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最新推荐文章于 2025-01-13 08:15:00 发布

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最新推荐文章于 2025-01-13 08:15:00 发布

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https://www.baidu.com/

统一资源定位符：定位资源定位互联网上的某一个资源

DNS域名解析 www.baidu.com xxx.x…x…x

协议：//IP地址：端口/项目名/资源

package com.caster.IP.Lesson04;

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

public class URLDown {
    public static void main(String[] args) throws Exception{
        //1.下载地址
        URL url = new URL("https://m801.music.126.net/20210310205751/b573c0bbe5cdfe234eaf49a02d567c32/jdyyaac/obj/w5rDlsOJwrLDjj7CmsOj/7813139243/057c/8e68/f262/d25ca515923d07649b47e51e9da092db.m4a");
        //2.连接到这个资源 HTTP
        HttpURLConnection urlConnection = (HttpURLConnection)url.openConnection();
        InputStream inputStream = urlConnection.getInputStream();
        FileOutputStream fileOutputStream = new FileOutputStream("music.m4a");
        byte[] bytes = new byte[1024];
        int len;
        while ((len = inputStream.read(bytes))!=-1){
            fileOutputStream.write(bytes,0,len);
        }
        fileOutputStream.close();
        inputStream.close();
        urlConnection.disconnect();
    }
}