我的客户告诉我他会给我时区偏移和日期。我需要相应地在GMT中转换日期。
我不确定我是否正确。我认为胶印意味着从格林尼治标准时间上下起几个小时,并且在获得转换后的日期时间差异。
请在下面查看我想要达到客户期望的内容。
TimeZone timezone = TimeZone.getTimeZone("GMT");
timezone.setRawOffset(28800000);
如果上面的代码行是正确的,那么获取转换日期的代码是什么?请建议......
此致
答案 0 :(得分:0)
您需要使用Calender类
public static Calendar convertToGmt(Calendar cal) {
Date date = cal.getTime();
TimeZone tz = cal.getTimeZone();
log.debug("input calendar has date [" + date + "]");
//Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT
long msFromEpochGmt = date.getTime();
//gives you the current offset in ms from GMT at the current date
int offsetFromUTC = tz.getOffset(msFromEpochGmt);
log.debug("offset is " + offsetFromUTC);
//create a new calendar in GMT timezone, set to this date and add the offset
Calendar gmtCal = Calendar.getInstance(TimeZone.getTimeZone("GMT"));
gmtCal.setTime(date);
gmtCal.add(Calendar.MILLISECOND, offsetFromUTC);
log.debug("Created GMT cal with date [" + gmtCal.getTime() + "]");
return gmtCal;
}
取自here