URL编码转义，冒号和/不转，否则导致http链接失效

URL含有中文需要转义

参考 https://blog.csdn.net/benbenxiongyuan/article/details/10608095

自己写一个

public boolean checkURLFileIsExist(String stringURL){
        boolean isExist = false;
        String sEncodeURL;

        try{
            // URL内中文编码
            String s2 = Utils.encodeURIComponent(stringURL, "UTF-8");
            // ：和/都会被编码，导致http链接就会失效处理
            sEncodeURL = s2.replaceAll("\\%3A", ":").replaceAll("\\%2F", "/");
            URL url = new URL(sEncodeURL);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            int state = conn.getResponseCode();
            if(state == 200){
                isExist  = true;
            }else{
                isExist  = false;
            }
        }catch(Exception e){
            logger.error("checkURLFileIsExist occur exception:" + e);
            isExist = false;
            return isExist;
        }
        return isExist;
    }