How can I display a JFreeChart in web browser with Stripes Framework

Question

This is the situation: My \'metrics.jsp\' page submits a couple variables that are needed to create the chart. The \'ProjectActionBean.java\' calls down to a few other java

Answer 1

You need to write a servlet which writes image (byte stream) into the output stream to the client. There are no need for creating files. Basically something like this should work:

public class ChartServlet extends HttpServlet {
  @Override
  protected void service(HttpServletRequest request, HttpServletResponse response) throws IOException {

        JFreeChart chart = .. // create your chart
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
    ChartUtilities.writeChartAsPNG(bos, chart, width, height);

            response.setContentType("image/png");
            OutputStream out = new BufferedOutputStream(response.getOutputStream());
            out.write(bos.toByteArray());
            out.flush();
            out.close();
  }
}

Then map it to some url in your web.xml and use from "img" tag in HTML/JSP. Obviously you can pass parameters to it etc.