Java 实例以下实例演示了如何使用 HttpURLConnection 的 httpCon.getDate() 方法来获取 URL响应头的日期信息：
Main.java 文件
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("http://www.zhishitu.com"); 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)); }}
以上代码运行输出结果为：
Date: Mon May 04 11:57:06 CST 2015