Method exists

src/main/java/cn/hellohao/utils/GetProtocol.java:63–74

(String url,String referer)

    }
    //是否能连接上
   private boolean exists(String url,String referer) {
        try {
            HttpURLConnection con = (HttpURLConnection) new URL(url).openConnection();
            con.setConnectTimeout(3000);
            con.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36");
            con.setRequestProperty("referer", StringUtils.isBlank(referer)?"no-referrer":referer);
            System.out.println(con.getResponseCode() );
            return (con.getResponseCode() == 200);
        } catch (Exception e) {
            return false;
        }
    }

    public static void main(String[] args){