UDP下载网络资源

package lessonIP;

import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

public class URLDemo01 {
    public static void main(String[] args) throws Exception {
      //  URL url = new  URL("https://s2.music.126.net/style/web2/img/frame/topbar.png?bdc051d971fde6bbaf5668d0ec259c92");
   //下载地址
        URL url=new URL("https://s2.music.126.net/style/web2/img/frame/topbar.png?bdc051d971fde6bbaf5668d0ec259c92");
        //2.连接到这个资源 HTTP
        HttpURLConnection urlConnection=(HttpURLConnection) url.openConnection();
        InputStream inputStream=urlConnection.getInputStream();
        FileOutputStream fos=new FileOutputStream("11.png");
        byte[]buffer=new byte[1024];
        int len;
        while((len=inputStream.read(buffer))!=-1){
            fos.write(buffer,0,len);//写出这个数据

        }
        fos.close();
        inputStream.close();
        urlConnection.disconnect();//断开连接
        /*System.out.println(url.getProtocol());//协议
        System.out.println(url.getHost());//主机ip
        System.out.println(url.getPort());//端口
        System.out.println(url.getPath());//文件地址
        System.out.println(url.getFile());//文件全路径
        System.out.println(url.getQuery());//参数*/
    }
}