获取网络时间

@PostMapping("/getTime")
public ResponseData getTime() throws IOException {
    String webUrl = "http://www.baidu.com";
    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");
    String times = dateFormat.format(date);
    return ResponseData.handleSuccess(times);
}