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很多朋友都想知道java怎麼獲取網絡時間?下面就一起來了解一下吧~
通過網站獲取網絡時間:
import java.io.IOException;import java.net.MalformedURLException;import java.net.URL;import java.net.URLConnection;import java.text.SimpleDateFormat;import java.util.Date;public class DateDemo { public static void main(String[] args) { String webUrlt = "http://www.taobao.com"; String webUrlb = "http://www.baidu.com"; System.out.println(getNetworkTime(webUrlt) + " [淘寶]"); System.out.println(getNetworkTime(webUrlb) + " [百度]"); } public static String getNetworkTime(String webUrl) { try { URL url = new URL(webUrl); URLConnection conn = url.openConnection(); conn.connect(); long dateL = conn.getDate(); Date date = new Date(dateL); SimpleDateFormat dateFormat = new SimpleDateFormat("YYYY-MM-dd HH:mm:ss"); return dateFormat.format(date); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return ""; } }
通過java.util.Date類獲取本地時間:
Date date = new Date(); SimpleDateFormat dateFormat = new SimpleDateFormat("YYYY-MM-dd HH:mm:ss"); System.out.println("date=" + dateFormat.format(date.getTime()));
最終結果:
2019-06-17 01:31:02 [淘寶]2019-06-17 01:31:02 [百度]