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Java 實例– 獲取URL響應頭的日期信息

Java 實例 Java實例

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

Java 實例 Java實例