定时任务-更新IP

更新域名解析定时任务，解析服务商No-IP

import cn.hutool.http.HttpRequest;
import cn.hutool.core.codec.Base64;
import cn.hutool.http.HttpUtil;
import jakarta.annotation.PostConstruct;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;

@Component
public class MyScheduledTask {


    // ⚙️ 配置信息（请替换为你的）
    private static final String USERNAME = "example";
    private static final String PASSWORD = "example";
    private static final String HOSTNAME = "example.ddns.net"; // 要更新的域名

    // 🌐 API 地址
    private static final String UPDATE_URL = "https://dynupdate.no-ip.com/nic/update";
    private static final String IP6_CHECK_URL = "https://ipv6.icanhazip.com"; // 获取公网 IPv6

    @Scheduled(cron = "0 0 * * * *")
    public void updateDNSTask() {
        updateDNSUtil();
    }
    @PostConstruct
    public void init(){
        updateDNSUtil();
    }

    public void updateDNSUtil() {
        try {
            // 1. 获取当前公网 IPv6
            Process process = Runtime.getRuntime().exec("curl -6 --max-time 10 "+IP6_CHECK_URL);
            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
            String currentIPv6 = reader.readLine();
            System.out.println(currentIPv6);
            if (currentIPv6 == null || currentIPv6.trim().isEmpty()) {
                System.err.println("❌ 无法获取公网 IPv6 地址");
                return;
            }
            System.out.println("🌐 当前公网 IPv6: " + currentIPv6);

            // 2. 更新 No-IP AAAA 记录
            String result = updateNoIpAAAA(currentIPv6);
            System.out.println("✅ 更新结果: " + result);

        } catch (Exception e) {
            System.err.println("❌ 更新失败: " + e.getMessage());
        }
    }

    /**
     * 更新 No-IP 的 AAAA 记录
     */
    public static String updateNoIpAAAA(String ipv6) {
        // 构造请求 URL: https://dynupdate.no-ip.com/nic/update?hostname=xxx&myip=IPv6
        String urlString = UPDATE_URL +
                "?hostname=" + URLEncoder.encode(HOSTNAME, StandardCharsets.UTF_8) +
                "&myip=" + URLEncoder.encode(ipv6, StandardCharsets.UTF_8);

        // 设置认证头：Basic Base64(username:password)
        String auth = USERNAME + ":" + PASSWORD;
        String encodedAuth = Base64.encode(auth.getBytes(StandardCharsets.UTF_8));

        // 使用 Hutool HttpUtil 发送请求
        try {
            String response = HttpRequest.get(urlString)
                    .header("Authorization", "Basic " + encodedAuth)
                    .header("User-Agent", "NoIP-Updater-Java/1.0")
                    .timeout(10000)
                    .execute()
                    .body();
            return response != null ? response.trim() : "Unknown response";
        } catch (Exception e) {
            // 处理异常情况
            return "Error: " + e.getMessage();
        }
    }

}