如何在Java中将日期和时间组合转换为天

Question

I have Date and Time combination as 2012-02-28T13:10:50Z which I got from the WebService.

I need to convert that String into number of Days.

Answer 1

您可以使用SimpleDateFormat解析时间戳，并通过除以24*60*60*1000L >自1970年1月1日以来的天数，将毫秒数Date.getTime（）转换为天。

Answer 2

You may find this helpful, this is specific to the XML Schema date/time:

DatatypeFactory.newXMLGregorianCalendar

Follow the link on that page to the class XMLGregorianCalendar for details on how to extract all components.

Answer 3

To parse the date, use

import java.text.SimpleDateFormat;

SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd'T'HH:mm:ss'Z'");

I'm not sure about the trailing Z.

date = sdf.parse (d);
// java.util.Date = Tue Feb 28 13:10:50 CET 2012