使用HtmlUnit库的Java下载器：下载TikTok视频

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.URL;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.apache.commons.io.IOUtils;
import com.gargoylesoftware.htmlunit.BrowserVersion;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlPage;

public class TikTokVideoDownloader {

    public static void main(String[] args) {
        // 爬虫代理加强版 
        String proxyHost = "www.proxy.cn";// 爬虫代理域名
        int proxyPort = 9010;//爬虫代理端口
        String username = "YOUR_USERNAME"; // 爬虫代理用户名
        String password = "YOUR_PASSWORD"; // 爬虫代理密码

        // 创建代理对象
        Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(proxyHost, proxyPort));

        // 创建WebClient实例，并设置代理、浏览器版本
        WebClient webClient = new WebClient(BrowserVersion.CHROME);
        webClient.getOptions().setProxyConfig(new com.gargoylesoftware.htmlunit.ProxyConfig(proxy));
        webClient.getOptions().setJavaScriptEnabled(true); // 启用JavaScript
        webClient.getOptions().setCssEnabled(false); // 禁用CSS

        // TikTok视频下载链接
        String tiktokUrl = "https://www.tiktok.com/@username/video/1234567890";

        // 创建线程池
        ExecutorService executor = Executors.newFixedThreadPool(5);

        try {
            // 使用WebClient打开TikTok视频页面
            HtmlPage page = webClient.getPage(tiktokUrl);

            // 获取视频链接
            String videoUrl = page.querySelector("video").getAttribute("src");

            // 多线程下载视频
            for (int i = 0; i < 5; i++) {
                executor.execute(new DownloadTask(videoUrl, username, password));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        // 关闭线程池和WebClient
        executor.shutdown();
        webClient.close();
    }

    // 下载任务类
    static class DownloadTask implements Runnable {
        private String videoUrl;
        private String username;
        private String password;

        public DownloadTask(String videoUrl, String username, String password) {
            this.videoUrl = videoUrl;
            this.username = username;
            this.password = password;
        }

        @Override
        public void run() {
            try {
                // 创建代理对象
                Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("proxy.abuyun.com", 9010));

                // 创建URL对象
                URL url = new URL(videoUrl);

                // 设置代理
                java.net.Authenticator.setDefault(new java.net.Authenticator() {
                    protected java.net.PasswordAuthentication getPasswordAuthentication() {
                        return new java.net.PasswordAuthentication(username, password.toCharArray());
                    }
                });

                // 打开连接
                java.net.HttpURLConnection connection = (java.net.HttpURLConnection) url.openConnection(proxy);
                connection.setRequestMethod("GET");

                // 获取输入流
                InputStream inputStream = connection.getInputStream();

                // 保存视频文件
                String fileName = "tiktok_video_" + Thread.currentThread().getId() + ".mp4";
                FileOutputStream outputStream = new FileOutputStream(fileName);
                IOUtils.copy(inputStream, outputStream);

                // 关闭流
                outputStream.close();
                inputStream.close();

                System.out.println("视频下载完成：" + fileName);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}