在同一个变量中支持HttpURLConnection和HttpsURLConnection？

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class HttpURLConnectionExample {
    public static void main(String[] args) {
        try {
            String urlString = "https://www.example.com";
            URL url = new URL(urlString);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();

            // 判断是否为https请求
            if (urlString.startsWith("https")) {
                // 使用HttpsURLConnection
                connection = (HttpsURLConnection) connection;
            }

            // 设置请求方法
            connection.setRequestMethod("GET");

            // 获取响应
            int responseCode = connection.getResponseCode();
            System.out.println("Response Code: " + responseCode);

            // 读取响应内容
            BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String inputLine;
            StringBuffer response = new StringBuffer();

            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();

            // 输出响应内容
            System.out.println(response.toString());

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

// 信任所有证书
TrustManager[] trustAllCerts = new TrustManager[]{
    new X509TrustManager() {
        public java.security.cert.X509Certificate[] getAcceptedIssuers() { return new java.security.cert.X509Certificate[]{}; }
        public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) { }
        public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) { }
    }
};

// 设置SSL上下文
SSLContext sc = SSLContext.getInstance("SSL");
sc.init(null, trustAllCerts, new java.security.SecureRandom());

// 设置HttpsURLConnection的SSLSocketFactory
((HttpsURLConnection) connection).setSSLSocketFactory(sc.getSocketFactory());