Root URl of the servlet

Question

I want to get the root url of my web application from one of the servlet.

If I deploy my application in \"www.mydomain.com\" I want to get the root url like \"http:/

Answer 1

This function helps you to get your base URL from a HttpServletRequest:

  public static String getBaseUrl(HttpServletRequest request) {
    String scheme = request.getScheme() + "://";
    String serverName = request.getServerName();
    String serverPort = (request.getServerPort() == 80) ? "" : ":" + request.getServerPort();
    String contextPath = request.getContextPath();
    return scheme + serverName + serverPort + contextPath;
  }