android检测域名

try {
    InetAddress address = InetAddress.getByName("example.com");
    if (address != null) {
        System.out.println("域名解析成功，IP地址：" + address.getHostAddress());
    } else {
        System.out.println("域名解析失败");
    }
} catch (UnknownHostException e) {
    e.printStackTrace();
}

try {
    URL url = new URL("http://example.com");
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setRequestMethod("HEAD");
    int responseCode = connection.getResponseCode();
    if (responseCode == HttpURLConnection.HTTP_OK) {
        System.out.println("域名可达");
    } else {
        System.out.println("域名不可达，响应码：" + responseCode);
    }
} catch (IOException e) {
    e.printStackTrace();
}

try {
    URL url = new URL("https://example.com");
    HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
    connection.setRequestMethod("GET");
    connection.setSSLSocketFactory(SSLContext.getDefault().getSocketFactory());
    connection.setHostnameVerifier((hostname, session) -> true); // 注意：在生产环境中应谨慎使用
    int responseCode = connection.getResponseCode();
    if (responseCode == HttpURLConnection.HTTP_OK) {
        System.out.println("安全验证通过");
    } else {
        System.out.println("安全验证失败，响应码：" + responseCode);
    }
} catch (IOException | GeneralSecurityException e) {
    e.printStackTrace();
}