使用joda-time封装的日期工具类

public class DateTimeUtil {
public static final String STANDARD_FORMAT = "yyyy-MM-dd HH:mm:ss";

public static Date strToDate(String dateTimeStr, String formatStr){
DateTimeFormatter dateTimeFormatter = DateTimeFormat.forPattern(formatStr);
DateTime dateTime = dateTimeFormatter.parseDateTime(dateTimeStr);
return dateTime.toDate();
}

public static String dateToStr(Date date,String formatStr){
if(date == null){
return StringUtils.EMPTY;
}
DateTime dateTime = new DateTime(date);
return dateTime.toString(formatStr);
}

public static Date strToDate(String dateTimeStr){
DateTimeFormatter dateTimeFormatter = DateTimeFormat.forPattern(STANDARD_FORMAT);
DateTime dateTime = dateTimeFormatter.parseDateTime(dateTimeStr);
return dateTime.toDate();
}

public static String dateToStr(Date date){
if(date == null){
return StringUtils.EMPTY;
}
DateTime dateTime = new DateTime(date);
return dateTime.toString(STANDARD_FORMAT);
}

public static void main(String[] args) {
System.out.println(DateTimeUtil.dateToStr(new Date(),"yyyy-MM-dd HH:mm:ss"));
System.out.println(DateTimeUtil.strToDate("2010-01-01 11:11:11","yyyy-MM-dd HH:mm:ss"));

}

}