CloudStack中云主机的UTC时间转为本地时间

CloudStack项目中使用的时间是UTC时间,具体什么是UTC时间大家可以百度,但是我们需要的时间是正常的时间,所以在国泰君安开发测试云中,同步资源管理中虚拟机的同步管理,需要对虚拟机的时间格式化进行转换。工具类如下,关键是时间格式的问题,时间格式为yyyy-MM-dd'T'HH:mm:ss+SSSS。

   public static Date utc2LocalDate(String utcTime) {
        String utcTimePatten = "yyyy-MM-dd'T'HH:mm:ss+SSSS";
        SimpleDateFormat sdf = new SimpleDateFormat(utcTimePatten);
        Date dt = null;
        try {
            dt = sdf.parse(utcTime);
        }
        catch (ParseException e) {
            e.printStackTrace();
        }

        return dt;
    }

测试类:

public class TestUtcTime {

    /**
     *  
     * @param args
     * @return void
     */

    public static void main(String[] args) {
        String ts = "2015-04-22T15:58:54+0800";
        Date date = new Date();
        System.out.println(date);
        System.out.println(DateUtil.utc2LocalDate(ts));

    }

}

另外的方法如下:

public class TestUtc {
    public static void main(String args[]) {
        try {
            String ts = "2015-04-22T15:58:54+0800";
            System.out.println("ts = " + ts);
            ts = ts.replace("Z", " UTC");
            System.out.println("ts = " + ts);
            SimpleDateFormat sdf = new SimpleDateFormat(
                    "yyyy-MM-dd'T'HH:mm:ss+SSSS");

            Date dt = sdf.parse(ts);

            TimeZone tz = sdf.getTimeZone();
            Calendar c = sdf.getCalendar();
            System.out.println("Display name: " + tz.getDisplayName());
            System.out.println(getString(c));
        }
        catch (ParseException pe) {
            System.out.println("Error offset: " + pe.getErrorOffset());
            pe.printStackTrace();
        }
    }

    private static String getString(Calendar c) {
        StringBuffer result = new StringBuffer();
        result.append(c.get(Calendar.YEAR));
        result.append("-");
        result.append((c.get(Calendar.MONTH) + 1));
        result.append("-");
        result.append(c.get(Calendar.DAY_OF_MONTH));
        result.append(" ");
        result.append(c.get(Calendar.HOUR_OF_DAY));
        result.append(":");
        result.append(c.get(Calendar.MINUTE));
        result.append(":");
        result.append(c.get(Calendar.SECOND));
        return result.toString();
    }

}

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posted on 2015-04-30 09:48  Software_King  阅读(139)  评论(0编辑  收藏

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