package com.mall.common;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import org.apache.log4j.Logger;
public class DateUtils {
private static Logger log=Logger.getLogger(DateUtils.class);
/**
* 获取昨天日期
*
* @param date
* @return
* ace
*/
public static String getYesterDay(Date date) {
java.text.Format formatter = new java.text.SimpleDateFormat(
"yyyy-MM-dd");
long beforeTime = (date.getTime() / 1000) - 24 * 60 * 60;
date.setTime(beforeTime * 1000);
return formatter.format(date);
}
/**
* 获取昨天日期(返回数值)
*
* @param date
* @return num
*/
public static Integer getYesterDayNum(Date date) {
java.text.Format formatter = new java.text.SimpleDateFormat("yyyyMMdd");
long beforeTime = (date.getTime() / 1000) - 24 * 60 * 60;
date.setTime(beforeTime * 1000);
return Integer.parseInt(formatter.format(date));
}
/**
* 获取一周前的日期(当前日期往前推7天)
*
* @param date
* @return
*/
public static String getWeekdayBeforeDate(Date date) {
java.text.Format formatter = new java.text.SimpleDateFormat(
"yyyy-MM-dd");
long beforeTime = (date.getTime() / 1000) - 24 * 60 * 60 * 7;
date.setTime(beforeTime * 1000);
return formatter.format(date);
}
/**
* 获取一周前的日期(当前日期往前推7天)(返回数值)
*
* @param date
* @return
*/
public static Integer getWeekdayBeforeDateNum(Date date) {
java.text.Format formatter = new java.text.SimpleDateFormat("yyyyMMdd");
long beforeTime = (date.getTime() / 1000) - 24 * 60 * 60 * 7;
date.setTime(beforeTime * 1000);
return Integer.parseInt(formatter.format(date));
}
/**
* 获取一月前的日期(当前日期往前推30天)
*
* @param date
* @return
*/
public static String getMonthBeforeDate(Date date) {
java.text.Format formatter = new java.text.SimpleDateFormat(
"yyyy-MM-dd");
long beforeTime = (date.getTime() / 1000) - 24 * 60 * 60 * 30;
date.setTime(beforeTime * 1000);
return formatter.format(date);
}
/**
* 获取一月前的日期(当前日期往前推30天)(返回数值)
*
* @param date
* @return
*/
public static Integer getMonthBeforeDateNum(Date date) {
java.text.Format formatter = new java.text.SimpleDateFormat("yyyyMMdd");
long beforeTime = (date.getTime() / 1000) - 24 * 60 * 60 * 30;
date.setTime(beforeTime * 1000);
return Integer.parseInt(formatter.format(date));
}
/**
* 获取三月前的日期(当前日期往前推90天)
*
* @param date
* @return
*/
public static String get3MonthBeforeDate(Date date) {
java.text.Format formatter = new java.text.SimpleDateFormat(
"yyyy-MM-dd");
long beforeTime = (date.getTime() / 1000) - 24 * 60 * 60 * 30 * 3;
date.setTime(beforeTime * 1000);
String d = formatter.format(date);
return d;
}
/**
* 获取三月前的日期(当前日期往前推30天)(返回数值)
*
* @param date
* @return
*/
public static Integer get3MonthBeforeDateNum(Date date) {
java.text.Format formatter = new java.text.SimpleDateFormat("yyyyMMdd");
long beforeTime = (date.getTime() / 1000) - 24 * 60 * 60 * 30 * 3;
date.setTime(beforeTime * 1000);
return Integer.parseInt(formatter.format(date));
}
/**
* 获取一年后的日期
*
* @return
*/
public static String getNextYear(int chooseYear, Date date) {
java.text.Format formatter = new java.text.SimpleDateFormat(
"yyyy-MM-dd");
long beforeTime = (date.getTime() / 1000) + 60 * 60 * 24 * 365
* chooseYear;
date.setTime(beforeTime * 1000);
return formatter.format(date);
}
/**
* 日期转换成字符串
*
* @param date
* @return
*/
public static String convertDateToStr(Date date) {
java.text.Format formatter = new java.text.SimpleDateFormat(
"yyyy-MM-dd");
return formatter.format(date);
}
/**
* 日期转换成字符串 yyyy-MM-dd HHmmss
*
* @param date
* @return
*/
public static String convertTimeToStr(Date date) {
java.text.Format formatter = new java.text.SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");
return formatter.format(date);
}
/**
* 将日期转为数值
*
* @param date
* @return
*/
public static Integer convertDateToNum(Date date) {
java.text.Format formatter = new java.text.SimpleDateFormat("yyyyMMdd");
return Integer.parseInt(formatter.format(date));
}
/**
* 将字符串日期转为数值
*
* @param date
* @return
*/
public static Integer convertStrToNum(String date) {
if (date.contains("-")) {
date = date.replace("-", "");
} else if (date.contains(".")) {
date = date.replace(".", "");
} else if (date.contains("/")) {
date = date.replace("/", "");
}
return Integer.parseInt(date);
}
/**
* 时间转换器 第一个参数 要转化的数据类型 --- java.util.Date 第二个参数 要转化的数据 --- "2010-12-12"
*
*/
public static Date convertStrTODate( String str,Class<Date> type,String datePattern) {
if (str == null) {
return null;
} else {
if (type == java.util.Date.class) {
if (str instanceof String) {
try {
SimpleDateFormat sdf = new SimpleDateFormat(datePattern);
return sdf.parse(str);
} catch (ParseException e) {
throw new RuntimeException("您输入的数据格式不对");
}
} else {
throw new RuntimeException("您要转化的数据输入不是String类型");
}
} else {
throw new RuntimeException("您要转化的数据类型不对");
}
}
}
/**
* 根据生日计算年龄
*
* @param birthDay
* @return
* @throws Exception
*/
public static int getAge(Date birthDay) throws Exception {
Calendar cal = Calendar.getInstance();
if (cal.before(birthDay)) {
throw new IllegalArgumentException(
"The birthDay is before Now.It's unbelievable!");
}
int yearNow = cal.get(Calendar.YEAR);
int monthNow = cal.get(Calendar.MONTH);
int dayOfMonthNow = cal.get(Calendar.DAY_OF_MONTH);
cal.setTime(birthDay);
int yearBirth = cal.get(Calendar.YEAR);
int monthBirth = cal.get(Calendar.MONTH);
int dayOfMonthBirth = cal.get(Calendar.DAY_OF_MONTH);
int age = yearNow - yearBirth;
if (monthNow <= monthBirth) {
if (monthNow == monthBirth) {
// monthNow==monthBirth
if (dayOfMonthNow < dayOfMonthBirth) {
age--;
} else {
// do nothing
}
} else {
// monthNow>monthBirth
age--;
}
} else {
// monthNow<monthBirth
// donothing
}
return age;
}
///////////////////////////////////////根据时间段获取时间的集合//////////////////////////////////////////////////////////////////
public static List<String> getDateListBydates(String s1,String s2,String format) throws ParseException{
List<String>list=new ArrayList<String>();
//String s1 = "2012-02-01";
//String s2 = "2012-04-04";
SimpleDateFormat sdf = new SimpleDateFormat(format);
Date begin=sdf.parse(s1);
Date end=sdf.parse(s2);
double between=(end.getTime()-begin.getTime())/1000;//除以1000是为了转换成秒
double day=between/(24*3600);
for(int i = 0;i<=day;i++){
Calendar cd = Calendar.getInstance();
cd.setTime(sdf.parse(s1));
cd.add(Calendar.DATE, i);//增加一天
//cd.add(Calendar.MONTH, n);//增加一个月
log.info(sdf.format(cd.getTime()));
list.add(sdf.format(cd.getTime()));
}
return list;
}
//获取指定年月的总天数
public static int getLastDay(int year, int month) {
int day = 1;
Calendar cal = Calendar.getInstance();
cal.set(year,month - 1,day);
int last = cal.getActualMaximum(Calendar.DATE);
System.out.println(last);
return last;
}
//获取指定年月的日期
@SuppressWarnings("unchecked")
public static List<String> getDatesByMonth(int year, int month){
List<String> list=new ArrayList();
String yyyy=year+"";
String mm=month+"";
String dd="01";
if(month<10){
mm="0"+month;
}
int num=getLastDay(year, month);
for(int i=1;i<=num;i++){
if(i<10){
dd="0"+i;
}else{
dd=i+"";
}
list.add(yyyy+"-"+mm+"-"+dd);
System.out.println(yyyy+"-"+mm+"-"+dd);
}
return list;
}
/**
*
* @param datestr 解析字符串 如2014-04-1716:38:57
* @param sourceDateformat 源日期格式 如yyyy-MM-ddHH:mm:ss
* @param formatStr 要转换的日期格式 如(yyyy-MM-dd HH:mm:ss)
* @return
*/
public static String strTOdateTOStr(String datestr,String sourceDateformat,String targetDateformat){
// String str="2014-04-1716:38:57";
try {
SimpleDateFormat sourceFormat = new SimpleDateFormat(sourceDateformat);
SimpleDateFormat targetFormat = new SimpleDateFormat(targetDateformat);
return targetFormat.format(sourceFormat.parse(datestr));
} catch (Exception e) {
log.info("strTOdateTOStr:"+e);
}
return null;
}
public static void main(String[] args) throws Exception{
//getDatesByMonth(2013,2);
getDateListBydates("20130517","20130519","yyyyMMdd");
}
public class DateUtil
{
//默认显示日期的格式
public static final String DATAFORMAT_STR = "yyyy-MM-dd";
//默认显示日期的格式
public static final String YYYY_MM_DATAFORMAT_STR = "yyyy-MM";
//默认显示日期时间的格式
public static final String DATATIMEF_STR = "yyyy-MM-dd HH:mm:ss";
//默认显示简体中文日期的格式
public static final String ZHCN_DATAFORMAT_STR = "yyyy年MM月dd日";
//默认显示简体中文日期时间的格式
public static final String ZHCN_DATATIMEF_STR = "yyyy年MM月dd日HH时mm分ss秒";
//默认显示简体中文日期时间的格式
public static final String ZHCN_DATATIMEF_STR_4yMMddHHmm = "yyyy年MM月dd日HH时mm分";
private static DateFormat dateFormat = null;
private static DateFormat dateTimeFormat = null;
private static DateFormat zhcnDateFormat = null;
private static DateFormat zhcnDateTimeFormat = null;
static
{
dateFormat = new SimpleDateFormat(DATAFORMAT_STR);
dateTimeFormat = new SimpleDateFormat(DATATIMEF_STR);
zhcnDateFormat = new SimpleDateFormat(ZHCN_DATAFORMAT_STR);
zhcnDateTimeFormat = new SimpleDateFormat(ZHCN_DATATIMEF_STR);
}
private static DateFormat getDateFormat(String formatStr)
{
if (formatStr.equalsIgnoreCase(DATAFORMAT_STR))
{
return dateFormat;
}
else
if (formatStr.equalsIgnoreCase(DATATIMEF_STR))
{
return dateTimeFormat;
}
else
if (formatStr.equalsIgnoreCase(ZHCN_DATAFORMAT_STR))
{
return zhcnDateFormat;
}
else
if (formatStr.equalsIgnoreCase(ZHCN_DATATIMEF_STR))
{
return zhcnDateTimeFormat;
}
else
{
return new SimpleDateFormat(formatStr);
}
}
/**
* 按照默认显示日期时间的格式"yyyy-MM-dd HH:mm:ss"，转化dateTimeStr为Date类型
* dateTimeStr必须是"yyyy-MM-dd HH:mm:ss"的形式
* @param dateTimeStr
* @return
*/
public static Date getDate(String dateTimeStr)
{
return getDate(dateTimeStr, DATATIMEF_STR);
}
/**
* 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 || dateTimeStr.equals(""))
{
return null;
}
DateFormat sdf = getDateFormat(formatStr);
java.util.Date d = sdf.parse(dateTimeStr);
return d;
}
catch (ParseException e)
{
throw new RuntimeException(e);
}
}
/**
* 将YYYYMMDD转换成Date日期
* @param date
* @return
* @throws BusinessException
*/
public static Date transferDate(String date) throws Exception
{
if (date == null || date.length() < 1)
return null;
if (date.length() != 8)
throw new Exception("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 Exception("日期格式错误");
String str = yyyy + con + mm + con + dd;
return DateUtil.getDate(str, DateUtil.DATAFORMAT_STR);
}
/**
* 将YYYY－MM－DD日期转换成yyyymmdd格式字符串
* @param date
* @return
*/
public static String getYYYYMMDDDate(Date date)
{
if (date == null)
return null;
String yyyy = getYear(date) + "";
String mm = getMonth(date) + "";
String dd = getDay(date) + "";
mm = StringUtil.rightAlign(mm, 2, "0");
dd = StringUtil.rightAlign(dd, 2, "0");
return yyyy + mm + dd;
}
/**
* 将YYYY－MM－DD日期转换成YYYYMMDDHHMMSS格式字符串
* @param date
* @return
*/
public static String getYYYYMMDDHHMMSSDate(Date date)
{
if (date == null)
return null;
String yyyy = getYear(date) + "";
String mm = getMonth(date) + "";
String dd = getDay(date) + "";
String hh = getHour(date) + "";
String min = getMin(date) + "";
String ss = getSecond(date) + "";
mm = StringUtil.rightAlign(mm, 2, "0");
dd = StringUtil.rightAlign(dd, 2, "0");
hh = StringUtil.rightAlign(hh, 2, "0");
min = StringUtil.rightAlign(min, 2, "0");
ss = StringUtil.rightAlign(ss, 2, "0");
return yyyy + mm + dd + hh + min + ss;
}
/**
* 将YYYY－MM－DD日期转换成yyyymmdd格式字符串
* @param date
* @return
*/
public static String getYYYYMMDDDate(String date)
{
return getYYYYMMDDDate(getDate(date, DATAFORMAT_STR));
}
/**
* 将Date转换成字符串“yyyy-mm-dd hh:mm:ss”的字符串
* @param date
* @return
*/
public static String dateToDateString(Date date)
{
return dateToDateString(date, DATATIMEF_STR);
}
/**
* 将Date转换成formatStr格式的字符串
* @param date
* @param formatStr
* @return
*/
public static String dateToDateString(Date date, String formatStr)
{
DateFormat df = getDateFormat(formatStr);
return df.format(date);
}
/**
* 返回一个yyyy-MM-dd HH:mm:ss 形式的日期时间字符串中的HH:mm:ss
* @param dateTime
* @return
*/
public static String getTimeString(String dateTime)
{
return getTimeString(dateTime, DATATIMEF_STR);
}
/**
* 返回一个formatStr格式的日期时间字符串中的HH:mm:ss
* @param dateTime
* @param formatStr
* @return
*/
public static String getTimeString(String dateTime, String formatStr)
{
Date d = getDate(dateTime, formatStr);
String s = dateToDateString(d);
return s.substring(DATATIMEF_STR.indexOf('H'));
}
/**
* 获取当前日期yyyy-MM-dd的形式
* @return
*/
public static String getCurDate()
{
//return dateToDateString(new Date(),DATAFORMAT_STR);
return dateToDateString(Calendar.getInstance().getTime(), DATAFORMAT_STR);
}
/**
* 获取当前日期yyyy年MM月dd日的形式
* @return
*/
public static String getCurZhCNDate()
{
return dateToDateString(new Date(), ZHCN_DATAFORMAT_STR);
}
/**
* 获取当前日期时间yyyy-MM-dd HH:mm:ss的形式
* @return
*/
public static String getCurDateTime()
{
return dateToDateString(new Date(), DATATIMEF_STR);
}
/**
* 获取当前日期时间yyyy年MM月dd日HH时mm分ss秒的形式
* @return
*/
public static String getCurZhCNDateTime()
{
return dateToDateString(new Date(), ZHCN_DATATIMEF_STR);
}
/**
* 获取日期d的days天后的一个Date
* @param d
* @param days
* @return
*/
public static Date getInternalDateByDay(Date d, int days)
{
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
now.add(Calendar.DATE, days);
return now.getTime();
}
public static Date getInternalDateByMon(Date d, int months)
{
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
now.add(Calendar.MONTH, months);
return now.getTime();
}
public static Date getInternalDateByYear(Date d, int years)
{
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
now.add(Calendar.YEAR, years);
return now.getTime();
}
public static Date getInternalDateBySec(Date d, int sec)
{
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
now.add(Calendar.SECOND, sec);
return now.getTime();
}
public static Date getInternalDateByMin(Date d, int min)
{
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
now.add(Calendar.MINUTE, min);
return now.getTime();
}
public static Date getInternalDateByHour(Date d, int hours)
{
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
now.add(Calendar.HOUR_OF_DAY, hours);
return now.getTime();
}
/**
* 根据一个日期字符串，返回日期格式，目前支持4种
* 如果都不是，则返回null
* @param DateString
* @return
*/
public static String getFormateStr(String DateString)
{
String patternStr1 = "[0-9]{4}-[0-9]{1,2}-[0-9]{1,2}"; //"yyyy-MM-dd"
String patternStr2 = "[0-9]{4}-[0-9]{1,2}-[0-9]{1,2}\\s[0-9]{1,2}:[0-9]{1,2}:[0-9]{1,2}"; //"yyyy-MM-dd HH:mm:ss";
String patternStr3 = "[0-9]{4}年[0-9]{1,2}月[0-9]{1,2}日";//"yyyy年MM月dd日"
String patternStr4 = "[0-9]{4}年[0-9]{1,2}月[0-9]{1,2}日[0-9]{1,2}时[0-9]{1,2}分[0-9]{1,2}秒";//"yyyy年MM月dd日HH时mm分ss秒"
Pattern p = Pattern.compile(patternStr1);
Matcher m = p.matcher(DateString);
boolean b = m.matches();
if (b)
return DATAFORMAT_STR;
p = Pattern.compile(patternStr2);
m = p.matcher(DateString);
b = m.matches();
if (b)
return DATATIMEF_STR;
p = Pattern.compile(patternStr3);
m = p.matcher(DateString);
b = m.matches();
if (b)
return ZHCN_DATAFORMAT_STR;
p = Pattern.compile(patternStr4);
m = p.matcher(DateString);
b = m.matches();
if (b)
return ZHCN_DATATIMEF_STR;
return null;
}
/**
* 将一个"yyyy-MM-dd HH:mm:ss"字符串，转换成"yyyy年MM月dd日HH时mm分ss秒"的字符串
* @param dateStr
* @return
*/
public static String getZhCNDateTime(String dateStr)
{
Date d = getDate(dateStr);
return dateToDateString(d, ZHCN_DATATIMEF_STR);
}
/**
* 将一个"yyyy-MM-dd"字符串，转换成"yyyy年MM月dd日"的字符串
* @param dateStr
* @return
*/
public static String getZhCNDate(String dateStr)
{
Date d = getDate(dateStr, DATAFORMAT_STR);
return dateToDateString(d, ZHCN_DATAFORMAT_STR);
}
/**
* 将dateStr从fmtFrom转换到fmtTo的格式
* @param dateStr
* @param fmtFrom
* @param fmtTo
* @return
*/
public static String getDateStr(String dateStr, String fmtFrom, String fmtTo)
{
Date d = getDate(dateStr, fmtFrom);
return dateToDateString(d, fmtTo);
}
/**
* 比较两个"yyyy-MM-dd HH:mm:ss"格式的日期，之间相差多少毫秒,time2-time1
* @param time1
* @param time2
* @return
*/
public static long compareDateStr(String time1, String time2)
{
Date d1 = getDate(time1);
Date d2 = getDate(time2);
return d2.getTime() - d1.getTime();
}
/**
* 将小时数换算成返回以毫秒为单位的时间
* @param hours
* @return
*/
public static long getMicroSec(BigDecimal hours)
{
BigDecimal bd;
bd = hours.multiply(new BigDecimal(3600 * 1000));
return bd.longValue();
}
/**
* 获取Date中的分钟
* @param d
* @return
*/
public static int getMin(Date d)
{
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
return now.get(Calendar.MINUTE);
}
/**
* 获取Date中的小时(24小时)
* @param d
* @return
*/
public static int getHour(Date d)
{
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
return now.get(Calendar.HOUR_OF_DAY);
}
/**
* 获取Date中的秒
* @param d
* @return
*/
public static int getSecond(Date d)
{
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
return now.get(Calendar.SECOND);
}
/**
* 获取xxxx-xx-xx的日
* @param d
* @return
*/
public static int getDay(Date d)
{
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
return now.get(Calendar.DAY_OF_MONTH);
}
/**
* 获取月份，1-12月
* @param d
* @return
*/
public static int getMonth(Date d)
{
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
return now.get(Calendar.MONTH) + 1;
}
/**
* 获取19xx,20xx形式的年
* @param d
* @return
*/
public static int getYear(Date d)
{
Calendar now = Calendar.getInstance(TimeZone.getDefault());
now.setTime(d);
return now.get(Calendar.YEAR);
}
/**
* 得到d的上个月的年份+月份,如200505
* @return
*/
public static String getYearMonthOfLastMon(Date d)
{
Date newdate = getInternalDateByMon(d, -1);
String year = String.valueOf(getYear(newdate));
String month = String.valueOf(getMonth(newdate));
return year + month;
}
/**
* 得到当前日期的年和月如200509
* @return String
*/
public static String getCurYearMonth()
{
Calendar now = Calendar.getInstance(TimeZone.getDefault());
String DATE_FORMAT = "yyyyMM";
java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(DATE_FORMAT);
sdf.setTimeZone(TimeZone.getDefault());
return (sdf.format(now.getTime()));
}
public static Date getNextMonth(String year, String month)
{
String datestr = year + "-" + month + "-01";
Date date = getDate(datestr, DATAFORMAT_STR);
return getInternalDateByMon(date, 1);
}
public static Date getLastMonth(String year, String month)
{
String datestr = year + "-" + month + "-01";
Date date = getDate(datestr, DATAFORMAT_STR);
return getInternalDateByMon(date, -1);
}
/**
* 得到日期d，按照页面日期控件格式，如"2001-3-16"
* @param d
* @return
*/
public static String getSingleNumDate(Date d)
{
return dateToDateString(d, DATAFORMAT_STR);
}
/**
* 得到d半年前的日期,"yyyy-MM-dd"
* @param d
* @return
*/
public static String getHalfYearBeforeStr(Date d)
{
return dateToDateString(getInternalDateByMon(d, -6), DATAFORMAT_STR);
}
/**
* 得到当前日期D的月底的前/后若干天的时间,<0表示之前，>0表示之后
* @param d
* @param days
* @return
*/
public static String getInternalDateByLastDay(Date d, int days)
{
return dateToDateString(getInternalDateByDay(d, days), DATAFORMAT_STR);
}
/**
* 日期中的年月日相加
* @param field int 需要加的字段 年 月 日
* @param amount int 加多少
* @return String
*/
public static String addDate(int field, int amount)
{
int temp = 0;
if (field == 1)
{
temp = Calendar.YEAR;
}
if (field == 2)
{
temp = Calendar.MONTH;
}
if (field == 3)
{
temp = Calendar.DATE;
}
String Time = "";
try
{
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar cal = Calendar.getInstance(TimeZone.getDefault());
cal.add(temp, amount);
Time = sdf.format(cal.getTime());
return Time;
}
catch (Exception e)
{
e.printStackTrace();
return null;
}
}
/**
* 获得系统当前月份的天数
* @return
*/
public static int getCurentMonthDay()
{
Date date = Calendar.getInstance().getTime();
return getMonthDay(date);
}
/**
* 获得指定日期月份的天数
* @return
*/
public static int getMonthDay(Date date)
{
Calendar c = Calendar.getInstance();
c.setTime(date);
return c.getActualMaximum(Calendar.DAY_OF_MONTH);
}
/**
* 获得指定日期月份的天数 yyyy-mm-dd
* @return
*/
public static int getMonthDay(String date)
{
Date strDate = getDate(date, DATAFORMAT_STR);
return getMonthDay(strDate);
}
public static String getStringDate(Calendar cal)
{
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
return format.format(cal.getTime());
}
/**
* @param args
*/
public static void main(String[] args)
{
// //System.out.print(DateUtil.getDate("04:04:04","HH:mm:ss"));
// System.out.print("\n"+DateUtil.getCurZhCNDateTime());
// System.out.print("\n"+getFormateStr(DateUtil.getCurDate()));
// System.out.print("\n"+compareDateStr("1900-1-1 1:1:2","1900-1-1 1:1:3"));
// System.out.print("\n"+getDay(new Date()));
// System.out.print("\n"+getMonth(new Date()));
// System.out.print("\n"+getYear(new Date()));
// System.out.print("\n"+getMin(new Date()));
//// System.out.print("\n"+new Date().getSeconds());
/*Date d1 = new Date(2007,11,30);
Date d2 = new Date(2007,12,1);
if(d2.compareTo(d1)>0){
System.out.println("d2大于d1");
}else{
System.out.println("d2小于d1");
}*/
System.out.println(addDate(1, 1));
System.out.println(addDate(2, 1));
System.out.println(addDate(3, 1));
System.out.println(getYYYYMMDDHHMMSSDate(new Date()));
System.out.println(getCurentMonthDay());
}
}
}
package com.grace.test;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class showDate {
public static void main(String[] args) throws ParseException {
Date d = new Date();
String s = null;
/** 输出格式: Mon May 05 15:23:58 CST 2014 */
System.out.println(d);
/** 输出格式: 2014-5-5 */
s = DateFormat.getDateInstance().format(d);
System.out.println(s);
/** 输出格式: 2014-5-5 */
s = DateFormat.getDateInstance(DateFormat.DEFAULT).format(d);
System.out.println(s);
/** 输出格式: 2014年5月5日 星期一 */
s = DateFormat.getDateInstance(DateFormat.FULL).format(d);
System.out.println(s);
/** 输出格式: 2014-5-5 */
s = DateFormat.getDateInstance(DateFormat.MEDIUM).format(d);
System.out.println(s);
/** 输出格式: 14-5-5 */
s = DateFormat.getDateInstance(DateFormat.SHORT).format(d);
System.out.println(s);
/** 输出格式: 2014-5-05 00:00:00 大写H为24小时制 */
DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
s = sdf.format(d);
System.out.println(s);
/** 输出格式: 2014-5-05 00:00:00 小写h为12小时制 */
DateFormat sdf2 = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
s = sdf2.format(d);
System.out.println(s);
/** 输出格式: 20140505000000 */
DateFormat sdf3 = new SimpleDateFormat("yyyyMMddHHmmss");
s = sdf3.format(d);
System.out.println(s);
/** 字符串转换城日期格式 */
s = sdf.format(d);
Date today = sdf.parse(s);
System.out.println("字符串转成日期1：" + today);
System.out.println("字符串转成日期2：" + sdf.format(today));
/** 单独输出年月日时分秒等 */
Calendar c = Calendar.getInstance();
System.out.println("年: " + c.get(Calendar.YEAR));
// 月份从0开始，加1校正
System.out.println("月: " + (c.get(Calendar.MONTH) + 1) + "");
System.out.println("日: " + c.get(Calendar.DAY_OF_MONTH));
System.out.println("时: " + c.get(Calendar.HOUR_OF_DAY));
System.out.println("分: " + c.get(Calendar.MINUTE));
System.out.println("秒: " + c.get(Calendar.SECOND));
System.out.println("当前时间毫秒数：" + c.getTimeInMillis());
System.out.println("当前时间: " + c.getTime());
}
}