Java 根據url下載網絡資源
URL:統一資源定位符
例如:https://www.baidu.com
URL【統一資源定位符】:定位資源的,定位互聯網上的某一個資源。
DNS 域名解析:www.baidu.com【某一域名】指向 39.156.69.79【某一網站空間IP】
URL 組成:協議://ip地址:端口/項目名/資源
package lesson04;import java.net.MalformedURLException;import java.net.URL;/** * URL:統一資源定位符 */public class URLDemo1 { public static void main(String[] args) throws MalformedURLException { URL url = new URL('http://localhost:8080/helloworld/index.jsp?username=kuangshen&password=123'); //協議名 System.out.println(url.getProtocol()); //主機名-主機ip System.out.println(url.getHost()); //端口 System.out.println(url.getPort()); //地址-文件路徑 System.out.println(url.getPath()); //文件-全路徑 System.out.println(url.getFile()); //查詢部分-參數 System.out.println(url.getQuery()); }}
URL下載資源
package lesson04;import java.io.FileOutputStream;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;/** * URL下載資源 */public class URLDown { public static void main(String[] args) throws Exception { //1、下載地址 URL url = new URL('https://m10.music.126.net/20201121104035/2c5eb73ce4421a090b62647f6c486e2c/yyaac/obj/wonDkMOGw6XDiTHCmMOi/3625445007/7d37/4109/d0ef/d56e8176f5789a4e6f8b2173ce500bf6.m4a'); //2、連接到這個資源 HTTP HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); InputStream inputStream = urlConnection.getInputStream(); FileOutputStream fos = new FileOutputStream('f6.m4a'); byte[] buffer = new byte[1024]; int len; while ((len = inputStream.read(buffer)) != -1){ fos.write(buffer, 0, len); //寫出這個數據 } //關閉 fos.close(); inputStream.close(); //斷開連接 urlConnection.disconnect(); }}
效果一覽
以上就是Java 根據url下載網絡資源的詳細內容,更多關于Java 下載網絡資源的資料請關注好吧啦網其它相關文章!
相關文章: