Java獲取UTC時間

工具：joda-time

Mvn:

<!-- https://mvnrepository.com/artifact/joda-time/joda-time -->
<dependency>
    <groupId>joda-time</groupId>
    <artifactId>joda-time</artifactId>
    <version>2.10.5</version>
</dependency>

使用：

private static final String UTC_FORMATTER_PATTERN = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'";

DateTimeFormatter fmt = DateTimeFormat.forPattern(UTC_FORMATTER_PATTERN);
DateTime now = DateTime.now(DateTimeZone.UTC);
String nowStr = fmt.print(now);

比java.util.Calendar簡單，例如《Java獲得UTC時間》。