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【Java】获取某网站的服务器时间

作者:癫狂俗人 / 发布于2014/10/14/ 603


	public void getNetTime() {
	 new Thread(new Runnable() {
	 @Override
	 public void run() {
	 int count = 0;
	 while(count < 30){
	 try {
	 //打印百度的服务器时间
	 System.out.print("baidu:====");
	 getNetTime("http://www.baidu.com");
	 //打印12306的服务器时间
	 System.out.print("12306:====");
	 getNetTime("http://www.12306.cn");
	 //打印当前系统时间
	 Calendar calendar = Calendar.getInstance();
	 calendar.setTimeInMillis(System.currentTimeMillis());
	 System.out.print("system:====");
	 printTime(calendar,calendar.get(Calendar.DAY_OF_WEEK));
	
	 //一秒后在执行
	 Thread.sleep(1000);
	 count++;
	 } catch (IOException e) {
	 e.printStackTrace();
	 } catch (InterruptedException e) {
	 e.printStackTrace();
	 }
	 }
	 }
	 }).start();
	 }
	
	
	 /**
	 * 获取网站时间
	 * @throws IOException
	 */
	 public void getNetTime(String urlStr) throws IOException{
	 // 取得资源对象
	 URL url = new URL("http://www.baidu.com");
	 // 生成连接对象
	 URLConnection uc = url.openConnection();
	 uc.setConnectTimeout(1000);
	 // 发出连接
	 uc.connect();
	 //获取服务器时间
	 Long tempTime = uc.getDate();
	 Calendar calendar = Calendar.getInstance();
	 calendar.setTimeInMillis(tempTime);
	 int week = calendar.get(Calendar.DAY_OF_WEEK);
	 //输出出来
	 printTime(calendar,week);
	
	 }
	
	
	 /**
	 * 打印时间
	 * @param calendar
	 * @param week
	 */
	 public void printTime(Calendar calendar,int week){
	 System.out.println("Time is :\t"
	 + calendar.get(Calendar.YEAR) + "年"
	 + (calendar.get(Calendar.MONTH) + 1) + "月"
	 + calendar.get(Calendar.DAY_OF_MONTH)+ "日"
	 + calendar.get(Calendar.HOUR_OF_DAY)+ "点"
	 + calendar.get(Calendar.MINUTE)+ "分"
	 + calendar.get(Calendar.SECOND)+ "秒"
	 + calendar.get(Calendar.DAY_OF_WEEK)
	 + getWeekToString(week)
	 );
	 }
	
	 /**
	 * 转化成星期
	 * @param week
	 * @return
	 */
	 public String getWeekToString(int week){
	 String [] strArr =
	 new String [] {"星期日","星期一","星期二","星期三","星期四","星期五","星期六"};
	 return strArr[week+1];
	 /*String weekStr = null;
	 switch(week){
	 case 1 :
	 weekStr = "星期日";
	 break;
	 case 2 :
	 weekStr = "星期一";
	 break;
	 case 3 :
	 weekStr = "星期二";
	 break;
	 case 4 :
	 weekStr = "星期三";
	 break;
	 case 5 :
	 weekStr = "星期四";
	 break;
	 case 6 :
	 weekStr = "星期五";
	 break;
	 case 7 :
	 weekStr = "星期六";
	 break;
	 }
	 return weekStr;*/
	 }

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