android cdn加速器

import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.URL;

public class CDNDownload {
    public static void main(String[] args) {
        String fileUrl = "https://cdn.example.com/app-update.apk";
        String savePath = "/path/to/save/update.apk";

        try {
            URL url = new URL(fileUrl);
            InputStream inputStream = new BufferedInputStream(url.openStream());
            FileOutputStream fileOutputStream = new FileOutputStream(savePath);

            byte[] buffer = new byte[1024];
            int bytesRead;
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                fileOutputStream.write(buffer, 0, bytesRead);
            }

            fileOutputStream.close();
            inputStream.close();

            System.out.println("Download completed!");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}