How to get only part of URL from HttpServletRequest?

Question

From the following URL I need to get (http://localhost:9090/dts) alone.
That is I need to remove (documents/savedoc) (OR)
need to get on

Answer 1

AFAIK for this there is no API provided method, need to customization.

String serverName = request.getServerName();
int portNumber = request.getServerPort();
String contextPath = request.getContextPath();

// try this

System.out.println(serverName + ":" +portNumber + contextPath );