Java通用工具类（二）-----日期处理
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日期处理
/**
* 中文格式日期
* @param d 日期
* @return
*/
public static String getChineseDate(Date d)
{
if (d == null)
{
return null;
}
SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd",
new DateFormatSymbols());
String dtrDate = df.format(d);
return dtrDate.substring(0, 4) + "/u5E74"
+ Integer.parseInt(dtrDate.substring(4, 6)) + "/u6708"
+ Integer.parseInt(dtrDate.substring(6, 8)) + "/u65E5";
}
/**
* 当前日期
* @return
*/
public static String getCurrentDate_String()
{
Calendar cal = Calendar.getInstance();
String currentDate = null;
String currentYear = (new Integer(cal.get(1))).toString();
String currentMonth = null;
String currentDay = null;
if (cal.get(2) < 9)
currentMonth = "0" + (new Integer(cal.get(2) + 1)).toString();
else
currentMonth = (new Integer(cal.get(2) + 1)).toString();
if (cal.get(5) < 10)
currentDay = "0" + (new Integer(cal.get(5))).toString();
else
currentDay = (new Integer(cal.get(5))).toString();
currentDate = currentYear + currentMonth + currentDay;
return currentDate;
}
/**
* 取当前日期
* @param strFormat 日期格式
* @return
*/
public static String getCurrentDate_String(String strFormat)
{
Calendar cal = Calendar.getInstance();
Date d = cal.getTime();
return getDate(d, strFormat);
}
/**
* 返回两个年月之间间隔的月数
* @param dealMonth
* @param alterMonth
* @return
* @pre alterMonth != null
* @pre dealMonth != null
*/
public static int calBetweenTwoMonth(String dealMonth, String alterMonth)
{
int length = 0;
if (dealMonth.length() != 6 || alterMonth.length() != 6)
{
// Helper.println("/u6BD4/u8F83/u5E74/u6708/u5B57/u7B26/u4E32/u7684/u957F/u5EA6/u4E0D/u6B63/u786E");
length = -1;
} else
{
int dealInt = Integer.parseInt(dealMonth);
int alterInt = Integer.parseInt(alterMonth);
if (dealInt < alterInt)
{
// Helper.println("/u7B2C/u4E00/u4E2A/u5E74/u6708/u53D8/u91CF/u5E94/u5927/u4E8E/u6216/u7B49/u4E8E/u7B2C/u4E8C/u4E2A/u5E74/u6708/u53D8/u91CF");
length = -2;
} else
{
int dealYearInt = Integer.parseInt(dealMonth.substring(0, 4));
int dealMonthInt = Integer.parseInt(dealMonth.substring(4, 6));
int alterYearInt = Integer.parseInt(alterMonth.substring(0, 4));
int alterMonthInt = Integer
.parseInt(alterMonth.substring(4, 6));
length = (dealYearInt - alterYearInt) * 12
+ (dealMonthInt - alterMonthInt);
}
}
return length;
}
/**
* 返回年
* @param date
* @return
* @pre date != null
*/
public static int convertDateToYear(Date date)
{
SimpleDateFormat df = new SimpleDateFormat("yyyy",
new DateFormatSymbols());
return Integer.parseInt(df.format(date));
}
/**
* 返回年月
* @param d
* @return
* @pre d != null
*/
public static String convertDateToYearMonth(Date d)
{
SimpleDateFormat df = new SimpleDateFormat("yyyyMM",
new DateFormatSymbols());
return df.format(d);
}
/**
* 返回年月日
* @param d
* @return
* @pre d != null
*/
public static String convertDateToYearMonthDay(Date d)
{
SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd",
new DateFormatSymbols());
return df.format(d);
}
/**
* 计算日期间隔的天数
* @param beginDate 开始日期
* @param endDate 结束日期
* @return
* @pre beginDate != null
*/
public static int daysBetweenDates(Date beginDate, Date endDate)
{
int days = 0;
Calendar calo = Calendar.getInstance();
Calendar caln = Calendar.getInstance();
calo.setTime(beginDate);
caln.setTime(endDate);
int oday = calo.get(6);
int nyear = caln.get(1);
for (int oyear = calo.get(1); nyear > oyear;)
{
calo.set(2, 11);
calo.set(5, 31);
days += calo.get(6);
oyear++;
calo.set(1, oyear);
}
int nday = caln.get(6);
days = (days + nday) - oday;
return days;
}
/**
* 计算间隔天数后的日期
* @param date
* @param intBetween
* @return
* @pre date != null
*/
public static Date getDateBetween(Date date, int intBetween)
{
Calendar calo = Calendar.getInstance();
calo.setTime(date);
calo.add(Calendar.DATE, intBetween);
return calo.getTime();
}
/**
* 计算指定天数后的日期
* @param date
* @param intBetween
* @param strFromat 日期格式
* @return
*/
public static String getDateBetween_String(Date date, int intBetween,
String strFromat)
{
Date dateOld = getDateBetween(date, intBetween);
return getDate(dateOld, strFromat);
}
/**
* 年月值增1
* @param yearMonth
* @return
* @pre yearMonth != null
* @throws java.lang.StringIndexOutOfBoundsException
*/
public static String increaseYearMonth(String yearMonth)
{
int year = (new Integer(yearMonth.substring(0, 4))).intValue();
int month = (new Integer(yearMonth.substring(4, 6))).intValue();
if (++month <= 12 && month >= 10)
return yearMonth.substring(0, 4) + (new Integer(month)).toString();
if (month < 10)
return yearMonth.substring(0, 4) + "0"
+ (new Integer(month)).toString();
return (new Integer(year + 1)).toString() + "0"
+ (new Integer(month - 12)).toString();
}
/**
* 年月值增加指定的值
* @param yearMonth 初始年月
* @param addMonth 指定的值
* @return
* @pre yearMonth != null
* @throws java.lang.StringIndexOutOfBoundsException
*/
public static String increaseYearMonth(String yearMonth, int addMonth)
{
int year = (new Integer(yearMonth.substring(0, 4))).intValue();
int month = (new Integer(yearMonth.substring(4, 6))).intValue();
month += addMonth;
year += month / 12;
month %= 12;
if (month <= 12 && month >= 10)
return year + (new Integer(month)).toString();
return year + "0" + (new Integer(month)).toString();
}
/**
* 年月值减1
* @param yearMonth
* @return
* @pre yearMonth != null
* @throws java.lang.StringIndexOutOfBoundsException
*/
public static String descreaseYearMonth(String yearMonth)
{
int year = (new Integer(yearMonth.substring(0, 4))).intValue();
int month = (new Integer(yearMonth.substring(4, 6))).intValue();
if (--month >= 10)
return yearMonth.substring(0, 4) + (new Integer(month)).toString();
if (month > 0 && month < 10)
return yearMonth.substring(0, 4) + "0"
+ (new Integer(month)).toString();
return (new Integer(year - 1)).toString()
+ (new Integer(month + 12)).toString();
}
/**
* 年月值增1
* @param yearMonth
* @return
*/
public static String addYearMonth(String yearMonth)
{
int year = (new Integer(yearMonth.substring(0, 4))).intValue();
int month = (new Integer(yearMonth.substring(4, 6))).intValue();
if (++month >= 10 && month < 12)
return yearMonth.substring(0, 4) + (new Integer(month)).toString();
if (month > 0 && month < 10)
return yearMonth.substring(0, 4) + "0"
+ (new Integer(month)).toString();
return (new Integer(year + 1)).toString() + "0"
+ (new Integer(month - 12)).toString();
}
/**
* 转化成中文格式日期
* @param d
* @return
*/
public static String getChineseDate_Date(Date d)
{
if (d == null)
{
return null;
}
SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd",
new DateFormatSymbols());
String dtrDate = df.format(d);
return dtrDate.substring(0, 4) + "/u5E74"
+ Integer.parseInt(dtrDate.substring(4, 6)) + "/u6708"
+ Integer.parseInt(dtrDate.substring(6, 8)) + "/u65E5";
}
/**
* 当前日期
* @return
*/
public static Date getCurrentDate()
{
Calendar cal = Calendar.getInstance();
Date d = cal.getTime();
return d;
}
/**
* 当前年月
* @return
*/
public static String getCurrentYearMonth()
{
Calendar cal = Calendar.getInstance();
String currentYear = (new Integer(cal.get(1))).toString();
String currentMonth = null;
if (cal.get(2) < 9)
currentMonth = "0" + (new Integer(cal.get(2) + 1)).toString();
else
currentMonth = (new Integer(cal.get(2) + 1)).toString();
return currentYear + currentMonth;
}
/**
* 当前年
* @return
*/
public static int getCurrentYear()
{
Calendar cal = Calendar.getInstance();
int currentYear = cal.get(1);
return currentYear;
}
/**
* 字符转化成时间
* @param strDate 时间字符串
* @param oracleFormat 格式
* @return
*/
public static Date stringToDate(String strDate, String oracleFormat)
{
if (strDate == null)
return null;
Hashtable h = new Hashtable();
String javaFormat = "";
String s = oracleFormat.toLowerCase();
if (s.indexOf("yyyy") != -1)
h.put(new Integer(s.indexOf("yyyy")), "yyyy");
else if (s.indexOf("yy") != -1)
h.put(new Integer(s.indexOf("yy")), "yy");
if (s.indexOf("mm") != -1)
h.put(new Integer(s.indexOf("mm")), "MM");
if (s.indexOf("dd") != -1)
h.put(new Integer(s.indexOf("dd")), "dd");
if (s.indexOf("hh24") != -1)
h.put(new Integer(s.indexOf("hh24")), "HH");
if (s.indexOf("mi") != -1)
h.put(new Integer(s.indexOf("mi")), "mm");
if (s.indexOf("ss") != -1)
h.put(new Integer(s.indexOf("ss")), "ss");
for (int intStart = 0; s.indexOf("-", intStart) != -1; intStart++)
{
intStart = s.indexOf("-", intStart);
h.put(new Integer(intStart), "-");
}
for (int intStart = 0; s.indexOf("/", intStart) != -1; intStart++)
{
intStart = s.indexOf("/", intStart);
h.put(new Integer(intStart), "/");
}
for (int intStart = 0; s.indexOf(" ", intStart) != -1; intStart++)
{
intStart = s.indexOf(" ", intStart);
h.put(new Integer(intStart), " ");
}
for (int intStart = 0; s.indexOf(":", intStart) != -1; intStart++)
{
intStart = s.indexOf(":", intStart);
h.put(new Integer(intStart), ":");
}
if (s.indexOf("/u5E74") != -1)
h.put(new Integer(s.indexOf("/u5E74")), "/u5E74");
if (s.indexOf("/u6708") != -1)
h.put(new Integer(s.indexOf("/u6708")), "/u6708");
if (s.indexOf("/u65E5") != -1)
h.put(new Integer(s.indexOf("/u65E5")), "/u65E5");
if (s.indexOf("/u65F6") != -1)
h.put(new Integer(s.indexOf("/u65F6")), "/u65F6");
if (s.indexOf("/u5206") != -1)
h.put(new Integer(s.indexOf("/u5206")), "/u5206");
if (s.indexOf("/u79D2") != -1)
h.put(new Integer(s.indexOf("/u79D2")), "/u79D2");
int i = 0;
while (h.size() != 0)
{
Enumeration e = h.keys();
int n = 0;
while (e.hasMoreElements())
{
i = ((Integer) e.nextElement()).intValue();
if (i >= n)
n = i;
}
String temp = (String) h.get(new Integer(n));
h.remove(new Integer(n));
javaFormat = temp + javaFormat;
}
SimpleDateFormat df = new SimpleDateFormat(javaFormat);
Date myDate = new Date();
try
{
myDate = df.parse(strDate);
} catch (Exception e)
{
return null;
}
return myDate;
}
/**
* 日期转化成字符串
* @param d 日期
* @param format 格式
* @return
*/
public static String dateToString(Date d, String format)
{
if (d == null)
return "";
Hashtable h = new Hashtable();
String javaFormat = "";
String s = format.toLowerCase();
if (s.indexOf("yyyy") != -1)
h.put(new Integer(s.indexOf("yyyy")), "yyyy");
else if (s.indexOf("yy") != -1)
h.put(new Integer(s.indexOf("yy")), "yy");
if (s.indexOf("mm") != -1)
h.put(new Integer(s.indexOf("mm")), "MM");
if (s.indexOf("dd") != -1)
h.put(new Integer(s.indexOf("dd")), "dd");
if (s.indexOf("hh24") != -1)
h.put(new Integer(s.indexOf("hh24")), "HH");
if (s.indexOf("mi") != -1)
h.put(new Integer(s.indexOf("mi")), "mm");
if (s.indexOf("ss") != -1)
h.put(new Integer(s.indexOf("ss")), "ss");
for (int intStart = 0; s.indexOf("-", intStart) != -1; intStart++)
{
intStart = s.indexOf("-", intStart);
h.put(new Integer(intStart), "-");
}
for (int intStart = 0; s.indexOf("/", intStart) != -1; intStart++)
{
intStart = s.indexOf("/", intStart);
h.put(new Integer(intStart), "/");
}
for (int intStart = 0; s.indexOf(" ", intStart) != -1; intStart++)
{
intStart = s.indexOf(" ", intStart);
h.put(new Integer(intStart), " ");
}
for (int intStart = 0; s.indexOf(":", intStart) != -1; intStart++)
{
intStart = s.indexOf(":", intStart);
h.put(new Integer(intStart), ":");
}
if (s.indexOf("/u5E74") != -1)
h.put(new Integer(s.indexOf("/u5E74")), "/u5E74");
if (s.indexOf("/u6708") != -1)
h.put(new Integer(s.indexOf("/u6708")), "/u6708");
if (s.indexOf("/u65E5") != -1)
h.put(new Integer(s.indexOf("/u65E5")), "/u65E5");
if (s.indexOf("/u65F6") != -1)
h.put(new Integer(s.indexOf("/u65F6")), "/u65F6");
if (s.indexOf("/u5206") != -1)
h.put(new Integer(s.indexOf("/u5206")), "/u5206");
if (s.indexOf("/u79D2") != -1)
h.put(new Integer(s.indexOf("/u79D2")), "/u79D2");
int i = 0;
while (h.size() != 0)
{
Enumeration e = h.keys();
int n = 0;
while (e.hasMoreElements())
{
i = ((Integer) e.nextElement()).intValue();
if (i >= n)
n = i;
}
String temp = (String) h.get(new Integer(n));
h.remove(new Integer(n));
javaFormat = temp + javaFormat;
}
SimpleDateFormat df = new SimpleDateFormat(javaFormat,
new DateFormatSymbols());
return df.format(d);
}
/**
* 格式化日期
* @param d 日期
* @param format 格式
* @return
*/
public static String getDate(Date d, String format)
{
if (d == null)
return "";
Hashtable h = new Hashtable();
String javaFormat = "" ;
String s = format.toLowerCase();
if (s.indexOf("yyyy") != -1)
h.put(new Integer(s.indexOf("yyyy")), "yyyy");
else if (s.indexOf("yy") != -1)
h.put(new Integer(s.indexOf("yy")), "yy");
if (s.indexOf("mm") != -1)
h.put(new Integer(s.indexOf("mm")), "MM");
if (s.indexOf("dd") != -1)
h.put(new Integer(s.indexOf("dd")), "dd");
if (s.indexOf("hh24") != -1)
h.put(new Integer(s.indexOf("hh24")), "HH");
if (s.indexOf("mi") != -1)
h.put(new Integer(s.indexOf("mi")), "mm");
if (s.indexOf("ss") != -1)
h.put(new Integer(s.indexOf("ss")), "ss");
for (int intStart = 0; s.indexOf("-", intStart) != -1; intStart++)
{
intStart = s.indexOf("-", intStart);
h.put(new Integer(intStart), "-");
}
for (int intStart = 0; s.indexOf("/", intStart) != -1; intStart++)
{
intStart = s.indexOf("/", intStart);
h.put(new Integer(intStart), "/");
}
for (int intStart = 0; s.indexOf(" ", intStart) != -1; intStart++)
{
intStart = s.indexOf(" ", intStart);
h.put(new Integer(intStart), " ");
}
for (int intStart = 0; s.indexOf(":", intStart) != -1; intStart++)
{
intStart = s.indexOf(":", intStart);
h.put(new Integer(intStart), ":");
}
if (s.indexOf("/u5E74") != -1)
h.put(new Integer(s.indexOf("/u5E74")), "/u5E74");
if (s.indexOf("/u6708") != -1)
h.put(new Integer(s.indexOf("/u6708")), "/u6708");
if (s.indexOf("/u65E5") != -1)
h.put(new Integer(s.indexOf("/u65E5")), "/u65E5");
if (s.indexOf("/u65F6") != -1)
h.put(new Integer(s.indexOf("/u65F6")), "/u65F6");
if (s.indexOf("/u5206") != -1)
h.put(new Integer(s.indexOf("/u5206")), "/u5206");
if (s.indexOf("/u79D2") != -1)
h.put(new Integer(s.indexOf("/u79D2")), "/u79D2");
int i = 0;
while (h.size() != 0)
{
Enumeration e = h.keys();
int n = 0;
while (e.hasMoreElements())
{
i = ((Integer) e.nextElement()).intValue();
if (i >= n)
n = i;
}
String temp = (String) h.get(new Integer(n));
h.remove(new Integer(n));
javaFormat = temp + javaFormat;
}
SimpleDateFormat df = new SimpleDateFormat(javaFormat,
new DateFormatSymbols());
return df.format(d);
}
/**
* 比较日期1是否大于等于日期2
* @param s1 日期1
* @param s2 日期2
* @return
*/
public static boolean yearMonthGreatEqual(String s1, String s2)
{
String temp1 = s1.substring(0, 4);
String temp2 = s2.substring(0, 4);
String temp3 = s1.substring(4, 6);
String temp4 = s2.substring(4, 6);
if (Integer.parseInt(temp1) > Integer.parseInt(temp2))
return true;
if (Integer.parseInt(temp1) == Integer.parseInt(temp2))
return Integer.parseInt(temp3) >= Integer.parseInt(temp4);
return false;
}
/**
* 获得oracle格式的日期字符串
* @param d 日期
* @return
*/
public static String getOracleFormatDateStr(Date d)
{
return getDate(d, "YYYY-MM-DD HH24:MI:SS");
}
public static String getLastDay(String term)
{
int getYear = Integer.parseInt(term.substring(0, 4));
int getMonth = Integer.parseInt(term.substring(4, 6));
String getLastDay = "";
if (getMonth == 2)
{
if (getYear % 4 == 0 && getYear % 100 != 0 || getYear % 400 == 0)
getLastDay = "29";
else
getLastDay = "28";
} else if (getMonth == 4 || getMonth == 6 || getMonth == 9
|| getMonth == 11)
getLastDay = "30";
else
getLastDay = "31";
return String.valueOf(getYear) + "/u5E74" + String.valueOf(getMonth)
+ "/u6708" + getLastDay + "/u65E5";
}
/**
* 增加月
* @param strDate 初始年月
* @param intDiff 增加的数量
* @return
*/
public static String getMonthBetween(String strDate, int intDiff)
{
try
{
int intYear = Integer.parseInt(strDate.substring(0, 4));
int intMonth = Integer.parseInt(strDate.substring(4, 6));
String strDay = "";
if (strDate.length() > 6)
strDay = strDate.substring(6, strDate.length());
for (intMonth += intDiff; intMonth <= 0; intMonth += 12)
intYear--;
for (; intMonth > 12; intMonth -= 12)
intYear++;
if (intMonth < 10)
{
return Integer.toString(intYear) + "0"
+ Integer.toString(intMonth) + strDay;
}
return Integer.toString(intYear) + Integer.toString(intMonth)
+ strDay;
} catch (Exception e)
{
return "";
}
}
/**
* 计算两个年月之间的相差月数
* @param strDateBegin
* @param strDateEnd
* @return
*/
public static String getMonthBetween(String strDateBegin, String strDateEnd)
{
try
{
String strOut;
if (strDateBegin.equals("") || strDateEnd.equals("")
|| strDateBegin.length() != 6 || strDateEnd.length() != 6)
{
strOut = "";
} else
{
int intMonthBegin = Integer.parseInt(strDateBegin.substring(0,
4))
* 12 + Integer.parseInt(strDateBegin.substring(4, 6));
int intMonthEnd = Integer.parseInt(strDateEnd.substring(0, 4))
* 12 + Integer.parseInt(strDateEnd.substring(4, 6));
strOut = String.valueOf(intMonthBegin - intMonthEnd);
}
return strOut;
} catch (Exception e)
{
return "0";
}
}
/**
* 将“yyyymmdd”格式的日期转化成“yyyy-mm-dd”格式
* @param strDate
* @return
*/
public static String getStrHaveAcross(String strDate)
{
try
{
return strDate.substring(0, 4) + "-" + strDate.substring(4, 6)
+ "-" + strDate.substring(6, 8);
} catch (Exception e)
{
return strDate;
}
}
/**
* 计算当前日期的下个月的第一天
* @return
*/
public static String getFirstDayOfNextMonth()
{
String strToday = getCurrentDate_String();
return increaseYearMonth(strToday.substring(0, 6)) + "01";
}
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