在Java中以JSON格式下载消息后，从Facebook数据转换时间戳记 [英] Converting the timestamp from Facebook data after downloading messages in JSON format in Java

问题描述

我找不到这个问题的答案，因此，一旦找到答案，我觉得发布答案可能会帮助其他人.

I was unable to find an answer to this problem, so once I figured it out, I felt posting the answer might help other people down the road.

问题是当您从Facebook下载消息并以JSON格式下载消息时，时间码需要转换为可在Java程序中使用的格式.

The issue is when you have downloaded your messages from Facebook and you download them in JSON format, the timecode needs to be converted to a format that can be used in your Java program.

Facebook的时间码是一个13位数字，看起来像这样:1548410106047

The timecode from Facebook is a 13 digit number that looks something like this: 1548410106047

推荐答案

该问题的解决方案是:

您必须首先将其转换为Long数据类型，然后像这样简单地制作一个时间戳:

You must first convert it to a Long datatype, then simply make a Timestamp out of it like this:

Long fbt = Long.parseLong(facebookTime);
Timestamp ts = new Timestamp(fbt);

一旦添加了时间戳，您就可以使用它进行任何操作，例如:

Once you have it in a timestamp you can do anything with it such as:

SimpleDateFormat sdf = new SimpleDateFormat("EEEE, MMMM dd, YYYY hh:mm a");
System.out.println(sdf.format(ts));

上面的输出看起来像这样:

The output from above looks like this:

2019年1月25日星期五上午01:55

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