Embedded jetty server causing issues with UTF-8 characters - jetty

Question

Code from servlet file
#Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
{
try {
Map map = req.getParameterMap();
HashMap<String, Object> paramsMap = new HashMap<String, Object>(map);
String action = HTTPUtil.getInstance().getPropertyFromHttpRequest(PARAM_ACTION, paramsMap, false);
String service = HTTPUtil.getInstance().getPropertyFromHttpRequest(PARAM_SERVICE_NAME, paramsMap, false);
String requestBody = (String)IOUtils.toString(req.getInputStream());
....
One of the field from requestBody is rendered as "Brad?" instead of "Brad's" in requestBody. Ideally "Brad's" should have been rendered. Which leads to incorrect data being stored in DB.
This is how jetty server is started :
server = new Server(new QueuedThreadPool(10));
ServerConnector connector = new ServerConnector(server);
connector.setPort(getPort());
server.addConnector(connector);
HandlerCollection handlerCollection = getHandlers();
server.setHandler(handlerCollection);
server.setStopAtShutdown(true);
server.setStopTimeout(1000);
server.start();
getHandlers() return HandlerCollection is created as:
HandlerCollection handlers = new HandlerCollection(true);
ServletContextHandler handler = new ServletContextHandler();
handler.getContextPath();
handler.addServlet(new ServletHolder(new TestServlet(), "/test");
handlers.addHandler(handler);
Jetty Version 9.2.11.v20150529
curl -X POST \
'http://master92.XYZ.com:7777/health?test=10&action=10' \
-H 'cache-control: no-cache' \
-H 'content-type: application/json; charset=utf-8' \
-d '{"name":"ABA …"}'
Request body shows up as
{"name": "ABA ?" } when dumped to logs or console

Answer 1

The issue was resolved with -Dfile.encoding=UTF-8 option.