用java抓取网页并下载视频

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

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

public class VideoDownloader {
    public static void main(String[] args) {
        String targetUrl = "https://example.com"; // 目标网页的URL

        try {
            // 发送HTTP GET请求
            Document doc = Jsoup.connect(targetUrl).get();

            // 解析HTML内容，提取视频URL
            Elements videoElements = doc.select("video"); // 假设视频标签为 <video>
            for (Element videoElement : videoElements) {
                String videoUrl = videoElement.attr("src"); // 假设视频URL存储在 src 属性中

                // 下载视频
                downloadVideo(videoUrl);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static void downloadVideo(String videoUrl) {
        try {
            URL url = new URL(videoUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.connect();

            // 获取视频文件名
            String fileName = videoUrl.substring(videoUrl.lastIndexOf("/") + 1);

            // 创建输入流和输出流
            InputStream inputStream = new BufferedInputStream(connection.getInputStream());
            FileOutputStream outputStream = new FileOutputStream(fileName);

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

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

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