JAVA怎么下载大文件

您可以使用Java的URL类和URLConnection类来下载大文件。下面是一个简单的示例代码：

import java.io.BufferedInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.net.URL;import java.net.URLConnection;public class FileDownloader {public static void main(String[] args) {String fileURL = "http://example.com/largefile.zip";String savePath = "/path/to/save/directory/largefile.zip";try {URL url = new URL(fileURL);URLConnection connection = url.openConnection();InputStream inputStream = connection.getInputStream();BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);FileOutputStream outputStream = new FileOutputStream(savePath);byte[] buffer = new byte[1024];int bytesRead;while ((bytesRead = bufferedInputStream.read(buffer)) != -1) {outputStream.write(buffer, 0, bytesRead);}outputStream.close();bufferedInputStream.close();System.out.println("文件下载完成！");} catch (IOException e) {e.printStackTrace();}}}

您只需将fileURL更改为要下载的文件的URL，将savePath更改为要将文件保存到的路径。然后运行该代码，它将从指定的URL下载文件并将其保存到本地。