技術標籤：其它家庭網路搭建阿里雲spring bootjavadns伺服器

家庭公網IP動態解析之阿里雲DNS

此服務使用Java開發，每隔10分鐘進行阿里雲dns解析。如果解析地址未變更，則不出發修改解析操作。

程式碼

1. AliClient 程式碼 獲取指定域名的解析記錄和修改

/**
 * 阿里雲客戶端
 *
 * @author Created by Harry Ma on 2021-01-26
 */
@Component
public class AliClient {

    private static IAcsClient client;

    public AliClient() {
        IClientProfile profile = DefaultProfile.getProfile(Constants.REGION_ID, AliDnsApplication.aliConfig.getAccessKey(), AliDnsApplication.aliConfig.getAccessSecret());
        // 若報Can not find endpoint to access異常，請新增以下此行程式碼
        // DefaultProfile.addEndpoint("cn-hangzhou", "cn-hangzhou", "Alidns", "alidns.aliyuncs.com");
        client = new DefaultAcsClient(profile);
    }

    public String getFirstDomain() {
        DescribeDomainsRequest request = new DescribeDomainsRequest();
        DescribeDomainsResponse response;
        try {
            response = client.getAcsResponse(request);
            List<DescribeDomainsResponse.Domain> domains = response.getDomains();
            if (domains.size() > 0) {
                return domains.get(0).getDomainName();
            }
        } catch (ClientException e) {
            e.printStackTrace();
        }
        return "";
    }

    /**
     * 獲取指定解析記錄
     *
     * @param domainName 域名
     * @param filterRR   獲取的解析記錄
     * @return 解析記錄
     */
    public DescribeDomainRecordsResponse.Record getRecord(String domainName, String filterRR) {
        DescribeDomainRecordsRequest describeDomainRecordsRequest = new DescribeDomainRecordsRequest();
        describeDomainRecordsRequest.setDomainName(domainName);
        DescribeDomainRecordsResponse describeSubDomainRecordsResponse;
        try {
            describeSubDomainRecordsResponse = client.getAcsResponse(describeDomainRecordsRequest);
            for (DescribeDomainRecordsResponse.Record domainRecord : describeSubDomainRecordsResponse.getDomainRecords()) {
                if (filterRR != null && filterRR.equals(domainRecord.getRR())) {
                    return domainRecord;
                }
            }
        } catch (ClientException e) {
            e.printStackTrace();
        }
        return null;
    }

    public void updateRecordIp(String ip, String recordId, String rR) {
        UpdateDomainRecordRequest request = new UpdateDomainRecordRequest();
        request.setRR(rR);
        request.setRecordId(recordId);
        request.setType(Constants.TYPE);
        request.setValue(ip);
        try {
            HttpResponse response = client.doAction(request);
            if (response.isSuccess()) {
                System.out.println("DNS解析成功^_^");
                return;
            }
            if (response.getHttpContentString().contains("The DNS record already exists.")){
                System.err.println("當前解析記錄已存在...");
            }
            System.err.println("DNS解析失敗,請檢查$_$");
        } catch (ClientException e) {
            System.err.println(e.getErrMsg());
        }
    }
}
 

2. 定時任務類

/**
 * 定時修改阿里雲動態DNS
 *
 * @author Created by Harry Ma on 2021-01-26
 */
@Component
@EnableScheduling
public class DnsSchedule {


    @Resource
    private AliClient aliClient;

    /**
     * 每10分鐘修改一次雲解析記錄
     */
    @Scheduled(fixedRate = 1000 * 60 * 10)
    private void dnsTasks() {
        String nowIp = getNowIp();
        if (nowIp == null || nowIp.equals("")) {
            System.err.println("獲取當前IP為空，請檢查");
            return;
        }
        String firstDomain = aliClient.getFirstDomain();
        System.out.printf("獲取到的domain為: %s%n", firstDomain);
        DescribeDomainRecordsResponse.Record record = aliClient.getRecord(firstDomain, AliDnsApplication.aliConfig.getRr());
        System.out.printf("獲取到指定RR(%s)為: %s%n", AliDnsApplication.aliConfig.getRr(), JSONObject.toJSONString(record));
        if (!nowIp.equals(record.getValue())){
            aliClient.updateRecordIp(nowIp, record.getRecordId(), AliDnsApplication.aliConfig.getRr());
        }
        System.out.println("當前IP與解析IP相同，無需更新...");
    }

    private String getNowIp() {
        HttpGet httpGet = new HttpGet(Constants.REQUEST_IP_URL);
        httpGet.addHeader(Constants.ACCEPT_STR, Constants.ACCEPT_VALUE);
        httpGet.addHeader(Constants.CONNECTION_STR, Constants.CONNECTION_VALUE);
        httpGet.addHeader(Constants.USER_AGENT_STR, Constants.USER_AGENT_VALUE);
        CloseableHttpClient client = HttpClients.createDefault();
        try {
            CloseableHttpResponse response = client.execute(httpGet);
            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                String result = EntityUtils.toString(response.getEntity());
                return Objects.requireNonNull(JSONObject.parseObject(result)).getString(Constants.IP_STR);
            }
        } catch (IOException e) {
            System.err.println(e.getMessage());
        }
        return "";
    }
}
 

3. 常量類

/**
 * @author Created by Harry Ma on 2021-01-26
 */
public interface Constants {

    String TYPE = "A";
    String REGION_ID = "cn-hangzhou"; //地域ID 預設
    String IP_STR = "ip";
    String REQUEST_IP_URL = "https://api.ipify.org/?format=json";
    String ACCEPT_STR = "Accept";
    String CONNECTION_STR = "Connection";
    String USER_AGENT_STR = "User-Agent";
    String ACCEPT_VALUE = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
    String CONNECTION_VALUE = "Keep-Alive";
    String USER_AGENT_VALUE = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0";

    String SEPARATOR_STR = ":";
    String COMMA = ",";
    String BLANK_STR = "";
}
 

如有不依賴jdk執行需求，請自行查詢解決方法

本程式碼已上傳至gitee和github