Java 代码视频下载

在Java中下载视频文件通常涉及到网络请求和文件操作。你可以使用像`java.net.URL`、`HttpURLConnection`或更现代的库如`Apache HttpClient`来进行HTTP请求获取视频流，然后使用`java.io.FileOutputStream`将其保存到本地。以下是一个简单的示例，展示如何使用`HttpURLConnection`下载视频：

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;

public class VideoDownloader {
    public static void downloadVideo(String videoUrl, String savePath) throws IOException {
        URL url = new URL(videoUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("GET");
        connection.connect();

        int contentLength = connection.getContentLengthLong();
        byte[] buffer = new byte[4096];
        long totalDownloaded = 0;
        FileOutputStream outputStream = new FileOutputStream(savePath);

        try {
            while (totalDownloaded < contentLength) {
                int bytesRead = connection.getInputStream().read(buffer);
                if (bytesRead == -1) break; // End of stream

                outputStream.write(buffer, 0, bytesRead);
                totalDownloaded += bytesRead;
                System.out.println("Downloaded " + totalDownloaded + " bytes.");
            }
        } finally {
            outputStream.close();
            connection.disconnect();
        }

        System.out.println("Video downloaded successfully to " + savePath);
    }
}