package hello; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * JSON Encoding Test */ @SuppressWarnings("serial") public class JsonServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { // Set content type to JSON res.setHeader(Common.HEADER_CONTENT_TYPE, Common.CONTENT_TYPE_JSON); // Write JSON encoded message to the response. Common.MAPPER.writeValue(res.getOutputStream(), new Common.HelloMessage()); } }