Joda-DateTime Date 与 String 相互转换

【参考文章】：Joda-Time 的 DateTimeFormat 问题

public class DateFormatUtils {

    /** HH 必须大写 */
    public static final String FORMAT_FULL_TIME_NO_ZONE = "yyyy-MM-dd HH:mm:ss";

    public static Date toFormatDate(String dateTimeStr) {
        DateTimeFormatter dateTimeFormatter = DateTimeFormat.forPattern(FORMAT_FULL_TIME_NO_ZONE);
        DateTime dateTime = dateTimeFormatter.parseDateTime(dateTimeStr);
        return dateTime.toDate();
    }
    public static String toFormatString(Date date) {
        return new DateTime(date).toString(FORMAT_FULL_TIME_NO_ZONE);
    }

    public static String toFormatString(Date date, String pattern) {
        return new DateTime(date).toString(pattern);
    }
}