/**
* 按照默认formatStr的格式，转化dateTimeStr为Date类型 dateTimeStr必须是formatStr的形式
*
* @param dateTimeStr
* @param formatStr
* @return
*/
public static Date getDate(String dateTimeStr, String formatStr) {
try {
if (dateTimeStr == null || "".equals(dateTimeStr)) {
return null;
}
DateFormat sdf = DateUtil.getDateFormat(formatStr);
return sdf.parse(dateTimeStr);
} catch (ParseException e) {
throw new MyException(e);
}
}
/**
* 将YYYYMMDD转换成Date日期
*
* @param date
* @return
* @throws BusinessException
*/
public static Date transferDate(String date) {
if (StringUtils.isEmpty(date) || date.length() != 8) {
throw new RuntimeException("日期格式错误");
}
String con = "-";
String yyyy = date.substring(0, 4);
String mm = date.substring(4, 6);
String dd = date.substring(6, 8);
int month = Integer.parseInt(mm);
int day = Integer.parseInt(dd);
if (month < 1 || month > 12 || day < 1 || day > 31) {
throw new RuntimeException("日期格式错误");
}
String str = yyyy + con + mm + con + dd;
return DateUtil.getDate(str, DateUtil.YYYY_MM_DD_EN);
}
/**
* 获取指定日期mins分钟后的一个(formatStr)的字符串
*
* @param date
* @param mins
* @param formatStr
* @return
*/
public static String getDateOfMin(String date, int mins, String formatStr) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(DateUtil.getDate(date, formatStr));
now.add(Calendar.SECOND, mins * 60);
return dateToDateString(now.getTime(), formatStr);
}
/**
* 获取指定日期day天后的一个(formatStr)的字符串
*
* @param date
* @param mins
* @param formatStr
* @return
*/
public static String getDateOfDay(String date, int day, String formatStr) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(DateUtil.getDate(date, formatStr));
now.add(Calendar.DATE, day);
return dateToDateString(now.getTime(), formatStr);
}
/**
* 获取指定日期mon月后的一个(formatStr)的字符串
*
* @param date
* @param mins
* @param formatStr
* @return
*/
public static String getDateOfMon(String date, int mon, String formatStr) {
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(DateUtil.getDate(date, formatStr));
now.add(Calendar.MONTH, mon);
return dateToDateString(now.getTime(), formatStr);
}