password=" + cnPsw);		} catch (SQLException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}				try {			jp = JasperFillManager.fillReport(context.getRealPath(rptFolder + rptFileName + ".jasper"), parameters, Conn);		} catch (JRException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}				ServletOutputStream outStream = response.getOutputStream();				try {			JasperExportManager.exportReportToPdfStream(jp, outStream);		} catch (JRException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}			}