import java.text.DecimalFormat;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Locale;
import java.util.Random;
import java.util.StringTokenizer;
import java.util.Vector;
public class DateUtil
{
public static final String DEFAULT_DATE_FORMAT = "MM-dd-yyyy";
public static final String ZH_DATE_FORMAT = "yyyy-MM-dd";
public static final String DEFAULT_TIME_FORMAT = "HH:mm:ss";
public static final String DEFAULT_DATETIME_FORMAT = "MM-dd-yyyy HH:mm:ss";
public static final String ZH_DATETIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
public static final String DEFAULT_PRECISION_DATETIME_FORMAT = "MM-dd-yyyy HH:mm:ss:SSS";
public static final String ZH_PRECISION_DATETIME_FORMAT = "yyyy-MM-dd HH:mm:ss:SSS";
public static final String DEFAULT_PRECISION_MILLTIME_FORMAT = "yyyy:MM:dd HH:mm:ss:SSS";
public static final String DEFAULT_HOUR_DATE_FORMAT = "MM-dd-yyyy HH";
public static final String ZH_HOUR_DATE_FORMAT = "yyyy-MM-dd HH";
public static final String DEFAULT_MINUTE_DATE_FORMAT = "MM-dd-yyyy HH:mm";
public static final String ZH_MINUTE_DATE_FORMAT = "yyyy-MM-dd HH:mm";
public static final String ZH_SECOND_DATE_FORMAT = "yyyyMMddHHmmss";
/**
* 日期时间格式1－"yyyy.MM.dd HH:mm:ss"
*/
public static final String TIMEFORMAT_FULL = "yyyy.MM.dd HH:mm:ss";
/**
* 日期时间格式2－"yyyy.MM.dd HH:mm"
*/
public static final String TIMEFORMAT_NO_SEC = "yyyy.MM.dd HH:mm";
/**
* 日期格式1－"yyyy.MM.dd"
*/
public static final String TIMEFORMAT_NO_TIME = "yyyy.MM.dd";
/**
* 日期格式2－"yyyy.MM"
*/
public static final String TIMEFORMAT_YEAR_MONTH_ONLY = "yyyy.MM";
/**
* 日期格式3－"yyyyMMdd"
*/
public static final String TIMEFORMAT_ANOTHER_DATE = "yyyyMMdd";
/**
* 1024以内的素数表，172个
*/
public static int sNumprime[] = { 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73,
79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191,
193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311,
313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439,
443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, 521, 523, 541, 547, 557, 563, 569, 571, 577,
587, 593, 599, 601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709,
719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829, 839, 853, 857,
859, 863, 877, 881, 883, 887, 907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997, 1009,
1013, 1019, 1021 };
/**
* 构造函数
*/
public DateUtil()
{
}
/**
* 按日期时间格式1返回当前时间 yyyy.MM.dd HH:mm:ss
*
* @return String 获得当前时间
*/
public static String getCurrentDateTime()
{
SimpleDateFormat sdf = new SimpleDateFormat(TIMEFORMAT_FULL);
return sdf.format(new Date());
}
public static String getCurrentDateTime_14()
{
SimpleDateFormat sdf = new SimpleDateFormat(ZH_SECOND_DATE_FORMAT);
return sdf.format(new Date());
}
/**
* 按日期格式1返回当前日期
*
* @return String 获得当前日期
*/
public static String getCurrentDate()
{
SimpleDateFormat sdf = new SimpleDateFormat(TIMEFORMAT_NO_TIME, Locale.US);
return sdf.format(new Date());
}
/**
* 按日期格式3返回数字日期
*
* @return String 获得数字日期
*/
public static String getPiciDate()
{
SimpleDateFormat sdf = new SimpleDateFormat(TIMEFORMAT_ANOTHER_DATE, Locale.US);
return sdf.format(new Date());
}
/**
* 按日期格式3返回数字日期
*
* @param sNowDateTime 设置时间，格式为YYYYMMDDHH24MISS
*/
public static void setCurrentDate(String sNowDateTime)
{
if (sNowDateTime.length() == 14)
{
int iyear;
int imonth;
int idate;
int ihour;
int iminute;
int isecond;
iyear = java.lang.Integer.parseInt(sNowDateTime.substring(0, 4));
if (iyear < 2000)
{
iyear = 2003;
}
imonth = java.lang.Integer.parseInt(sNowDateTime.substring(4, 6));
if (imonth > 12)
{
imonth = 11;
}
idate = java.lang.Integer.parseInt(sNowDateTime.substring(6, 8));
if (idate > 31)
{
idate = 11;
}
ihour = java.lang.Integer.parseInt(sNowDateTime.substring(8, 10));
if (ihour > 23)
{
ihour = 11;
}
iminute = java.lang.Integer.parseInt(sNowDateTime.substring(10, 12));
if (iminute > 59)
{
iminute = 11;
}
isecond = java.lang.Integer.parseInt(sNowDateTime.substring(12, 14));
if (isecond > 59)
{
isecond = 11;
}
Calendar serverNow = Calendar.getInstance();
serverNow.set(iyear, imonth, idate, ihour, iminute, isecond);
}
}
/**
* Function name: sGetAddTimes Description: 给一个时间增加上一定的时间
*
* @param timePoint 计时时间点(格式：TimeFormat1)
* @param addSeconds times to add(单位：秒)
* @return String 返回增加时间后的时间(格式：TimeFormat1)
*/
public static String sGetAddTimes(String timePoint, long addSeconds)
{
if (timePoint.length() == 19)
{
String dRet = "";
SimpleDateFormat sdf = new SimpleDateFormat(TIMEFORMAT_FULL);
Date timePoints = sdf.parse(timePoint, new java.text.ParsePosition(0));
Date dateTimes = new Date((timePoints.getTime() / 1000L + (addSeconds)) * 1000L);
dRet = sdf.format(dateTimes);
return dRet;
}
else
{
return "";
}
}
/**
* Function name: sGetAddTimes Description: 给一个时间减去上一定的时间
*
* @param timePoint 计时时间点(格式：TimeFormat1)
* @param addSeconds times to add(单位：秒)
* @return String 返回减去时间后的时间(格式：TimeFormat1)
*/
public static String sGetMinusTimes(String timePoint, long minusSeconds)
{
if (timePoint.length() == 19)
{
String dRet = "";
SimpleDateFormat sdf = new SimpleDateFormat(TIMEFORMAT_FULL);
Date timePoints = sdf.parse(timePoint, new java.text.ParsePosition(0));
Date dateTimes = new Date((timePoints.getTime() / 1000L - (minusSeconds)) * 1000L);
dRet = sdf.format(dateTimes);
return dRet;
}
else
{
return "";
}
}
/**
* Function name: lTimeCompare Description: 两时间比较. Compare two times
*
* @param compTime1 比较时间1(格式：TimeFormat1)
* @param compTime2 比较时间2(格式：TimeFormat1)
* @return long 返回相差的时间(单位：秒)
*/
public static long lTimeCompare(String compTime1, String compTime2)
{
if ((compTime1.length() == 19) && (compTime2.length() == 19))
{
long iReturn = -1;
SimpleDateFormat sdf = new SimpleDateFormat(TIMEFORMAT_FULL);
Date dateTime1 = sdf.parse(compTime1, new java.text.ParsePosition(0));
Date dateTime2 = sdf.parse(compTime2, new java.text.ParsePosition(0));
iReturn = dateTime2.getTime() / 1000L - dateTime1.getTime() / 1000L;
return iReturn;
}
else
{
return 0;
}
}
/**
* Function name: lTimeCompareNow Description: 与当前时间比较. Compare one time
* with now
*
* @param compTime1 比较时间1(格式：TimeFormat1)
* @return long 返回相差的时间(单位：秒)
*/
public static long lTimeCompareNow(String compTime1)
{
if (compTime1 != null && compTime1.equals("999"))
{
return -1;
}
if (compTime1.length() == 19 || compTime1.length() == 10)
{
long iReturn = -1;
if (compTime1.length() == 10)
{
compTime1 += " 00:00:00";
}
SimpleDateFormat sdf = new SimpleDateFormat(TIMEFORMAT_FULL);
Date dateTime1 = sdf.parse(compTime1, new java.text.ParsePosition(0));
iReturn = java.lang.System.currentTimeMillis() / 1000L - dateTime1.getTime() / 1000L;
return iReturn;
}
else
{
return 0;
}
}
/**
* Function name: fmtDate Description: 日期字符串规范化. format a date string using
* comm
*
* @param sDate 要规范的日期字符串(如2003-11-11、2003/11/11)
* @param comm 日期字符串中间的分隔符
* @return String 返回规范化后的字符串
*/
public static String fmtDate(String sDate, String comm)
{
String dRet = "";
if (sDate.length() == 10)
{
}
else
{
sDate = getCurrentDate();
}
dRet = sDate.substring(0, 4) + comm + sDate.substring(5, 7) + comm + sDate.substring(8, 10);
return dRet;
}
/**
* Function name: fmtDateTime Description: 日期时间字符串规范化. format a date string
* using comm
*
* @param sDate 要规范的日期时间字符串(如2003-11-11 11:11:11、2003/11/11 11:11:11)
* @param comm 日期中间的分隔符
* @return String 返回规范化后的字符串
*/
public static String fmtDateTime(String sDate, String comm)
{
String dRet = "";
if (sDate.length() == 19)
{
}
else
{
sDate = getCurrentDateTime();
}
dRet = sDate.substring(0, 4) + comm + sDate.substring(5, 7) + comm + sDate.substring(8, 10) + " "
+ sDate.substring(11, 13) + ":" + sDate.substring(14, 16) + ":" + sDate.substring(17, 19);
return dRet;
}
/**
* Function Name: SubStr Description: 取指定长度的字符子串，超过取到串尾
*
* @param fullString 源字符串
* @param nStart 开始字节
* @param nLen 要取的长度
* @return String 返回目的字符串
*/
public static String subStr(String fullString, int nStart, int nLen)
{
String sResult = "";
if ((nStart + nLen) > fullString.length())
{
sResult = fullString.substring(nStart);
}
else
{
sResult = fullString.substring(nStart, (nStart + nLen));
}
return sResult;
}
/**
* Function Name: DevideStr Description: 分解字符串
*
* @param fullString 源字符串
* @param sComm 字符串中间的分隔符
* @return Vector 返回分解后的字符串列
*/
public static Vector<String> devideStr(String fullString, String sComm)
{
Vector<String> vTmp = new Vector<String>();
try
{
if (sComm.length() > 1)
{
sComm = sComm.substring(0, 1);
}
StringTokenizer stString = new StringTokenizer(fullString, sComm);
while (stString.hasMoreTokens())
{
vTmp.addElement(stString.nextToken());
}
}
catch (Exception e)
{
vTmp.clear();
}
return vTmp;
}
/**
* Function Name: DivideCSV Description: 分解CSV格式字符串
*
* @param fullString 源字符串
* @param sComm 字符串中间的分隔符
* @return Vector 返回分解后的字符串列
* @see #devideStr(String, String) deprecated 由DevideStr(String,
* String)函数替代，该函数不再使用。
*/
public static Vector<String> divideCSV(String fullString, String sComm)
{
Vector<String> vTmp = new Vector<String>();
if (sComm.length() > 1)
{
sComm = sComm.substring(0, 1);
}
StringTokenizer stString = new StringTokenizer(fullString, sComm);
while (stString.hasMoreTokens())
{
vTmp.addElement(stString.nextToken());
}
return vTmp;
}
/**
* Function Name: GenRandom Description: 随机数产生程序
*
* @param nIn 随机数种子
* @param nLen 随机数长度
* @return String 返回随机数
*/
public static String genRandom(int nIn, int nLen)
{
int nYear;
int nMonth;
int nDay;
int nHour;
int nSec;
int nMsec;
double f1;
double f2;
long temp;
int count;
int loopCount;
int i;
int rest;
String sResult = "";
String sFull = "";
if (nLen > 9)
{
loopCount = nLen / 9;
for (i = 1; i <= loopCount; i++)
{
sResult = sResult + genRandom(i, 9);
}
rest = nLen - loopCount * 9;
if (rest != 0)
{
sResult = sResult + genRandom(1, rest);
}
}
else
{
if (nLen == 0)
{
return "";
}
sFull = "";
for (count = 1; count <= nLen; count++)
{
sFull = sFull + "0";
}
DecimalFormat nf = new DecimalFormat(sFull);
Calendar nowTime = Calendar.getInstance();
nYear = nowTime.get(Calendar.YEAR);
nMonth = nowTime.get(Calendar.MONTH) + 1;
nDay = nowTime.get(Calendar.DAY_OF_MONTH);
nHour = nowTime.get(Calendar.HOUR_OF_DAY);
nSec = nowTime.get(Calendar.SECOND);
nMsec = nowTime.get(Calendar.MILLISECOND);
f2 = Math.sin(Math.sqrt((nIn % 713) + nMsec + nSec * 34 + nHour * 47) + nMsec * nSec * nHour);
f1 = Math.pow((Math.abs(f2 * 89 + 79 * Math.cos(nIn + nMsec * nSec)) * 31), 2);
temp = (long) f1 + nIn + nYear + nMonth * 11 + nDay;
StringBuffer stemp = new StringBuffer((new java.lang.Long(temp)).toString());
stemp = stemp.reverse();
Random rd = new Random();
rd.setSeed(java.lang.Long.parseLong(stemp.toString()) + (nIn % 3));
sResult = nf.format(rd.nextInt((int) (Math.pow(10, nLen) - 1)));
}
return sResult;
}
/**
* Function Name: VarlenRnd Description: 取可变长随机数，长度范围由参数指定
*
* @param minLen 最小长度
* @param maxLen 最大长度
* @return String 返回随机数
*/
public static String varlenRnd(int minLen, int maxLen)
{
String sResult = "";
if (minLen < maxLen)
{
int nLen = java.lang.Integer.parseInt(genRandom(3, 1)) % (maxLen - minLen + 1) + minLen;
sResult = genRandom(3, nLen);
}
else
{
sResult = genRandom(3, maxLen);
}
return sResult;
}
/**
* BCD码左对齐转字符串
*
* @param bcd 你一次读进的字节数，因为可能会大于你要处理的字节数
* @param begin 字节开始位置
* @param length 字节长，与begin一起决定真正要处理的字节数
* @return String 返回对齐后字符串
*/
public static String bcd2Str(byte[] bcd, int begin, int length)
{
String str = "";
int temp;
for (int i = begin; i < begin + length; i++)
{
if (bcd[i] == 0)
{
break;
}
temp = (bcd[i] & 0x0F) % 10;
str += temp;
temp = (bcd[i] >>> 4) % 10;
if (bcd[i] >>> 4 != 0)
{
str += temp;
}
}
return str;
}
/**
* 普通的二进制转字串
*
* @param hex 你一次读进的字节数，因为可能会大于你要处理的字节数
* @param begin 字节开始位置
* @param num 字节长，与begin一起决定真正要处理的字节数
* @return String 返回转换后字符串
*/
public static String hex2Str(byte[] hex, int begin, int num)
{
String overflow = "overflow";
long ll = 0;
if (num > 8)
{
return overflow;
}
for (int i = begin; i < begin + num; i++)
{
ll = ll * 256 + hex[i];
}
return String.valueOf(ll);
}
/**
* 获取日期的年份
*
* @param d 日期
* @return 年份
*/
public static int getYear(Date d)
{
GregorianCalendar cal = new GregorianCalendar();
if (d != null)
{
cal.setTime(d);
return cal.get(Calendar.YEAR);
}
else
{
return 1900;
}
}
/**
* 获取日期的月份
*
* @param d 日期
* @return 月份
*/
public static int getMonth(Date d)
{
GregorianCalendar cal = new GregorianCalendar();
if (d != null)
{
cal.setTime(d);
return cal.get(Calendar.MONTH) + 1;
}
else
{
return 1;
}
}
/**
* 获取日期的天
*
* @param d 日期
* @return 天
*/
public static int getDay(Date d)
{
GregorianCalendar cal = new GregorianCalendar();
if (d != null)
{
cal.setTime(d);
return cal.get(Calendar.DAY_OF_MONTH);
}
else
{
return 1;
}
}
/**
* 获取日期的小时
*
* @param d 日期
* @return 小时
*/
public static int getHour(Date d)
{
GregorianCalendar cal = new GregorianCalendar();
if (d != null)
{
cal.setTime(d);
return cal.get(Calendar.HOUR_OF_DAY);
}
else
{
return 0;
}
}
/**
* 获取日期的分
*
* @param d 日期
* @return 分
*/
public static int getMinute(Date d)
{
GregorianCalendar cal = new GregorianCalendar();
if (d != null)
{
cal.setTime(d);
return cal.get(Calendar.MINUTE);
}
else
{
return 0;
}
}
/**
* 获取日期的秒
*
* @param d 日期
* @return 秒
*/
public static int getSecond(Date d)
{
GregorianCalendar cal = new GregorianCalendar();
if (d != null)
{
cal.setTime(d);
return cal.get(Calendar.SECOND);
}
else
{
return 0;
}
}
/**
* 获取日期的毫秒
*
* @param d 日期
* @return 毫秒
*/
public static int getMilliSecond(Date d)
{
GregorianCalendar cal = new GregorianCalendar();
if (d != null)
{
cal.setTime(d);
return cal.get(Calendar.MILLISECOND);
}
else
{
return 0;
}
}
/**
* 转换日期为MM-dd-yyyy HH:mm:ss格式的字符串
*
* @param d 日期
* @return 字符串
*/
public static String toString(Date d)
{
if (d == null)
{
return null;
}
return toString(d, DEFAULT_DATETIME_FORMAT);
}
/**
* 转换日期为指定格式的字符串
*
* @param date 日期
* @param format 指定格式
* @return 字符串
*/
public static String toString(Date date, String format)
{
if (date == null)
{
return "";
}
if ((format == null) || (format.length() == 0))
{
return "";
}
SimpleDateFormat formatter = new SimpleDateFormat(format);
return formatter.format(date);
}
/**
* 转换日期为指定区域内指定格式的字符串
*
* @param date 日期
* @param format 指定格式
* @param locale 指定区域
* @return 字符串
*/
public static String toString(Date date, String format, Locale locale)
{
if (date == null)
{
return "";
}
if ((format == null) || (format.length() == 0))
{
return "";
}
if (locale == null)
{
return "";
}
SimpleDateFormat formatter = new SimpleDateFormat(format, locale);
return formatter.format(date);
}
/**
* 转换字符串为日期
*
* @param s 字符串
* @return 日期
*/
public static Date toDate(String s)
{
if ((s == null) || (s.length() == 0))
{
return null;
}
return toDate(s, DEFAULT_DATETIME_FORMAT);
}
/**
* 转换字符串为指定格式的日期
*
* @param s 字符串
* @param format 指定格式
* @return 日期
*/
public static Date toDate(String s, String format)
{
if ((s == null) || (s.length() == 0))
{
return null;
}
if ((format == null) || (format.length() == 0))
{
return null;
}
SimpleDateFormat formatter = new SimpleDateFormat(format);
ParsePosition pos = new ParsePosition(0);
Date d = formatter.parse(s, pos);
return d;
}
/**
* 转换字符串为指定区域内指定格式的日期
*
* @param s 字符串
* @param format 指定格式
* @param locale 指定区域
* @return 日期
*/
public static Date toDate(String s, String format, Locale locale)
{
Locale loc;
if ((s == null) || (s.length() == 0))
{
return null;
}
if ((format == null) || (format.length() == 0))
{
return null;
}
if (locale == null)
{
loc = Locale.getDefault();
}
else
{
loc = locale;
}
SimpleDateFormat formatter = new SimpleDateFormat(format, loc);
ParsePosition pos = new ParsePosition(0);
Date d = formatter.parse(s, pos);
return d;
}
/**
* 判断字符串是否为日期
* @param s 字符串
* @return 是否为日期
*/
public static boolean isDate(String s)
{
Date date = toDate(s);
if (date == null)
{
return false;
}
String str = toString(date);
return str.equalsIgnoreCase(s);
}
/**
* 判断字符串是否为指定格式日期
* @param s 字符串
* @param format 指定格式
* @return 是否为日期
*/
public static boolean isDate(String s, String format)
{
Date date = toDate(s, format);
if (date == null)
{
return false;
}
String str = toString(date, format);
return str.equalsIgnoreCase(s);
}
/**
* 判断字符串是否为指定区域内指定格式日期
* @param s 字符串
* @param format 指定格式
* @param locale 指定区域
* @return 是否为日期
*/
public static boolean isDate(String s, String format, Locale locale)
{
Date date = toDate(s, format, locale);
if (date == null)
{
return false;
}
String str = toString(date, format, locale);
return str.equalsIgnoreCase(s);
}
/**
* 比较两日期是否相等
* @param d0 日期0
* @param d1 日期1
* @return 是否相等
*/
public static boolean compare(Date d0, Date d1)
{
if (d0 == null && d1 == null)
{
return true;
}
if (d0 == null || d1 == null)
{
return false;
}
else
{
return d0.getTime() == d1.getTime();
}
}
/**
* 将日期转换为YYYYMMDDHHMISS类型的方法
*
* @param d Date
* @return String
*/
public static String toDate(Date d)
{
return toString(d, ZH_SECOND_DATE_FORMAT);
}
/**
* 将日期类型转换为微秒级别的字符串，格式为yyyy:MM:dd HH:mm:ss:SSS
*
* @param d Date
* @return String
*/
public static String toDateOfMilliSecond(Date d)
{
return toString(d, DEFAULT_PRECISION_MILLTIME_FORMAT);
}
/**
* 返回某日期增减指定月数后的新值
*
* @param oldDate 旧日期，格式：yyyyMMddHHmmss
* @param valve 增减月数
* @return 新日期，格式：yyyyMMddHHmmss
*/
public static String getDateByAddMonth(String oldDate, int valve)
{
Calendar calendar = Calendar.getInstance();
calendar.setTime(toDate(oldDate, ZH_SECOND_DATE_FORMAT));
calendar.add(Calendar.MONTH, valve);
return DateUtil.toDate(calendar.getTime());
}
/**
* 计算增加年份后新的日期的值
*
* @param oldDate 之前的日期，精确到秒级，字符串类型，如20060901235959
* @param valve 阀值
* @return 新日期
*/
public static String getDateByAddYear(String oldDate, int valve)
{
int year = Integer.parseInt(oldDate.substring(0, 4));
String newDate = null;
newDate = String.valueOf(year + valve) + oldDate.substring(4, oldDate.length());
return newDate;
}
/**
* 计算增加日期后新的日期的值。
*
* @param oldDate 之前的日期，精确到秒级，字符串类型，如20060901235959
* @param valve 阀值
* @return 新日期
*/
public static String getDateByAddDay(String oldDate, int valve)
{
Date a = toDate(oldDate, ZH_SECOND_DATE_FORMAT);
long b = a.getTime();
long c = b + valve * 24 * 60 * 60 * 1000;
Date d = new Date(c);
return toDate(d);
}
/**
* 计算增加小时后新的日期的值。
*
* @param oldDate 之前的日期，精确到秒级，字符串类型，如20060901235959
* @param valve 阀值
* @return 新日期
*/
public static String getDateByAddHour(String oldDate, int valve)
{
Date a = toDate(oldDate, ZH_SECOND_DATE_FORMAT);
long b = a.getTime();
long c = b + valve * 60 * 60 * 1000;
Date d = new Date(c);
return toDate(d);
}
/**
* 计算增加分钟后新的日期的值。
*
* @param oldDate 之前的日期，精确到秒级，字符串类型，如20060901235959
* @param valve 阀值
* @return 新日期
*/
public static String getDateByAddMinute(String oldDate, int valve)
{
Date a = toDate(oldDate, ZH_SECOND_DATE_FORMAT);
long b = a.getTime();
long c = b + valve * 60 * 1000;
Date d = new Date(c);
return toDate(d);
}
/**
* 计算增加秒钟后新的日期的值。
*
* @param oldDate 之前的日期，精确到秒级，字符串类型，如20060901235959
* @param valve 阀值
* @return 新日期
*/
public static String getDateByAddSecond(String oldDate, int valve)
{
Date a = toDate(oldDate, ZH_SECOND_DATE_FORMAT);
long b = a.getTime();
long c = b + valve * 1000;
Date d = new Date(c);
return toDate(d);
}
/**
* 取得当前时间 falg=0 格式为：yyyy.MM.dd HH:mm:ss falg=1 格式为：mm
*
* @param flag 标志
* @return 当前时间
*/
public static String getTime(int flag)
{
java.text.SimpleDateFormat formatter = new java.text.SimpleDateFormat("yyyy.MM.dd HH:mm:ss");
String operTime = formatter.format(new java.util.Date());
String sMoth = operTime.substring(5, 7);
if (flag == 0)
{
return operTime;
}
else
{
return sMoth;
}
}
/**
* 判断是否是闰年
* @param year 年份
* @return 是否是闰年
*/
public static boolean isLeapYear(int year)
{
if (year < 0)
{
return false;
}
if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
{
return true;
}
else
{
return false;
}
}
/**
* 把传进来的 日期+时间 格式填充。把时间的 时、分、秒的数字填充为2位。不足2位的前面补0
*
* @param datetime 日期
* @return 补充后的日期
*/
public static String fillDateTime(String datetime)
{
if (datetime == null || datetime.trim().length() == 0)
{
return "";
}
String[] ary = datetime.split(" ");
if (ary == null || ary.length != 2)
{ //这里对日期时间不做合法性检查。设定该日期时间都是合法的。
//简单的检查下，如果格式不合法，直接返回空字符串
return "";
}
//这里暂时对日期格式不做转换，只对时间格式做转换
String time = fillTime(ary[1]);
if (time.trim().length() == 0)
{//如果时间格式转换错误，则返回空字符串
return "";
}
String date = fillDate(ary[0].replaceAll("\\.", "-"));
if (date.trim().length() == 0)
{
return "";
}
return date + " " + time;
}
/**
* 填充日期
* @param date 日期
* @return 日期
*/
public static String fillDate(String date)
{
if (date == null || date.length() == 0)
{
return "";
}//2009-9-9
String[] ary = date.split("-");
if (ary.length != 3 || ary[1] == null || ary[1].trim().length() == 0 || ary[2] == null
|| ary[2].trim().length() == 0 || (ary[1].trim().length() != 1 && ary[1].trim().length() != 2)
|| (ary[2].trim().length() != 1 && ary[2].trim().length() != 2))
{
return "";
}
if (ary[1].length() == 1)
{
ary[1] = "0" + ary[1];
}
if (ary[2].length() == 1)
{
ary[2] = "0" + ary[2];
}
return ary[0] + "-" + ary[1] + "-" + ary[2];
}
/**
* 填充时间格式. 把时间的 时、分、秒的数字填充为2位。不足2位的前面补0 转换后的格式为: HH:mm:ss
*
* @param time 日期
* @return 日期
*/
public static String fillTime(String time)
{
//这里对时间的合法性不做检查
if (time == null)
{
return "";
}
time = time.trim();
if (time.equals(""))
{
return "";
}
String[] timesplit = time.split(":", 3);
if (timesplit.length != 3)
{
return "";
}
if (timesplit[0] == null || timesplit[1] == null || timesplit[2] == null)
{
return "";
}
String shour = timesplit[0].trim();
String sminute = timesplit[1].trim();
String ssecond = timesplit[2].trim();
if (shour.equals("") || sminute.equals("") || ssecond.equals(""))
{
return "";
}
if (shour.length() == 1)
{
shour = "0" + shour;
}
if (sminute.length() == 1)
{
sminute = "0" + sminute;
}
if (ssecond.length() == 1)
{
ssecond = "0" + ssecond;
}
return shour + ":" + sminute + ":" + ssecond;
}
/**
* 检测输入字符串是否是时间格式 HH:mm:dd
*
* @param s 日期
* @return 是否是时间格式
*/
public static boolean checkTimeFormat(String s)
{
if (s == null)
{
return false;
}
s = s.trim();
if (s.equals(""))
{
return false;
}
String[] timesplit = s.split(":", 3);
if (timesplit.length != 3)
{
return false;
}
if (timesplit[0] == null || timesplit[1] == null || timesplit[2] == null)
{
return false;
}
String shour = timesplit[0].trim();
String sminute = timesplit[1].trim();
String ssecond = timesplit[2].trim();
if (shour.equals("") || sminute.equals("") || ssecond.equals(""))
{
return false;
}
try
{
int ihour = Integer.parseInt(shour);
if (shour.trim().length() != 2 && shour.trim().length() != 1)
{
return false;
}
if (ihour > 23 || ihour < 0)
{
return false;
}
if (sminute.trim().length() != 2 && sminute.trim().length() != 1)
{
return false;
}
int iminute = Integer.parseInt(sminute);
if (iminute < 0 || iminute > 59)
{
return false;
}
if (ssecond.trim().length() != 2 && ssecond.trim().length() != 1)
{
return false;
}
int isecond = Integer.parseInt(ssecond);
if (isecond < 0 || isecond > 59)
{
return false;
}
}
catch (Exception e)
{
return false;
}
return true;
}
/**
* 检测输入字符串是否是 日期+时间 格式，包括闰年检测
* @param s 日期
* @return 是否是日期+时间 格式
*/
public boolean checkDateTimeFormat(String s)
{
if (s == null)
{
return false;
}
s = s.trim();
if (s.equals(""))
{
return false;
}
String[] dtparts = s.split(" ", 2);
if (dtparts.length != 2)
{
return false;
}
String dateparts = dtparts[0];
String timeparts = dtparts[1];
return checkDateFormat(dateparts) && checkTimeFormat(timeparts);
}
/**
* 检测输入字符串是否是日期格式yyyy-MM-dd，包括闰年检测
* @param s 日期
* @return 是否是日期格式yyyy-MM-dd
*/
public static boolean checkDateFormat(String s)
{
if (s == null)
{
return false;
}
s = s.trim();
if (s.equals(""))
{
return false;
}
String[] dts = s.split("-");
if (dts.length != 3)
{
return false;
}
if (dts[0].length() != 4)
{
return false;
}
if ((dts[1].length() != 1 && dts[1].length() != 2))
{
return false;
}
if (dts[2].length() != 1 && dts[2].length() != 2)
{
return false;
}
int year = 0;
int month = 0;
int day = 0;
int days = 0;
try
{
year = Integer.valueOf(dts[0]);
if (year > 10000 || year < 1)
{
return false;
}
}
catch (Exception e)
{
return false;
}
try
{
month = Integer.valueOf(dts[1]);
if (month < 1 || month > 12)
{
return false;
}
}
catch (Exception e)
{
return false;
}
try
{
day = Integer.valueOf(dts[2]);
switch (month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
days = 31;
break;
case 4:
case 6:
case 9:
case 11:
days = 30;
break;
case 2:
if (isLeapYear(year))
{
days = 29;
}
else
{
days = 28;
}
default:
}
if (day > days || day < 1)
{
return false;
}
}
catch (Exception e)
{
return false;
}
return true;
}
/**
* 把字符串转换成 日期
* @param strdate 字符串日期
* @return 日期
*/
public Date stringParsetoDate(String strdate)
{
if (strdate == null || strdate.trim().equals(""))
{
return null;
}
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
try
{
return sdf.parse(strdate);
}
catch (Exception e)
{
return null;
}
}
/**
* 把字符串转换成 日期时间
* @param str 字符串日期
* @return 日期
*/
public Date strToDateTime(String str)
{
if (str == null || str.trim().equals(""))
{
return null;
}
java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
try
{
return sdf.parse(str);
}
catch (Exception e)
{
return null;
}
}
/**
* 从字符串中得到月份
* @param datestr 字符串日期
* @return 月份
*/
public int getMonthfromStr(String datestr)
{
int month = 0;
if (datestr == null || datestr.trim().equals(""))
{
return month;
}
String[] splitedate = datestr.split("-");
try
{
month = Integer.parseInt(splitedate[1].trim());
if (month < 1 || month > 12)
{
return 0;
}
}
catch (Exception e)
{
e.printStackTrace();
return 0;
}
return month;
}
/**
* 把给定日期减去N个月，返回一个Date
* @param date 给定日期
* @param nMonth 月数
* @return Date
* @throws Exception 抛出的异常
*/
public Date minusMonth(Calendar date, int nMonth) throws Exception
{
date.add(Calendar.MONTH, -nMonth);
SimpleDateFormat spdf = new SimpleDateFormat("yyyy-MM-dd");
return spdf.parse(spdf.format(date.getTime()));
}
}
时间： 2024-10-02 07:56:54