日期与字符串之间转换工具

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class DateUtil {
// private static Log log = LogFactory.getLog(DateUtil.class);

public static final String maskA = "yyyy年MM月dd日 HH:mm";
public static final String maskB = "yyyy-MM-dd HH:mm";
public static final String maskC = "yyyy-MM-dd HH:mm:ss";
public static final String maskD = "chinese";
public static final String maskE = "yyyyMMdd";
public static final String maskF = "long10";
public static final String maskG = "long13";
public static final String maskH = "HH:mm";
public static final String maskI = "MM-dd";
public static final String maskK = "yyyyMMdd HH:mm:ss";
public static final String maskL = "yyyy-MM-dd";
public static final String maskYmdhms = "yyyyMMddHHmmss";
public static final String maskM ="MM月dd日HH:mm";
public static final String maskN ="yyyy年MM月dd日HH:mm:ss";
public static final String maskO ="yyyy年MM月dd日 HHmm";
/**
* @throws ParseException
*             将指定格式的字符串转换为Date
* @Title toMaskDate
* @Description TODO
* @para @param dateStr
* @para @param mask
* @para @return
* @retur Date
* @throws
*/
public static Date toMaskDate(String dateStr, String mask)
throws ParseException {
SimpleDateFormat format = new SimpleDateFormat(mask);
return format.parse(dateStr);
}

/**
* @throws ParseException
* 如果mask为Chinese
*
* @Title: toMaskDateChinese
* @Description: TODO
* @param @param dateStr
* @param @return
* @return Date
* @throws
*/
public static Date toMaskDateChinese(String dateStr) throws ParseException {
Date current = new Date();
// 5分钟前
String regexMinutesPre = "(\\d+)\\s*分钟前\\s*";
// 5小时前
String regexHourPre = "(\\d+)\\s*小时前\\s*";
// 5天前
String regexDayPre = "(\\d+)\\s*天前\\s*";
// 刚刚
String regexNowPre = "\\s*刚刚\\s*";
//今天16:06
String todayTimePre = "\\s*今天\\s*(\\d{2}:\\d{2})\\s*";
if (StringUtil.isEmpty(dateStr)) {
return null;
}

int preInt = 0;
if (dateStr.matches(regexMinutesPre)) {
preInt = Integer.valueOf(StringUtil.getRegexStr(dateStr,
regexMinutesPre));
return addMinute(current, preInt * (-1));
} else if (dateStr.matches(regexHourPre)) {
preInt = Integer.valueOf(StringUtil.getRegexStr(dateStr,
regexHourPre));
return addHour(current, preInt * (-1));
} else if (dateStr.matches(regexDayPre)) {
preInt = Integer.valueOf(StringUtil.getRegexStr(dateStr,
regexDayPre));
return addDate(current, preInt * (-1));
} else if (dateStr.matches(regexNowPre)) {
return new Date();
}else if (dateStr.matches(todayTimePre)) {
String srcDate = StringUtil.getRegexStr(dateStr, todayTimePre);
srcDate = toDefineString(new Date(), maskL)+" "+srcDate+":00";
return DateUtil.toMaskDate(srcDate, maskC);
} else {
return null;
}

}

/**
* 将日期型的日期转为换yyyymmddhhmmss
*
* @Title: toYmdhmsString
* @Description: TODO
* @param @param date
* @param @return
* @return String
* @throws
*/
public static String toYmdhmsString(Date date) {
SimpleDateFormat format = new SimpleDateFormat(maskYmdhms);
return format.format(date);
}

/**
* 将日期型的日期转为换yyyymmddhhmmss
*
* @Title: toYmdhmsString
* @Description: TODO
* @param @param date
* @param @return
* @return String
* @throws
*/
public static String toDefineString(Date date, String mask) {
if (date == null) {
return null;
}
SimpleDateFormat format = new SimpleDateFormat(mask);
return format.format(date);
}

/**
* 将日期转换为年月日
*
* @Title: toymd000Date
* @Description: TODO
* @param @param date
* @param @return
* @return Date
* @throws
*/
public static Date toymd000Date(Date date) {
Calendar cl = Calendar.getInstance();
cl.setTime(date);
cl.set(Calendar.HOUR_OF_DAY, 0);
cl.set(Calendar.MINUTE, 0);
cl.set(Calendar.SECOND, 0);
cl.set(Calendar.MILLISECOND, 0);
return cl.getTime();
}

/**
* 支持多个mask
*
* @Title: toDefineMaskDate
* @Description: TODO
* @param @param dateStr
* @param @param mask
* @param @return
* @param @throws ParseException
* @return Date
* @throws
*/
public static Date toDefineMoreMaskDate(String dateStr, String moreMask)
throws ParseException {
if (StringUtil.isEmpty(dateStr) || StringUtil.isEmpty(moreMask)) {
return null;
}
dateStr = dateStr.replaceAll("：", ":");
String[] masks = moreMask.split("\\|");
Date date = null;
for (String mask : masks) {
try {
date = toDefineMaskDate(dateStr, mask.trim());
} catch (Exception e) {
date = null;
}
if(date != null){
return date;
}
}

return date;
}

/**
* @throws ParseException
*             自定义时间mask的解析
*
* @Title: toDefineMaskDate
* @Description: TODO
* @param @param dateStr
* @param @param mask
* @param @return
* @return Date
* @throws
*/
public static Date toDefineMaskDate(String dateStr, String mask)
throws ParseException {
if (StringUtil.isEmpty(dateStr) || StringUtil.isEmpty(mask)) {
return null;
}

if (maskA.equals(mask) || maskB.equals(mask)) {
mask = mask + ":ss";
dateStr = dateStr + ":00";
} else if (maskF.equals(mask)) {
// 10位的log
return new Date(Long.valueOf(dateStr) * 1000L);
} else if (maskG.equals(mask)) {
// 13位的log
return new Date(Long.valueOf(dateStr));
} else if (maskD.equals(mask)) {
Date d = toMaskDateChinese(dateStr);
return d;
} else if(maskH.equals(mask)){
dateStr = DateUtil.toDefineString(new Date(), maskE)  + " " + dateStr +":00";
Date d = toMaskDate(dateStr, maskK);
return d;
} else if(maskI.equals(mask)){
dateStr = DateUtil.toDefineString(new Date(), "yyyy")  + "-" + dateStr;
Date d = toMaskDate(dateStr, maskL);
return d;
}else if(maskM.equals(mask)){
dateStr = DateUtil.toDefineString(new Date(), "yyyy")  + "年" + dateStr+":00";
Date d = toMaskDate(dateStr, maskN);
return d;
}else if (maskO.equals(mask)) {
dateStr = dateStr.substring(0, dateStr.length()-2)+":"+dateStr.substring(dateStr.length()-2)+":00";
Date d = toMaskDate(dateStr, maskN);
return d;
}

return toMaskDate(dateStr, mask);

}

/**
* 指定日期增加天数
*
* @Title: addDate
* @Description: TODO
* @param @return
* @return Date
* @throws
*/
public static Date addDate(Date date, int dayCount) {

Calendar ca = Calendar.getInstance();
ca.setTime(date);
ca.set(Calendar.DAY_OF_MONTH, ca.get(Calendar.DAY_OF_MONTH) + dayCount);
return ca.getTime();

}

public static void main(String[] args) throws ParseException {
// String mask = "yyyy年MM月dd日hh:mm:ss";
String dateStr = "2015年8月16日 1439";
dateStr = dateStr.substring(0, dateStr.length()-2)+":"+dateStr.substring(dateStr.length()-2)+":00";
System.out.println(toDefineMaskDate(dateStr, "yyyy年MM月dd日 HH:mm:ss"));
}

/**
* 指定日期增加小时数
*
* @Title: addDate
* @Description: TODO
* @param @return
* @return Date
* @throws
*/
public static Date addHour(Date date, int hour) {

Calendar ca = Calendar.getInstance();
ca.setTime(date);
ca.set(Calendar.HOUR_OF_DAY, ca.get(Calendar.HOUR_OF_DAY) + hour);
return ca.getTime();

}

/**
* 指定日期增加分钟数
*
* @Title: addMinute
* @Description: TODO
* @param @return
* @return Date
* @throws
*/
public static Date addMinute(Date date, int minute) {

Calendar ca = Calendar.getInstance();
ca.setTime(date);
ca.set(Calendar.MINUTE, ca.get(Calendar.MINUTE) + minute);
return ca.getTime();

}

/**
* 根据秒获取时间间隔
*
* @Title: getTimeInterval
* @Description: TODO
* @param @param time
* @param @return
* @return String
* @throws
*/
public static String getTimeInterval(int time) {
String r;
if (time <= 60) {
r = time + "秒";
} else if (time > 60 && time < 3600) {
r = time / 60 + "分";
if (time % 60 != 0) {
r = r + time % 60 + "秒";
}
} else {
r = time / 3600 + "小时";

time = time - time / 3600 * 3600;

r = r + time / 60 + "分";

if (time % 60 != 0) {
r = r + time % 60 + "秒";
}
}

return r;
}

}