您可以使用Java的URLConnection类来下载mp3文件。以下是一个示例代码: ```java import java.io.BufferedInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.net.URL; import java.net.URLConnection; public class Mp3Downloader { public static void main(String[] args) { String mp3Url = "http://example.com/example.mp3"; String savePath = "C:/example.mp3"; try { URL url = new URL(mp3Url); URLConnection conn = url.openConnection(); conn.connect(); BufferedInputStream bis = new BufferedInputStream(conn.getInputStream()); FileOutputStream fos = new FileOutputStream(savePath); byte[] buffer = new byte[1024]; int count; while ((count = bis.read(buffer, 0, 1024)) != -1) { fos.write(buffer, 0, count); } fos.close(); bis.close(); System.out.println("Download completed."); } catch (IOException e) { e.printStackTrace(); } } } ``` 在上面的代码中,您需要将mp3Url替换为要下载的mp3文件的URL,将savePath替换为要保存文件的路径。运行该代码将下载mp3文件并将其保存到指定路径。