i've tried it. but not working. still  java.lang.NullPointerExceptionthanks

thanks reply ^^however, json is not problem now. i've tried below it. still not working.=================================================== @Override    protected void doGet(SlingHttpServletRequest request, SlingHttpServletResponse response) throws ServletException, IOException {        PrintWriter ...

I've got logs..Please check bus in java.=========================================================07.12.2017 14:19:36.544 *ERROR* [0:0:0:0:0:0:0:1 [1512623976471] POST /libs/crxde/build HTTP/1.1] org.apache.sling.engine.impl.SlingRequestProcessorImpl service: Uncaught Throwablejavax.servlet.ServletEx...