Java 實例– 獲取URL響應頭的日期信息
以下實例演示瞭如何使用HttpURLConnection 的httpCon.getDate() 方法來獲取URL響應頭的日期信息:
/* author by w3cschool.cc Main.java */ import java.net.HttpURLConnection; import java.net.URL; import java.util.Date; public class Main{ public static void main(String args[]) throws Exception { URL url = new URL("../../www.w3cschool.cc/index.html"); HttpURLConnection httpCon = (HttpURLConnection) url.openConnection(); long date = httpCon.getDate(); if (date == 0) System.out.println("无法获取信息。"); else System.out.println("Date: " + new Date(date)); } }
以上代碼運行輸出結果為:
Date: Mon May 04 11:57:06 CST 2015