Find your resin directory, there is a resin.conf file under the conf folder, open the editing with UltraEdit or Xmlspy
Find a place similar to the following code to add the following code!
web-app>
Description: ID = "/ gst" is how the virtual directory is browsing,
Http: // localhost: 8080 / gst; App-DIR = "D: / JSP / JSPGST" virtual directory pointed to location; you Class class stored; Other variable positions;