HttpServletRequest

// http://hostname.com/mywebapp/servlet/MyServlet/a/b;c=123?d=789 public static String getUrl(HttpServletRequest req) {     String reqUrl = req.getRequestURL().toString();     String queryString = req.getQueryString();   // d=789     if (queryString != null) {         reqUrl += "?"+queryString;     }     return reqUrl; }

public static String getURL(HttpServletRequest req) {     String scheme = req.getScheme();             // http     String serverName = req.getServerName();     // hostname.com     int serverPort = req.getServerPort();        // 80     String contextPath = req.getContextPath();   // /mywebapp     String servletPath = req.getServletPath();   // /servlet/MyServlet     String pathInfo = req.getPathInfo();         // /a/b;c=123     String queryString = req.getQueryString();          // d=789     // Reconstruct original requesting URL     StringBuffer url =  new StringBuffer();     url.append(scheme).append("://").append(serverName);     if (serverPort != 80) {         url.append(":").append(serverPort);     }     url.append(contextPath).append(servletPath);     if (pathInfo != null) {         url.append(pathInfo);     }     if (queryString != null) {         url.append("?").append(queryString);     }     return url.toString(); }