获得用户请求的URL全路径

  
  
  
  

   
   
   
   public static String getAppURL(HttpServletRequest request)
  
  
  
  
    {
        StringBuilder buf = new StringBuilder();
        int port = request.getServerPort();
        if(port < 0)
            port = 80;
        String scheme = request.getScheme();
        buf.append(scheme).append("://").append(request.getServerName());
        if("http".equals(scheme) && port != 80 || "https".equals(scheme) && port != 443)
            buf.append(":").append(port);
        buf.append(request.getContextPath());
        return buf.toString();
    }

这段代码很简单，知道了HttpServletRequest类中的相关方法的作用即可写出。