老师您的工具类，获取外网ip 是ipv6 一直是0:0:0:0:0:0:0:1
我找个两个获取ipv4的方法

    /**
     * 获取公网ipv4地址
     * @return
     */
    public static String getV4IP(){
        String ip = "";
        String chinaz = "http://ip.chinaz.com";

        StringBuilder inputLine = new StringBuilder();
        String read = "";
        URL url = null;
        HttpURLConnection urlConnection = null;
        BufferedReader in = null;
        try {
            url = new URL(chinaz);
            urlConnection = (HttpURLConnection) url.openConnection();
            in = new BufferedReader( new InputStreamReader(urlConnection.getInputStream(),"UTF-8"));
            while((read=in.readLine())!=null){
                inputLine.append(read+"\r\n");
            }
            //System.out.println(inputLine.toString());
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally{
            if(in!=null){
                try {
                    in.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }


        Pattern p = Pattern.compile("\\<dd class\\=\"fz24\">(.*?)\\<\\/dd>");
        Matcher m = p.matcher(inputLine.toString());
        if(m.find()){
            String ipstr = m.group(1);
            ip = ipstr;
            //System.out.println(ipstr);
        }
        return ip;
    }

    /**
     * 调用cmd，查询内网ipv4ip
     * @return
     */
    public static String getLocalIPForCMD(){
        StringBuilder sb = new StringBuilder();
        String command = "cmd.exe /c ipconfig | findstr IPv4";
        try {
            Process p = Runtime.getRuntime().exec(command);
            BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
            String line = null;
            while((line = br.readLine()) != null){
                line = line.substring(line.lastIndexOf(":")+2,line.length());
                sb.append(line);
            }
            br.close();
            p.destroy();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return sb.toString();
    }

1.请问 setOperatorIp的时候应该调用哪个，您在工作的实际业务中通常设置内网的ipv4还是公网的ipv4

2.请问根据现在的业务，发送邮件，应该在邮件中发送些什么信息，想不出来当前项目需要发送邮件的业务场景
另:测试发送邮件，发送双方都使用qq邮箱，发送方的密码不能用原qq密码，必须使用生成的第三方服务授权码(POP3/IMAP/SMTP/Exchange/CardDAV/CalDAV服务) ，不然就抛异常了，请问能解决吗，使其使用自身的qq密码就可以