JFreeChart chart = sbi.createChart();
ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
String requestIdentity = null;
UUIDGenerator uuidGen = UUIDGenerator.getInstance();
UUID uuid = uuidGen.generateTimeBasedUUID();
requestIdentity = uuid.toString();
requestIdentity = requestIdentity.replaceAll("-", "");
String path_param = requestIdentity;
String dir=System.getProperty("java.io.tmpdir");
String path=dir+"/"+requestIdentity+".png";