[Solved]-Highcharts and Java: saving image on server side-Highcharts

Try changing this line:

byte[] decoded = Base64.decodeBase64(strFile);

If you are sending the full image as request:

   boolean isMultipart = ServletFileUpload.isMultipartContent(request);
   System.out.println("request: "+request);
   if (!isMultipart) {
          System.out.println("File Not Uploaded");
   } else {
          FileItemFactory factory = new DiskFileItemFactory();
          ServletFileUpload upload = new ServletFileUpload(factory);
          List items = null;

          try {
               items = upload.parseRequest(request);
               System.out.println("items: "+items);
          } catch (FileUploadException e) {
               e.printStackTrace();
          }
   }