DateUtil

package cn.analysys.userradar.utils;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Calendar;

import java.util.Date;

import java.util.GregorianCalendar;

import java.util.List;

import org.apache.commons.lang.StringUtils;

import org.apache.log4j.Logger;

import cn.analysys.userradar.context.IndexDateType;

public class DateUtil {

private final static Logger log = Logger.getLogger(DateUtil.class);

public final static String DATE_FORMATER = "yyyy-MM-dd";
public final static String DATE_SECOND_FORMATER = "yyyy-MM-dd hh:mm:ss";
public final static String DATE_FORMATER_YYYYMM = "yyyyMM";
public final static String DATE_FORMATER_YYYYMMDD_ZH = "yyyy年MM月dd日";
public final static String DATE_FORMATER_YYYYMM_ZH = "yyyy年MM月";

public static Date convertStringDate(String dateStr,String pattern) {
Date date = null;
if (StringUtils.isBlank(dateStr))
return date;
try {
date = new SimpleDateFormat(pattern).parse(dateStr);
return date;
} catch (ParseException e) {
log.error("解析字符串[" + dateStr + "]到日期错误!", e);
}
return date;
}

public static Date convertStringDate(String dateStr) {
Date date = null;
if (StringUtils.isBlank(dateStr))
return date;
try {
date = new SimpleDateFormat("yyyy-MM-dd").parse(dateStr);
return date;
} catch (ParseException e) {
log.error("解析字符串[" + dateStr + "]到日期错误!", e);
}
return date;
}

public static String getDateStr(Date date, String formate) {
return new SimpleDateFormat(formate).format(date);
}

public static String getYear(Date date) {
if (date == null)
date = new Date();
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return cal.get(Calendar.YEAR) + "";
}

public static String getMonth(Date date) {
if (date == null)
date = new Date();
Calendar cal = Calendar.getInstance();
cal.setTime(date);
String month = cal.get(Calendar.MONTH) + 1 + "";
if (month.length() < 2)
month = "0" + month;
return month;
}

public static String getWeek(Date date) {
Calendar cl = Calendar.getInstance();
cl.setTime(date);
int week = cl.get(Calendar.WEEK_OF_YEAR);
return week + "";
}

/**
* 获取当前月的周数
*

* <p>
* <P>
* Author : xiongzhengsheng
*

*

* Date : 2014-3-26
*

*
* @param key
* @throw
* @return
*/
public static List<Integer> getCurrentMonthWeeks(String dateStr) {
List<Integer> weeks = new ArrayList<Integer>();
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
try {
Date date = format.parse(dateStr);
return getCurrentMonthWeeks(date);
} catch (ParseException e) {
log.error("日期字符串[" + dateStr + "]转换日期对象错误!", e);
}
return weeks;
}

public static List<Integer> getCurrentMonthWeeks(Date date) {
List<Integer> weeks = new ArrayList<Integer>();
if (date == null)
return weeks;
Calendar cal = Calendar.getInstance();
cal.setTime(date);
Date endDate = getLastDayOfMonth(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH) + 1);

int startWeeks = Integer.parseInt(getWeek(date));
int endWeeks = Integer.parseInt(getWeek(endDate));
while (startWeeks <= endWeeks) {
weeks.add(startWeeks);
startWeeks++;
}
return weeks;
}

public static Date getLastDayOfMonth(int year, int month) {
Calendar cal = Calendar.getInstance();
// 设置年份
cal.set(Calendar.YEAR, year);
// 设置月份
cal.set(Calendar.MONTH, month - 1);
// 获取某月最大天数
int lastDay = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
// 设置日历中月份的最大天数
cal.set(Calendar.DAY_OF_MONTH, lastDay);

return cal.getTime();
}

public static String getQuarter(Date date) {
if (date == null)
date = new Date();
Calendar cal = Calendar.getInstance();
cal.setTime(date);
int month = cal.get(Calendar.MONTH) + 1;
int quarter = 1;
if (month >= 1 && month <= 3) {
quarter = 1;
} else if (month >= 4 && month <= 6) {
quarter = 2;
} else if (month >= 7 && month <= 9) {
quarter = 3;
} else if (month >= 10 && month <= 12) {
quarter = 4;
}
return quarter + "";
}

public static String getDay(Date date) {
Calendar cal = Calendar.getInstance();
cal.setTime(new Date());
int monthMaxDay = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
return "" + monthMaxDay;
}

// 日期月份加减
public static Date getMinusMonthDate(Date date, int n) {
Calendar cl = Calendar.getInstance();
cl.setTime(date);
cl.add(Calendar.MONTH, n);
date = cl.getTime();
return date;
}

public static Date getMinusYearDate(Date date, int n) {
Calendar cl = Calendar.getInstance();
cl.setTime(date);
cl.add(Calendar.YEAR, n);
date = cl.getTime();
return date;
}

public static Date getMinusDayDate(Date date, int n) {
Calendar cl = Calendar.getInstance();
cl.setTime(date);
cl.add(Calendar.DATE, n);
date = cl.getTime();
return date;
}

public static boolean checkInvalidateTime(Date startTime, Date endTime) {
Date currentDate = new Date();
if (startTime.compareTo(currentDate) <= 0 && endTime.compareTo(currentDate) >= 0) {
return true;
}
return false;
}

/**
* 获取当前所有的月份
*

* DateUtil.getMonths()
* <p>
* <P>
* Author : xiongzhengsheng
*

*

* Date : 2014-3-26
*

*
* @param endDate //结束日期
* @param type // 0:取所有年下包含的月数 1:取当前年下包含的月数
* @throw
* @return
*/
public static List<Date> getMonths(Date endDate, String type) {
List<Date> dates = new ArrayList<Date>();
if (StringUtils.isBlank(type) || !("0".equals(type) || "1".equals(type)))
type = "0";

int year = Integer.parseInt(getYear(endDate));
while (endDate.compareTo(new Date()) >= 0) {
dates.add(endDate);
endDate = getMinusMonthDate(endDate, -1);

if ("1".equals(type)) {
int currentYear = Integer.parseInt(getYear(endDate));
if (currentYear < year)
break;
}
}

return dates;
}

/**
* 获取当前所有的年数
*

* DateUtil.getYears()
* <p>
* <P>
* Author : xiongzhengsheng
*

*

* Date : 2014-3-26
*

*
* @param endDate //结束日期
* @param type // 0:取所有年下包含的月数 1:取当前年下包含的月数
* @throw
* @return
*/
public static List<Date> getYears(Date endDate, String type) {
List<Date> dates = new ArrayList<Date>();
if (StringUtils.isBlank(type) || !("0".equals(type) || "1".equals(type)))
type = "0";

dates.add(endDate);
if ("0".equals(type)) {
int endYear = Integer.parseInt(getYear(endDate)) - 1;
int startYear = Integer.parseInt(getYear(new Date()));
while (endYear >= startYear) {
dates.add(convertStringDate(endYear + "-12-01"));
endYear = endYear - 1;
}
}
return dates;
}

/**
* 获取table表格下日期时间列表
*

* DateUtil.getDateLists()
* <p>
* <P>
* Author : xiongzhengsheng
*

*

* Date : 2014-3-26
*

*
* @param dateType 按日 按周 按月 按季
* @param dateValue 当前传入的日期值
* @param flag 按年 按月状态判断
* @throw
* @return
*/
public static List<Date> getDateLists(String dateType, String dateValue, boolean flag) {
List<Date> dateLists = new ArrayList<Date>();
Date start = new Date();
Date end = convertStringDate(dateValue);
if (end == null)
end = new Date();
if (StringUtils.isBlank(dateType))
dateType = IndexDateType.MONTH;
switch (dateType) {// 加载当前下的记录数据
case "day":
if (flag)
start = convertStringDate(getYear(end) + "-" + getMonth(end) + "-" + "01");
while (end.compareTo(start) >= 0) {
dateLists.add(end);
end = getMinusMonthDate(end, -1);
}
break;
case "week":
if (flag)
start = convertStringDate(getYear(end) + "-" + getMonth(end) + "-" + "01");
while (end.compareTo(start) >= 0) {
dateLists.add(end);
end = getMinusMonthDate(end, -1);
}
break;
case "month":// 按月显示年
case "quarter":// 按季显示年
if (flag)
start = convertStringDate(getYear(end) + "-" + getMonth(end) + "-" + "01");
while (end.compareTo(start) >= 0) {
dateLists.add(end);
end = getMinusMonthDate(end, -1);
}
break;
default:
break;
}
return dateLists;
}

public static String getDateTitle(Date date, String dateType) {
String dateTitle = "";
switch (dateType) {
case "month":
dateTitle = getYear(date) + "年" + getMonth(date) + "月";
break;
case "quarter":
String val = getQuarter(date);
switch (val) {
case "1":
dateTitle = getYear(date) + "年第一季度";
break;
case "2":
dateTitle = getYear(date) + "年第二季度";
break;
case "3":
dateTitle = getYear(date) + "年第三季度";
break;
case "4":
dateTitle = getYear(date) + "年第四季度";
break;
}
break;
case "week":
dateTitle = getYear(date) + "年" + getWeek(date) + "周";
break;
default:
break;
}
return dateTitle;
}

public static Date getWeekFirstDay(int weekNum) {
Calendar cal = Calendar.getInstance();
cal.set(Calendar.WEEK_OF_YEAR, weekNum);
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
// 分别取得当前日期的年、月、日
return cal.getTime();
}
/**
* 获取某年第一天日期
* @param year 年份
* @return Date
*/
public static Date getYearFirst( int year){
Calendar calendar = Calendar.getInstance();
calendar.clear();
calendar.set(Calendar.YEAR, year);
Date currYearFirst = calendar.getTime();
return currYearFirst;
}

public static String getYearMonth(String date) {
int b=0;
String	year=date.substring(0,4);
String	count=date.substring(5,7);
b=Integer.valueOf(count);
return year+'年'+b+'月';
}

public static String getYearMonth(Date date) {
return getDateStr(date, DATE_FORMATER);
}
public static String getRoundNumber(String date) {
Double number=Math.round(Double.parseDouble(date) * 10) * 0.1d;
return number.toString();
}

public static String getRoundNumberPercent(String date) {
Double number=Math.round(Double.parseDouble(date) * 1000) * 0.1d;
return number.toString()+"%";
}
/**
* 返回指定日期的月的最后一天
*
* @param year
* @param month
* @return
*/
public static Date getLastDayOfMonth(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.set(calendar.get(Calendar.YEAR),
calendar.get(Calendar.MONTH), 1);
calendar.roll(Calendar.DATE, -1);
return calendar.getTime();
}
public static Date addYear(Date date, int yearNum) {
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(date);
gc.add(GregorianCalendar.YEAR, yearNum);
return gc.getTime();
}
public static Date addWeek(Date date, int num) {
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(date);
gc.add(GregorianCalendar.WEEK_OF_YEAR, num);
return gc.getTime();
}
public static Date addDay(Date date, int num) {
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(date);
gc.add(GregorianCalendar.DAY_OF_YEAR, num);
return gc.getTime();
}
public static Date addMonth(Date date, int num) {
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(date);
gc.add(GregorianCalendar.MONTH, num);
return gc.getTime();
}

public static String getCurrentYearMonth(String foramt){
SimpleDateFormat sdf = new SimpleDateFormat(foramt);
return sdf.format(new Date());
}
/**
* 返回指定日期的月的最后一天
*
* @param year
* @param month
* @return
*/
public static int getLastDayNumOfMonth(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.set(calendar.get(Calendar.YEAR),
calendar.get(Calendar.MONTH), 1);
calendar.roll(Calendar.DATE, -1);
return calendar.get(Calendar.DAY_OF_MONTH);
}

public static void main(String[] args) {
//    	Double date=Math.round(5.244555 * 10) * 0.1d;
//    	System.out.println("===============date:"+date);
Date d = new Date();
String currentYearMonth = getCurrentYearMonth("yyyy年MM月");
System.out.println(currentYearMonth);
//System.out.println(getQuarter(d));
//System.out.println(getQuarter(addMonth(d, -3)));

System.out.println(DateUtil.getLastDayNumOfMonth(new Date()));
}

public static  String getNewYearMonth(String date) {
SimpleDateFormat sdf = new SimpleDateFormat(DateUtil.DATE_FORMATER_YYYYMM_ZH);
SimpleDateFormat sdf1 = new SimpleDateFormat(DateUtil.DATE_FORMATER);
try {
date = sdf1.format(sdf.parse(date));
} catch (ParseException e) {
e.printStackTrace();
}
return date;
}
}