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JDK1.5ÖУ¬StringÀàÐÂÔöÁËÒ»¸öºÜÓÐÓõľ²Ì¬·½·¨String.format():ÏÖÓÐÒ»¸öʱ¼ä'20090903'Ҫת»¯³ÉÖ¸¶¨Ê±¼äµÄjava.util.Date¸ñʽ
private Date getStartGregorianTime(String date) {
Date d_date = DateUtil.parseDate(date);
int year = new Integer(String.format("%tY", d_date));
int month = new Integer(String.format("%tm", d_date));
int day = new Integer(String.format("%td", d_date));

return new GregorianCalendar(year, month-1, day, 0, 0, 0).getTime();
}

private Date getEndGregorianTime(String date) {
Date d_date = DateUtil.parseDate(date);
int year = new Integer(String.format("%tY", d_date));
int month = new Integer(String.format("%tm", d_date));
int day = new Integer(String.format("%td", d_date));

return new GregorianCalendar(year, month-1, day, 23, 59, 59).getTime();
}

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