java 实现网易云音乐下载和播放 - 好文

不废话直接上代码

首先是下载工具类根据url 下载文件
import java.io.BufferedInputStream; import java.io.BufferedReader; import
java.io.DataOutputStream; import java.io.File; import java.io.FileInputStream;
import java.io.FileOutputStream; import java.io.IOException; import
java.io.InputStream; import java.io.InputStreamReader; import
java.io.OutputStream; import java.io.OutputStreamWriter; import
java.net.HttpURLConnection; import java.net.MalformedURLException; import
java.net.URL; import java.net.URLConnection; import java.util.Iterator; import
java.util.Map; /** *
Java原生的API可用于发送HTTP请求，即java.net.URL、java.net.URLConnection，这些API很好用、很常用， *
但不够简便； * * 1.通过统一资源定位器（java.net.URL）获取连接器（java.net.URLConnection） 2.设置请求的参数
3.发送请求 * 4.以输入流的形式获取返回内容 5.关闭输入流 * * @author LZH * */ public class
HttpConnectionUtil { /** * * @param urlPath * 下载路径 * @param downloadDir *
下载存放目录 * @return 返回下载文件路径 */ @SuppressWarnings("finally") public static String
downloadFile(String urlPath, String downloadDir) { File file = null; String
path=null; try { // 统一资源 URL url = new URL(urlPath); // 连接类的父类，抽象类
URLConnection urlConnection = url.openConnection(); // http的连接类
HttpURLConnection httpURLConnection = (HttpURLConnection) urlConnection; //
设定请求的方法，默认是GET httpURLConnection.setRequestMethod("POST"); // 设置字符编码
httpURLConnection.setRequestProperty("Charset", "UTF-8"); // 打开到此 URL
引用的资源的通信链接（如果尚未建立这样的连接）。 httpURLConnection.connect(); // 文件大小 int fileLength =
httpURLConnection.getContentLength(); // 文件名 String filePathUrl =
httpURLConnection.getURL().getFile(); String fileFullName =
filePathUrl.substring(filePathUrl.lastIndexOf(File.separatorChar) + 1); //
System.out.println("file length---->" + fileLength); URLConnection con =
url.openConnection(); BufferedInputStream bin = new
BufferedInputStream(httpURLConnection.getInputStream()); path = downloadDir +
File.separatorChar + fileFullName; file = new File(path); if
(!file.getParentFile().exists()) { file.getParentFile().mkdirs(); }
OutputStream out = new FileOutputStream(file); int size = 0; int len = 0;
byte[] buf = new byte[1024]; while ((size = bin.read(buf)) != -1) { len +=
size; out.write(buf, 0, size); // 打印下载百分比 // System.out.println("下载了-------> "
+ len * 100 / fileLength + // "%\n"); } bin.close(); out.close(); } catch
(MalformedURLException e) { // TODO Auto-generated catch block
e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch
block e.printStackTrace(); } finally { return path; } } }
然后是播放类
import java.io.BufferedInputStream; import java.io.FileInputStream; import
javazoom.jl.player.Player; public class MP3Player { private String filename;
private Player player; public MP3Player(String filename) { this.filename =
filename; } public void play() { try { BufferedInputStream buffer = new
BufferedInputStream(new FileInputStream(filename)); player = new
Player(buffer); player.play(); } catch (Exception e) { System.out.println(e); }
} public void stop() { try { player.close(); } catch (Exception e) {
System.out.println(e); } } }
重点来啦这个 id 是搜索出来歌曲的url id

id=316277
public class Test { public static void main(String[] args) { // 下载文件测试 String
downloadFile =
HttpConnectionUtil.downloadFile("http://music.163.com/song/media/outer/url?id=316277",
"D:\\cer"); System.out.println("下载返回的地址："+downloadFile); try { //等待下载
Thread.sleep(2000); } catch (InterruptedException e) { // TODO Auto-generated
catch block e.printStackTrace(); } MP3Player mp3 = new MP3Player(downloadFile);
//播放 mp3.play(); } }

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