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jspopenshiftjfreechart

How can i store image in my project hosted in openshift?

i am trying to create chart and save chart in image folder. it works fine locally but when i hosted it in openshift online it doesn't work. 

String root = getServletContext().getRealPath("/");
   File savedFile = new File(root+"\\images\\piechart.jpg");
   ChartUtilities.saveChartAsJPEG(savedFile, piechart, 700, 400);

root gives null so saving is not working ... please help to store image.

Solution

  • Instead of saving the chart as an image in a local folder, you can use one of the variations of ChartUtilities.writeChartAs… to write the image to the servlet's OutputStream.

    ChartUtilities.writeChartAsJPEG(response.getOutputStream(), …);
ChartUtilities.writeChartAsPNG(response.getOutputStream(), …);