这是一个java的日期操作工具类,希望能对大家有帮助
package
cn.vetech.framework.util;
/**
日期类
* @author ybfjm@163.net
* @date 2003-12-04
* @version 1.0
*/
import java.util. * ;
import java.text. * ;
import java.util.Calendar;
import org.apache.commons.lang.RandomStringUtils;
public class VeDate {
/**
* 获取现在时间
*
* @return 返回时间类型 yyyy-MM-dd HH:mm:ss
*/
public static Date getNowDate() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
String dateString = formatter.format(currentTime);
ParsePosition pos = new ParsePosition( 8 );
Date currentTime_2 = formatter.parse(dateString, pos);
return currentTime_2;
}
/**
* 获取现在时间
*
* @return返回短时间格式 yyyy-MM-dd
*/
public static Date getNowDateShort() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
String dateString = formatter.format(currentTime);
ParsePosition pos = new ParsePosition( 8 );
Date currentTime_2 = formatter.parse(dateString, pos);
return currentTime_2;
}
/**
* 获取现在时间
*
* @return返回字符串格式 yyyy-MM-dd HH:mm:ss
*/
public static String getStringDate() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
String dateString = formatter.format(currentTime);
return dateString;
}
/**
* 获取现在时间
*
* @return 返回短时间字符串格式yyyy-MM-dd
*/
public static String getStringDateShort() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
String dateString = formatter.format(currentTime);
return dateString;
}
/**
* 获取时间 小时:分;秒 HH:mm:ss
*
* @return
*/
public static String getTimeShort() {
SimpleDateFormat formatter = new SimpleDateFormat( " HH:mm:ss " );
Date currentTime = new Date();
String dateString = formatter.format(currentTime);
return dateString;
}
/**
* 将长时间格式字符串转换为时间 yyyy-MM-dd HH:mm:ss
*
* @param strDate
* @return
*/
public static Date strToDateLong(String strDate) {
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
ParsePosition pos = new ParsePosition( 0 );
Date strtodate = formatter.parse(strDate, pos);
return strtodate;
}
/**
* 将长时间格式时间转换为字符串 yyyy-MM-dd HH:mm:ss
*
* @param dateDate
* @return
*/
public static String dateToStrLong(java.util.Date dateDate) {
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
String dateString = formatter.format(dateDate);
return dateString;
}
/**
* 将短时间格式时间转换为字符串 yyyy-MM-dd
*
* @param dateDate
* @param k
* @return
*/
public static String dateToStr(java.util.Date dateDate) {
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
String dateString = formatter.format(dateDate);
return dateString;
}
/**
* 将短时间格式字符串转换为时间 yyyy-MM-dd
*
* @param strDate
* @return
*/
public static Date strToDate(String strDate) {
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
ParsePosition pos = new ParsePosition( 0 );
Date strtodate = formatter.parse(strDate, pos);
return strtodate;
}
/**
* 得到现在时间
*
* @return
*/
public static Date getNow() {
Date currentTime = new Date();
return currentTime;
}
/**
* 提取一个月中的最后一天
*
* @param day
* @return
*/
public static Date getLastDate( long day) {
Date date = new Date();
long date_3_hm = date.getTime() - 3600000 * 34 * day;
Date date_3_hm_date = new Date(date_3_hm);
return date_3_hm_date;
}
/**
* 得到现在时间
*
* @return 字符串 yyyyMMdd HHmmss
*/
public static String getStringToday() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyyMMdd HHmmss " );
String dateString = formatter.format(currentTime);
return dateString;
}
/**
* 得到现在小时
*/
public static String getHour() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
String dateString = formatter.format(currentTime);
String hour;
hour = dateString.substring( 11 , 13 );
return hour;
}
/**
* 得到现在分钟
*
* @return
*/
public static String getTime() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
String dateString = formatter.format(currentTime);
String min;
min = dateString.substring( 14 , 16 );
return min;
}
/**
* 根据用户传入的时间表示格式,返回当前时间的格式 如果是yyyyMMdd,注意字母y不能大写。
*
* @param sformat
* yyyyMMddhhmmss
* @return
*/
public static String getUserDate(String sformat) {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat(sformat);
String dateString = formatter.format(currentTime);
return dateString;
}
/**
* 二个小时时间间的差值,必须保证二个时间都是"HH:MM"的格式,返回字符型的分钟
*/
public static String getTwoHour(String st1, String st2) {
String[] kk = null ;
String[] jj = null ;
kk = st1.split( " : " );
jj = st2.split( " : " );
if (Integer.parseInt(kk[ 0 ]) < Integer.parseInt(jj[ 0 ]))
return " 0 " ;
else {
double y = Double.parseDouble(kk[ 0 ]) + Double.parseDouble(kk[ 1 ]) / 60 ;
double u = Double.parseDouble(jj[ 0 ]) + Double.parseDouble(jj[ 1 ]) / 60 ;
if ((y - u) > 0 )
return y - u + "" ;
else
return " 0 " ;
}
}
/**
* 得到二个日期间的间隔天数
*/
public static String getTwoDay(String sj1, String sj2) {
SimpleDateFormat myFormatter = new SimpleDateFormat( " yyyy-MM-dd " );
long day = 0 ;
try {
java.util.Date date = myFormatter.parse(sj1);
java.util.Date mydate = myFormatter.parse(sj2);
day = (date.getTime() - mydate.getTime()) / ( 24 * 60 * 60 * 1000 );
} catch (Exception e) {
return "" ;
}
return day + "" ;
}
/**
* 时间前推或后推分钟,其中JJ表示分钟.
*/
public static String getPreTime(String sj1, String jj) {
SimpleDateFormat format = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
String mydate1 = "" ;
try {
Date date1 = format.parse(sj1);
long Time = (date1.getTime() / 1000 ) + Integer.parseInt(jj) * 60 ;
date1.setTime(Time * 1000 );
mydate1 = format.format(date1);
} catch (Exception e) {
}
return mydate1;
}
/**
* 得到一个时间延后或前移几天的时间,nowdate为时间,delay为前移或后延的天数
*/
public static String getNextDay(String nowdate, String delay) {
try {
SimpleDateFormat format = new SimpleDateFormat( " yyyy-MM-dd " );
String mdate = "" ;
Date d = strToDate(nowdate);
Double myTime = (d.getTime() / 1000 ) + Double.parseDouble(delay) * 24 * 60 * 60 ;
long l = myTime.longValue();
d.setTime(l * 1000 );
mdate = format.format(d);
return mdate;
} catch (Exception e) {
return "" ;
}
}
/**
* 判断是否润年
*
* @param ddate
* @return
*/
public static boolean isLeapYear(String ddate) {
/**
* 详细设计: 1.被400整除是闰年,否则: 2.不能被4整除则不是闰年 3.能被4整除同时不能被100整除则是闰年
* 3.能被4整除同时能被100整除则不是闰年
*/
Date d = strToDate(ddate);
GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
gc.setTime(d);
int year = gc.get(Calendar.YEAR);
if ((year % 400 ) == 0 )
return true ;
else if ((year % 4 ) == 0 ) {
if ((year % 100 ) == 0 )
return false ;
else
return true ;
} else
return false ;
}
/**
* 返回美国时间格式 26 Apr 2006
*
* @param str
* @return
*/
public static String getEDate(String str) {
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
ParsePosition pos = new ParsePosition( 0 );
Date strtodate = formatter.parse(str, pos);
String j = strtodate.toString();
String[] k = j.split( " " );
return k[ 2 ] + k[ 1 ].toUpperCase() + k[ 5 ].substring( 2 , 4 );
}
/**
* 获取一个月的最后一天
*
* @param dat
* @return
*/
public static String getEndDateOfMonth(String dat) { // yyyy-MM-dd
String str = dat.substring( 0 , 8 );
String month = dat.substring( 5 , 7 );
int mon = Integer.parseInt(month);
if (mon == 1 || mon == 3 || mon == 5 || mon == 7 || mon == 8 || mon == 10 || mon == 12 ) {
str += " 31 " ;
} else if (mon == 4 || mon == 6 || mon == 9 || mon == 11 ) {
str += " 30 " ;
} else {
if (isLeapYear(dat)) {
str += " 29 " ;
} else {
str += " 28 " ;
}
}
return str;
}
/**
* 当前这个月的第一天
*
* @return
*/
public static String getFirstDateOfMonth() {
return getUserDate( " yyyy-MM " ) + " -01 " ;
}
/**
* 当前这个月的最后一天
*
* @return
*/
public static String getEndDateOfMonth() {
return getEndDateOfMonth(getStringDateShort());
}
/**
* 判断二个时间是否在同一个周
*
* @param date1
* @param date2
* @return
*/
public static boolean isSameWeekDates(Date date1, Date date2) {
Calendar cal1 = Calendar.getInstance();
Calendar cal2 = Calendar.getInstance();
cal1.setTime(date1);
cal2.setTime(date2);
int subYear = cal1.get(Calendar.YEAR) - cal2.get(Calendar.YEAR);
if ( 0 == subYear) {
if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))
return true ;
} else if ( 1 == subYear && 11 == cal2.get(Calendar.MONTH)) {
// 如果12月的最后一周横跨来年第一周的话则最后一周即算做来年的第一周
if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))
return true ;
} else if ( - 1 == subYear && 11 == cal1.get(Calendar.MONTH)) {
if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))
return true ;
}
return false ;
}
/**
* 产生周序列,即得到当前时间所在的年度是第几周
*
* @return
*/
public static String getSeqWeek() {
Calendar c = Calendar.getInstance(Locale.CHINA);
String week = Integer.toString(c.get(Calendar.WEEK_OF_YEAR));
if (week.length() == 1 )
week = " 0 " + week;
String year = Integer.toString(c.get(Calendar.YEAR));
return year + week;
}
/**
* 获得一个日期所在的周的星期几的日期,如要找出2002年2月3日所在周的星期一是几号
*
* @param sdate
* @param num
* @return
*/
public static String getWeek(String sdate, String num) {
// 再转换为时间
Date dd = VeDate.strToDate(sdate);
Calendar c = Calendar.getInstance();
c.setTime(dd);
if (num.equals( " 1 " )) // 返回星期一所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
else if (num.equals( " 2 " )) // 返回星期二所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.TUESDAY);
else if (num.equals( " 3 " )) // 返回星期三所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.WEDNESDAY);
else if (num.equals( " 4 " )) // 返回星期四所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.THURSDAY);
else if (num.equals( " 5 " )) // 返回星期五所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.FRIDAY);
else if (num.equals( " 6 " )) // 返回星期六所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.SATURDAY);
else if (num.equals( " 0 " )) // 返回星期日所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
return new SimpleDateFormat( " yyyy-MM-dd " ).format(c.getTime());
}
/**
* 根据一个日期,返回是星期几的字符串
*
* @param sdate
* @return
*/
public static String getWeek(String sdate) {
// 再转换为时间
Date date = VeDate.strToDate(sdate);
Calendar c = Calendar.getInstance();
c.setTime(date);
// int hour=c.get(Calendar.DAY_OF_WEEK);
// hour中存的就是星期几了,其范围 1~7
// 1=星期日 7=星期六,其他类推
return new SimpleDateFormat( " EEEE " ).format(c.getTime());
}
public static String getWeekStr(String sdate) {
String str = "" ;
str = VeDate.getWeek(sdate);
if ( " 1 " .equals(str)) {
str = " 星期日 " ;
} else if ( " 2 " .equals(str)) {
str = " 星期一 " ;
} else if ( " 3 " .equals(str)) {
str = " 星期二 " ;
} else if ( " 4 " .equals(str)) {
str = " 星期三 " ;
} else if ( " 5 " .equals(str)) {
str = " 星期四 " ;
} else if ( " 6 " .equals(str)) {
str = " 星期五 " ;
} else if ( " 7 " .equals(str)) {
str = " 星期六 " ;
}
return str;
}
/**
* 两个时间之间的天数
*
* @param date1
* @param date2
* @return
*/
public static long getDays(String date1, String date2) {
if (date1 == null || date1.equals( "" ))
return 0 ;
if (date2 == null || date2.equals( "" ))
return 0 ;
// 转换为标准时间
SimpleDateFormat myFormatter = new SimpleDateFormat( " yyyy-MM-dd " );
java.util.Date date = null ;
java.util.Date mydate = null ;
try {
date = myFormatter.parse(date1);
mydate = myFormatter.parse(date2);
} catch (Exception e) {
}
long day = (date.getTime() - mydate.getTime()) / ( 24 * 60 * 60 * 1000 );
return day;
}
/**
* 形成如下的日历 , 根据传入的一个时间返回一个结构 星期日 星期一 星期二 星期三 星期四 星期五 星期六 下面是当月的各个时间
* 此函数返回该日历第一行星期日所在的日期
*
* @param sdate
* @return
*/
public static String getNowMonth(String sdate) {
// 取该时间所在月的一号
sdate = sdate.substring( 0 , 8 ) + " 01 " ;
// 得到这个月的1号是星期几
Date date = VeDate.strToDate(sdate);
Calendar c = Calendar.getInstance();
c.setTime(date);
int u = c.get(Calendar.DAY_OF_WEEK);
String newday = VeDate.getNextDay(sdate, ( 1 - u) + "" );
return newday;
}
/**
* 批量生成不重复的ID 主要用于批量插入的情况
*
* @param k
* @param csList
* @return
*/
public static String getNo( int k, List < String > csList) {
if (csList == null )
return "" ;
String s = getNo(k);
while (csList.contains(s)) {
System.out.println(s + " 重复 " );
s = getNo(k);
}
csList.add(s);
return s;
}
/**
* 保证一次产生10000个随机数内无重复 平均一秒钟能产生250个随机数
*/
static List < String > randList = new ArrayList < String > ();
public static String getNo( int k) {
if (randList.size() > 10000 ) {
randList.clear();
}
String rno = getNoNo(k);
while (randList.contains(rno)) {
System.out.println(rno);
rno = getNoNo(k);
}
randList.add(rno);
return rno;
}
private static String getNoNo( int k) {
try {
Thread.sleep( 1 );
} catch (InterruptedException e) {
e.printStackTrace();
}
String rno = getUserDate( " yyyyMMddHHmmss " ) + RandomStringUtils.randomNumeric(k);
return rno;
}
/**
* 返回一个随机数
*
* @param i
* @return
*/
public static String getRandom( int i) {
Random jjj = new Random();
// int suiJiShu = jjj.nextInt(9);
if (i == 0 )
return "" ;
String jj = "" ;
for ( int k = 0 ; k < i; k ++ ) {
jj = jj + jjj.nextInt( 9 );
}
return jj;
}
/**
*
* @param args
*/
public static boolean RightDate(String date) {
SimpleDateFormat sdf = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
;
if (date == null )
return false ;
if (date.length() > 10 ) {
sdf = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
} else {
sdf = new SimpleDateFormat( " yyyy-MM-dd " );
}
try {
sdf.parse(date);
} catch (ParseException pe) {
return false ;
}
return true ;
}
/** *************************************************************************
* //nd=1表示返回的值中包含年度 //yf=1表示返回的值中包含月份 //rq=1表示返回的值中包含日期 //format表示返回的格式 1
* 以年月日中文返回 2 以横线-返回 // 3 以斜线/返回 4 以缩写不带其它符号形式返回 // 5 以点号.返回
************************************************************************* */
public static String getStringDateMonth(String sdate, String nd, String yf, String rq, String format) {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
String dateString = formatter.format(currentTime);
String s_nd = dateString.substring( 0 , 4 ); // 年份
String s_yf = dateString.substring( 5 , 7 ); // 月份
String s_rq = dateString.substring( 8 , 10 ); // 日期
String sreturn = "" ;
roc.util.MyChar mc = new roc.util.MyChar();
if (sdate == null || sdate.equals( "" ) || ! mc.Isdate(sdate)) { // 处理空值情况
if (nd.equals( " 1 " )) {
sreturn = s_nd;
// 处理间隔符
if (format.equals( " 1 " ))
sreturn = sreturn + " 年 " ;
else if (format.equals( " 2 " ))
sreturn = sreturn + " - " ;
else if (format.equals( " 3 " ))
sreturn = sreturn + " / " ;
else if (format.equals( " 5 " ))
sreturn = sreturn + " . " ;
}
// 处理月份
if (yf.equals( " 1 " )) {
sreturn = sreturn + s_yf;
if (format.equals( " 1 " ))
sreturn = sreturn + " 月 " ;
else if (format.equals( " 2 " ))
sreturn = sreturn + " - " ;
else if (format.equals( " 3 " ))
sreturn = sreturn + " / " ;
else if (format.equals( " 5 " ))
sreturn = sreturn + " . " ;
}
// 处理日期
if (rq.equals( " 1 " )) {
sreturn = sreturn + s_rq;
if (format.equals( " 1 " ))
sreturn = sreturn + " 日 " ;
}
} else {
// 不是空值,也是一个合法的日期值,则先将其转换为标准的时间格式
sdate = roc.util.RocDate.getOKDate(sdate);
s_nd = sdate.substring( 0 , 4 ); // 年份
s_yf = sdate.substring( 5 , 7 ); // 月份
s_rq = sdate.substring( 8 , 10 ); // 日期
if (nd.equals( " 1 " )) {
sreturn = s_nd;
// 处理间隔符
if (format.equals( " 1 " ))
sreturn = sreturn + " 年 " ;
else if (format.equals( " 2 " ))
sreturn = sreturn + " - " ;
else if (format.equals( " 3 " ))
sreturn = sreturn + " / " ;
else if (format.equals( " 5 " ))
sreturn = sreturn + " . " ;
}
// 处理月份
if (yf.equals( " 1 " )) {
sreturn = sreturn + s_yf;
if (format.equals( " 1 " ))
sreturn = sreturn + " 月 " ;
else if (format.equals( " 2 " ))
sreturn = sreturn + " - " ;
else if (format.equals( " 3 " ))
sreturn = sreturn + " / " ;
else if (format.equals( " 5 " ))
sreturn = sreturn + " . " ;
}
// 处理日期
if (rq.equals( " 1 " )) {
sreturn = sreturn + s_rq;
if (format.equals( " 1 " ))
sreturn = sreturn + " 日 " ;
}
}
return sreturn;
}
public static String getNextMonthDay(String sdate, int m) {
sdate = getOKDate(sdate);
int year = Integer.parseInt(sdate.substring( 0 , 4 ));
int month = Integer.parseInt(sdate.substring( 5 , 7 ));
month = month + m;
if (month < 0 ) {
month = month + 12 ;
year = year - 1 ;
} else if (month > 12 ) {
month = month - 12 ;
year = year + 1 ;
}
String smonth = "" ;
if (month < 10 )
smonth = " 0 " + month;
else
smonth = "" + month;
return year + " - " + smonth + " -10 " ;
}
public static String getOKDate(String sdate) {
if (sdate == null || sdate.equals( "" ))
return getStringDateShort();
if ( ! VeStr.Isdate(sdate)) {
sdate = getStringDateShort();
}
// 将“/”转换为“-”
sdate = VeStr.Replace(sdate, " / " , " - " );
// 如果只有8位长度,则要进行转换
if (sdate.length() == 8 )
sdate = sdate.substring( 0 , 4 ) + " - " + sdate.substring( 4 , 6 ) + " - " + sdate.substring( 6 , 8 );
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
ParsePosition pos = new ParsePosition( 0 );
Date strtodate = formatter.parse(sdate, pos);
String dateString = formatter.format(strtodate);
return dateString;
}
public static void main(String[] args) throws Exception {
try {
List list = new ArrayList();
System.out.println(getUserDate( " yyyyMMddHHmmss " ));
for ( int i = 0 ; i < 10000 ; i ++ ) {
getNo( 4 , list);
}
System.out.println(getUserDate( " yyyyMMddHHmmss " ));
System.out.println(randList.size());
} catch (Exception e) {
throw new Exception();
}
// System.out.println("sss");
}
}
/**
日期类
* @author ybfjm@163.net
* @date 2003-12-04
* @version 1.0
*/
import java.util. * ;
import java.text. * ;
import java.util.Calendar;
import org.apache.commons.lang.RandomStringUtils;
public class VeDate {
/**
* 获取现在时间
*
* @return 返回时间类型 yyyy-MM-dd HH:mm:ss
*/
public static Date getNowDate() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
String dateString = formatter.format(currentTime);
ParsePosition pos = new ParsePosition( 8 );
Date currentTime_2 = formatter.parse(dateString, pos);
return currentTime_2;
}
/**
* 获取现在时间
*
* @return返回短时间格式 yyyy-MM-dd
*/
public static Date getNowDateShort() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
String dateString = formatter.format(currentTime);
ParsePosition pos = new ParsePosition( 8 );
Date currentTime_2 = formatter.parse(dateString, pos);
return currentTime_2;
}
/**
* 获取现在时间
*
* @return返回字符串格式 yyyy-MM-dd HH:mm:ss
*/
public static String getStringDate() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
String dateString = formatter.format(currentTime);
return dateString;
}
/**
* 获取现在时间
*
* @return 返回短时间字符串格式yyyy-MM-dd
*/
public static String getStringDateShort() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
String dateString = formatter.format(currentTime);
return dateString;
}
/**
* 获取时间 小时:分;秒 HH:mm:ss
*
* @return
*/
public static String getTimeShort() {
SimpleDateFormat formatter = new SimpleDateFormat( " HH:mm:ss " );
Date currentTime = new Date();
String dateString = formatter.format(currentTime);
return dateString;
}
/**
* 将长时间格式字符串转换为时间 yyyy-MM-dd HH:mm:ss
*
* @param strDate
* @return
*/
public static Date strToDateLong(String strDate) {
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
ParsePosition pos = new ParsePosition( 0 );
Date strtodate = formatter.parse(strDate, pos);
return strtodate;
}
/**
* 将长时间格式时间转换为字符串 yyyy-MM-dd HH:mm:ss
*
* @param dateDate
* @return
*/
public static String dateToStrLong(java.util.Date dateDate) {
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
String dateString = formatter.format(dateDate);
return dateString;
}
/**
* 将短时间格式时间转换为字符串 yyyy-MM-dd
*
* @param dateDate
* @param k
* @return
*/
public static String dateToStr(java.util.Date dateDate) {
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
String dateString = formatter.format(dateDate);
return dateString;
}
/**
* 将短时间格式字符串转换为时间 yyyy-MM-dd
*
* @param strDate
* @return
*/
public static Date strToDate(String strDate) {
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
ParsePosition pos = new ParsePosition( 0 );
Date strtodate = formatter.parse(strDate, pos);
return strtodate;
}
/**
* 得到现在时间
*
* @return
*/
public static Date getNow() {
Date currentTime = new Date();
return currentTime;
}
/**
* 提取一个月中的最后一天
*
* @param day
* @return
*/
public static Date getLastDate( long day) {
Date date = new Date();
long date_3_hm = date.getTime() - 3600000 * 34 * day;
Date date_3_hm_date = new Date(date_3_hm);
return date_3_hm_date;
}
/**
* 得到现在时间
*
* @return 字符串 yyyyMMdd HHmmss
*/
public static String getStringToday() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyyMMdd HHmmss " );
String dateString = formatter.format(currentTime);
return dateString;
}
/**
* 得到现在小时
*/
public static String getHour() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
String dateString = formatter.format(currentTime);
String hour;
hour = dateString.substring( 11 , 13 );
return hour;
}
/**
* 得到现在分钟
*
* @return
*/
public static String getTime() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
String dateString = formatter.format(currentTime);
String min;
min = dateString.substring( 14 , 16 );
return min;
}
/**
* 根据用户传入的时间表示格式,返回当前时间的格式 如果是yyyyMMdd,注意字母y不能大写。
*
* @param sformat
* yyyyMMddhhmmss
* @return
*/
public static String getUserDate(String sformat) {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat(sformat);
String dateString = formatter.format(currentTime);
return dateString;
}
/**
* 二个小时时间间的差值,必须保证二个时间都是"HH:MM"的格式,返回字符型的分钟
*/
public static String getTwoHour(String st1, String st2) {
String[] kk = null ;
String[] jj = null ;
kk = st1.split( " : " );
jj = st2.split( " : " );
if (Integer.parseInt(kk[ 0 ]) < Integer.parseInt(jj[ 0 ]))
return " 0 " ;
else {
double y = Double.parseDouble(kk[ 0 ]) + Double.parseDouble(kk[ 1 ]) / 60 ;
double u = Double.parseDouble(jj[ 0 ]) + Double.parseDouble(jj[ 1 ]) / 60 ;
if ((y - u) > 0 )
return y - u + "" ;
else
return " 0 " ;
}
}
/**
* 得到二个日期间的间隔天数
*/
public static String getTwoDay(String sj1, String sj2) {
SimpleDateFormat myFormatter = new SimpleDateFormat( " yyyy-MM-dd " );
long day = 0 ;
try {
java.util.Date date = myFormatter.parse(sj1);
java.util.Date mydate = myFormatter.parse(sj2);
day = (date.getTime() - mydate.getTime()) / ( 24 * 60 * 60 * 1000 );
} catch (Exception e) {
return "" ;
}
return day + "" ;
}
/**
* 时间前推或后推分钟,其中JJ表示分钟.
*/
public static String getPreTime(String sj1, String jj) {
SimpleDateFormat format = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
String mydate1 = "" ;
try {
Date date1 = format.parse(sj1);
long Time = (date1.getTime() / 1000 ) + Integer.parseInt(jj) * 60 ;
date1.setTime(Time * 1000 );
mydate1 = format.format(date1);
} catch (Exception e) {
}
return mydate1;
}
/**
* 得到一个时间延后或前移几天的时间,nowdate为时间,delay为前移或后延的天数
*/
public static String getNextDay(String nowdate, String delay) {
try {
SimpleDateFormat format = new SimpleDateFormat( " yyyy-MM-dd " );
String mdate = "" ;
Date d = strToDate(nowdate);
Double myTime = (d.getTime() / 1000 ) + Double.parseDouble(delay) * 24 * 60 * 60 ;
long l = myTime.longValue();
d.setTime(l * 1000 );
mdate = format.format(d);
return mdate;
} catch (Exception e) {
return "" ;
}
}
/**
* 判断是否润年
*
* @param ddate
* @return
*/
public static boolean isLeapYear(String ddate) {
/**
* 详细设计: 1.被400整除是闰年,否则: 2.不能被4整除则不是闰年 3.能被4整除同时不能被100整除则是闰年
* 3.能被4整除同时能被100整除则不是闰年
*/
Date d = strToDate(ddate);
GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
gc.setTime(d);
int year = gc.get(Calendar.YEAR);
if ((year % 400 ) == 0 )
return true ;
else if ((year % 4 ) == 0 ) {
if ((year % 100 ) == 0 )
return false ;
else
return true ;
} else
return false ;
}
/**
* 返回美国时间格式 26 Apr 2006
*
* @param str
* @return
*/
public static String getEDate(String str) {
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
ParsePosition pos = new ParsePosition( 0 );
Date strtodate = formatter.parse(str, pos);
String j = strtodate.toString();
String[] k = j.split( " " );
return k[ 2 ] + k[ 1 ].toUpperCase() + k[ 5 ].substring( 2 , 4 );
}
/**
* 获取一个月的最后一天
*
* @param dat
* @return
*/
public static String getEndDateOfMonth(String dat) { // yyyy-MM-dd
String str = dat.substring( 0 , 8 );
String month = dat.substring( 5 , 7 );
int mon = Integer.parseInt(month);
if (mon == 1 || mon == 3 || mon == 5 || mon == 7 || mon == 8 || mon == 10 || mon == 12 ) {
str += " 31 " ;
} else if (mon == 4 || mon == 6 || mon == 9 || mon == 11 ) {
str += " 30 " ;
} else {
if (isLeapYear(dat)) {
str += " 29 " ;
} else {
str += " 28 " ;
}
}
return str;
}
/**
* 当前这个月的第一天
*
* @return
*/
public static String getFirstDateOfMonth() {
return getUserDate( " yyyy-MM " ) + " -01 " ;
}
/**
* 当前这个月的最后一天
*
* @return
*/
public static String getEndDateOfMonth() {
return getEndDateOfMonth(getStringDateShort());
}
/**
* 判断二个时间是否在同一个周
*
* @param date1
* @param date2
* @return
*/
public static boolean isSameWeekDates(Date date1, Date date2) {
Calendar cal1 = Calendar.getInstance();
Calendar cal2 = Calendar.getInstance();
cal1.setTime(date1);
cal2.setTime(date2);
int subYear = cal1.get(Calendar.YEAR) - cal2.get(Calendar.YEAR);
if ( 0 == subYear) {
if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))
return true ;
} else if ( 1 == subYear && 11 == cal2.get(Calendar.MONTH)) {
// 如果12月的最后一周横跨来年第一周的话则最后一周即算做来年的第一周
if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))
return true ;
} else if ( - 1 == subYear && 11 == cal1.get(Calendar.MONTH)) {
if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))
return true ;
}
return false ;
}
/**
* 产生周序列,即得到当前时间所在的年度是第几周
*
* @return
*/
public static String getSeqWeek() {
Calendar c = Calendar.getInstance(Locale.CHINA);
String week = Integer.toString(c.get(Calendar.WEEK_OF_YEAR));
if (week.length() == 1 )
week = " 0 " + week;
String year = Integer.toString(c.get(Calendar.YEAR));
return year + week;
}
/**
* 获得一个日期所在的周的星期几的日期,如要找出2002年2月3日所在周的星期一是几号
*
* @param sdate
* @param num
* @return
*/
public static String getWeek(String sdate, String num) {
// 再转换为时间
Date dd = VeDate.strToDate(sdate);
Calendar c = Calendar.getInstance();
c.setTime(dd);
if (num.equals( " 1 " )) // 返回星期一所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
else if (num.equals( " 2 " )) // 返回星期二所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.TUESDAY);
else if (num.equals( " 3 " )) // 返回星期三所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.WEDNESDAY);
else if (num.equals( " 4 " )) // 返回星期四所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.THURSDAY);
else if (num.equals( " 5 " )) // 返回星期五所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.FRIDAY);
else if (num.equals( " 6 " )) // 返回星期六所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.SATURDAY);
else if (num.equals( " 0 " )) // 返回星期日所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
return new SimpleDateFormat( " yyyy-MM-dd " ).format(c.getTime());
}
/**
* 根据一个日期,返回是星期几的字符串
*
* @param sdate
* @return
*/
public static String getWeek(String sdate) {
// 再转换为时间
Date date = VeDate.strToDate(sdate);
Calendar c = Calendar.getInstance();
c.setTime(date);
// int hour=c.get(Calendar.DAY_OF_WEEK);
// hour中存的就是星期几了,其范围 1~7
// 1=星期日 7=星期六,其他类推
return new SimpleDateFormat( " EEEE " ).format(c.getTime());
}
public static String getWeekStr(String sdate) {
String str = "" ;
str = VeDate.getWeek(sdate);
if ( " 1 " .equals(str)) {
str = " 星期日 " ;
} else if ( " 2 " .equals(str)) {
str = " 星期一 " ;
} else if ( " 3 " .equals(str)) {
str = " 星期二 " ;
} else if ( " 4 " .equals(str)) {
str = " 星期三 " ;
} else if ( " 5 " .equals(str)) {
str = " 星期四 " ;
} else if ( " 6 " .equals(str)) {
str = " 星期五 " ;
} else if ( " 7 " .equals(str)) {
str = " 星期六 " ;
}
return str;
}
/**
* 两个时间之间的天数
*
* @param date1
* @param date2
* @return
*/
public static long getDays(String date1, String date2) {
if (date1 == null || date1.equals( "" ))
return 0 ;
if (date2 == null || date2.equals( "" ))
return 0 ;
// 转换为标准时间
SimpleDateFormat myFormatter = new SimpleDateFormat( " yyyy-MM-dd " );
java.util.Date date = null ;
java.util.Date mydate = null ;
try {
date = myFormatter.parse(date1);
mydate = myFormatter.parse(date2);
} catch (Exception e) {
}
long day = (date.getTime() - mydate.getTime()) / ( 24 * 60 * 60 * 1000 );
return day;
}
/**
* 形成如下的日历 , 根据传入的一个时间返回一个结构 星期日 星期一 星期二 星期三 星期四 星期五 星期六 下面是当月的各个时间
* 此函数返回该日历第一行星期日所在的日期
*
* @param sdate
* @return
*/
public static String getNowMonth(String sdate) {
// 取该时间所在月的一号
sdate = sdate.substring( 0 , 8 ) + " 01 " ;
// 得到这个月的1号是星期几
Date date = VeDate.strToDate(sdate);
Calendar c = Calendar.getInstance();
c.setTime(date);
int u = c.get(Calendar.DAY_OF_WEEK);
String newday = VeDate.getNextDay(sdate, ( 1 - u) + "" );
return newday;
}
/**
* 批量生成不重复的ID 主要用于批量插入的情况
*
* @param k
* @param csList
* @return
*/
public static String getNo( int k, List < String > csList) {
if (csList == null )
return "" ;
String s = getNo(k);
while (csList.contains(s)) {
System.out.println(s + " 重复 " );
s = getNo(k);
}
csList.add(s);
return s;
}
/**
* 保证一次产生10000个随机数内无重复 平均一秒钟能产生250个随机数
*/
static List < String > randList = new ArrayList < String > ();
public static String getNo( int k) {
if (randList.size() > 10000 ) {
randList.clear();
}
String rno = getNoNo(k);
while (randList.contains(rno)) {
System.out.println(rno);
rno = getNoNo(k);
}
randList.add(rno);
return rno;
}
private static String getNoNo( int k) {
try {
Thread.sleep( 1 );
} catch (InterruptedException e) {
e.printStackTrace();
}
String rno = getUserDate( " yyyyMMddHHmmss " ) + RandomStringUtils.randomNumeric(k);
return rno;
}
/**
* 返回一个随机数
*
* @param i
* @return
*/
public static String getRandom( int i) {
Random jjj = new Random();
// int suiJiShu = jjj.nextInt(9);
if (i == 0 )
return "" ;
String jj = "" ;
for ( int k = 0 ; k < i; k ++ ) {
jj = jj + jjj.nextInt( 9 );
}
return jj;
}
/**
*
* @param args
*/
public static boolean RightDate(String date) {
SimpleDateFormat sdf = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
;
if (date == null )
return false ;
if (date.length() > 10 ) {
sdf = new SimpleDateFormat( " yyyy-MM-dd HH:mm:ss " );
} else {
sdf = new SimpleDateFormat( " yyyy-MM-dd " );
}
try {
sdf.parse(date);
} catch (ParseException pe) {
return false ;
}
return true ;
}
/** *************************************************************************
* //nd=1表示返回的值中包含年度 //yf=1表示返回的值中包含月份 //rq=1表示返回的值中包含日期 //format表示返回的格式 1
* 以年月日中文返回 2 以横线-返回 // 3 以斜线/返回 4 以缩写不带其它符号形式返回 // 5 以点号.返回
************************************************************************* */
public static String getStringDateMonth(String sdate, String nd, String yf, String rq, String format) {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
String dateString = formatter.format(currentTime);
String s_nd = dateString.substring( 0 , 4 ); // 年份
String s_yf = dateString.substring( 5 , 7 ); // 月份
String s_rq = dateString.substring( 8 , 10 ); // 日期
String sreturn = "" ;
roc.util.MyChar mc = new roc.util.MyChar();
if (sdate == null || sdate.equals( "" ) || ! mc.Isdate(sdate)) { // 处理空值情况
if (nd.equals( " 1 " )) {
sreturn = s_nd;
// 处理间隔符
if (format.equals( " 1 " ))
sreturn = sreturn + " 年 " ;
else if (format.equals( " 2 " ))
sreturn = sreturn + " - " ;
else if (format.equals( " 3 " ))
sreturn = sreturn + " / " ;
else if (format.equals( " 5 " ))
sreturn = sreturn + " . " ;
}
// 处理月份
if (yf.equals( " 1 " )) {
sreturn = sreturn + s_yf;
if (format.equals( " 1 " ))
sreturn = sreturn + " 月 " ;
else if (format.equals( " 2 " ))
sreturn = sreturn + " - " ;
else if (format.equals( " 3 " ))
sreturn = sreturn + " / " ;
else if (format.equals( " 5 " ))
sreturn = sreturn + " . " ;
}
// 处理日期
if (rq.equals( " 1 " )) {
sreturn = sreturn + s_rq;
if (format.equals( " 1 " ))
sreturn = sreturn + " 日 " ;
}
} else {
// 不是空值,也是一个合法的日期值,则先将其转换为标准的时间格式
sdate = roc.util.RocDate.getOKDate(sdate);
s_nd = sdate.substring( 0 , 4 ); // 年份
s_yf = sdate.substring( 5 , 7 ); // 月份
s_rq = sdate.substring( 8 , 10 ); // 日期
if (nd.equals( " 1 " )) {
sreturn = s_nd;
// 处理间隔符
if (format.equals( " 1 " ))
sreturn = sreturn + " 年 " ;
else if (format.equals( " 2 " ))
sreturn = sreturn + " - " ;
else if (format.equals( " 3 " ))
sreturn = sreturn + " / " ;
else if (format.equals( " 5 " ))
sreturn = sreturn + " . " ;
}
// 处理月份
if (yf.equals( " 1 " )) {
sreturn = sreturn + s_yf;
if (format.equals( " 1 " ))
sreturn = sreturn + " 月 " ;
else if (format.equals( " 2 " ))
sreturn = sreturn + " - " ;
else if (format.equals( " 3 " ))
sreturn = sreturn + " / " ;
else if (format.equals( " 5 " ))
sreturn = sreturn + " . " ;
}
// 处理日期
if (rq.equals( " 1 " )) {
sreturn = sreturn + s_rq;
if (format.equals( " 1 " ))
sreturn = sreturn + " 日 " ;
}
}
return sreturn;
}
public static String getNextMonthDay(String sdate, int m) {
sdate = getOKDate(sdate);
int year = Integer.parseInt(sdate.substring( 0 , 4 ));
int month = Integer.parseInt(sdate.substring( 5 , 7 ));
month = month + m;
if (month < 0 ) {
month = month + 12 ;
year = year - 1 ;
} else if (month > 12 ) {
month = month - 12 ;
year = year + 1 ;
}
String smonth = "" ;
if (month < 10 )
smonth = " 0 " + month;
else
smonth = "" + month;
return year + " - " + smonth + " -10 " ;
}
public static String getOKDate(String sdate) {
if (sdate == null || sdate.equals( "" ))
return getStringDateShort();
if ( ! VeStr.Isdate(sdate)) {
sdate = getStringDateShort();
}
// 将“/”转换为“-”
sdate = VeStr.Replace(sdate, " / " , " - " );
// 如果只有8位长度,则要进行转换
if (sdate.length() == 8 )
sdate = sdate.substring( 0 , 4 ) + " - " + sdate.substring( 4 , 6 ) + " - " + sdate.substring( 6 , 8 );
SimpleDateFormat formatter = new SimpleDateFormat( " yyyy-MM-dd " );
ParsePosition pos = new ParsePosition( 0 );
Date strtodate = formatter.parse(sdate, pos);
String dateString = formatter.format(strtodate);
return dateString;
}
public static void main(String[] args) throws Exception {
try {
List list = new ArrayList();
System.out.println(getUserDate( " yyyyMMddHHmmss " ));
for ( int i = 0 ; i < 10000 ; i ++ ) {
getNo( 4 , list);
}
System.out.println(getUserDate( " yyyyMMddHHmmss " ));
System.out.println(randList.size());
} catch (Exception e) {
throw new Exception();
}
// System.out.println("sss");
}
}