getRequestURL()与getQueryString()获取用户请求URL

//获取用户请求URL地址
	  public static String getRequestUrl(HttpServletRequest request) {
		    String targetUrl = request.getRequestURL().toString();
		    String queryString = request.getQueryString();
		    if (StringUtils.isNotBlank(queryString)) {
		      try {
		        if (request.getCharacterEncoding() != null)
		          queryString = URLDecoder.decode(queryString, request.getCharacterEncoding());
		      }
		      catch (Exception e)
		      {
		        e.printStackTrace();
		      }
		      targetUrl = targetUrl + "?" + queryString;
		    }
		    return targetUrl;
		  }