Java 如何以秒为单位获取当前的 UTC 时间戳
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How to get current UTC timestamp in seconds
提问by kreya
How to get current time-stamp in UTC/GMT and then How to convert this time-stamp into seconds ? Itry this but its thrw exception
如何在 UTC/GMT 中获取当前时间戳，然后如何将此时间戳转换为秒？Ittry this 但它的 thrw 异常
SimpleDateFormat sdfu = new SimpleDateFormat("yyyy-MM-dd kk:mm");
Date udate = sdfu.parse(dateAndTimeUTC);
long timeInMillisSinceEpoch123 = udate.getTime();
long durationinSeconds2 = timeInMillisSinceEpoch123 / 1000;
System.out.println("Time in Seconds UTC: " + durationinSeconds2);
Is there any better way to convert UTC/GMT time-stamp into seconds?
有没有更好的方法将 UTC/GMT 时间戳转换为秒？
回答by Dat Nguyen
get current seconds system
long timestamp = System.currentTimeMillis() / 1000;
获取当前秒系统
long timestamp = System.currentTimeMillis() / 1000;
回答by Jing DU
I have realised it as below:
我已经意识到它如下：
long currentTS = Long.valueOf(String.valueOf(System.currentTimeMillis()/1000));
long currentTS = Long.valueOf(String.valueOf(System.currentTimeMillis()/1000));
Another way is to truncate last three digits from System.currentTimeMillis():
另一种方法是截断 System.currentTimeMillis() 的最后三位数字：
String currentTSstr = String.valueOf(System.currentTimeMillis());
long currentTS = Long.valueOf(currentTSstr.substring(0, currentTSstr.length()-3));
String currentTSstr = String.valueOf(System.currentTimeMillis());
long currentTS = Long.valueOf(currentTSstr.substring(0, currentTSstr.length()-3));
回答by yuen26
With Java 8+, you can use:
使用 Java 8+，您可以使用：
Instant.now().getEpochSecond()
