DateUtils

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package com.fengzhi.web.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class DateUtil {

	/**
	 * 
	 * @Title: getMonthFirstDay
	 * @Description: (获取本月第一天的日期：2015-01-01)
	 * @author fyf
	 * @return
	 */
	public static String getMonthFirstDay() {
		Calendar calendar = Calendar.getInstance();
		calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));

		return dateFormat("yyyy-MM-dd", calendar.getTime());
	}

	/**
	 * 
	 * @Title: getMonthFirstDay
	 * @Description: (获取本月第一天的日期：2015-02-01)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static String getMonthFirstDay(String date) {
		Calendar calendar = Calendar.getInstance();

		calendar.setTime(dateFormat("yyyy-MM-dd", date));
		calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));

		return dateFormat("yyyy-MM-dd", calendar.getTime());
	}

	/**
	 * 
	 * @Title: getMonthFirstDay
	 * @Description: (获取本月第一天的日期：2015-03-01)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static String getMonthFirstDay(Date date) {
		Calendar calendar = Calendar.getInstance();

		calendar.setTime(date);
		calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));

		return dateFormat("yyyy-MM-dd", calendar.getTime());
	}

	/**
	 * 
	 * @Title: getMonthLastDay
	 * @Description: (获取本月的最后一天：2015-01-31)
	 * @author fyf
	 * @return
	 */
	public static String getMonthLastDay() {
		Calendar calendar = Calendar.getInstance();
		calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));

		return dateFormat("yyyy-MM-dd", calendar.getTime());
	}

	/**
	 * 
	 * @Title: getMonthLastDay
	 * @Description: (获取本月的最后一天：2015-02-28)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static String getMonthLastDay(String date) {
		Calendar calendar = Calendar.getInstance();

		calendar.setTime(dateFormat("yyyy-MM-dd", date));
		calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));

		return dateFormat("yyyy-MM-dd", calendar.getTime());
	}

	/**
	 * 
	 * @Title: getMonthLastDay
	 * @Description: (获取本月的最后一天：2015-09-30)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static String getMonthLastDay(Date date) {
		Calendar calendar = Calendar.getInstance();

		calendar.setTime(date);
		calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));

		return dateFormat("yyyy-MM-dd", calendar.getTime());
	}

	/**
	 * 
	 * @Title: dateFormat
	 * @Description: (格式化日期输出格式)
	 * @author fyf
	 * @param format
	 *            (yyyy-MM-dd)/(yyyy-MM-dd HH:mm:ss)
	 * @param date
	 * 
	 * @return (2015-01-01)/(2015-02-02 10:20:30)
	 */
	public static String dateFormat(String format, Date date) {
		SimpleDateFormat sdf = new SimpleDateFormat(format);

		return sdf.format(date);
	}

	/**
	 * 
	 * @Title: dateFormat
	 * @Description: (格式化日期输出格式)
	 * @author fyf
	 * @param format
	 * @param date
	 * @return
	 */
	public static Date dateFormat(String format, String date) {
		SimpleDateFormat sdf = new SimpleDateFormat(format);

		try {
			return sdf.parse(date);
		} catch (ParseException e) {
			return new Date();
		}
	}

	/**
	 * 
	 * @Title: getYear
	 * @Description: (获取当前日期：年)
	 * @author fyf
	 * @return
	 */
	public static int getYear() {
		Calendar calendar = Calendar.getInstance();
		return calendar.get(Calendar.YEAR);
	}

	/**
	 * 
	 * @Title: getMonthOfYear
	 * @Description: (获取当前日期：月)
	 * @author fyf
	 * @return
	 */
	public static int getMonthOfYear() {
		Calendar calendar = Calendar.getInstance();
		return calendar.get(Calendar.MONTH);
	}

	/**
	 * 
	 * @Title: getDayOfMonth
	 * @Description: (获取当前日期：日)
	 * @author fyf
	 * @return
	 */
	public static int getDayOfMonth() {
		Calendar calendar = Calendar.getInstance();
		return calendar.get(Calendar.DAY_OF_MONTH);
	}

	/**
	 * 
	 * @Title: getHourOfDay
	 * @Description: (获取当前时间：时)
	 * @author fyf
	 * @return
	 */
	public static int getHourOfDay() {
		Calendar calendar = Calendar.getInstance();
		return calendar.get(Calendar.HOUR_OF_DAY);
	}

	/**
	 * 
	 * @Title: getMinute
	 * @Description: (获取当前时间：分)
	 * @author fyf
	 * @return
	 */
	public static int getMinute() {
		Calendar calendar = Calendar.getInstance();
		return calendar.get(Calendar.MINUTE);
	}

	/**
	 * 
	 * @Title: getSecond
	 * @Description: (获取当前时间：秒)
	 * @author fyf
	 * @return
	 */
	public static int getSecond() {
		Calendar calendar = Calendar.getInstance();
		return calendar.get(Calendar.SECOND);
	}

	/**
	 * 
	 * @Title: getMilliSecond
	 * @Description: (获取当前时间：毫秒)
	 * @author fyf
	 * @return
	 */
	public static int getMilliSecond() {
		Calendar calendar = Calendar.getInstance();
		return calendar.get(Calendar.MILLISECOND);
	}

	/**
	 * 
	 * @Title: getDayOfYear
	 * @Description: (获取当前日期属于当年的第几天)
	 * @author fyf
	 * @return
	 */
	public static int getDayOfYear() {
		Calendar calendar = Calendar.getInstance();
		return calendar.get(Calendar.DAY_OF_YEAR);
	}

	/**
	 * 
	 * @Title: getDayOfYearFromString
	 * @Description: (获取该日期是当年的第几天)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static int getDayOfYearFromString(String date) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(getYYYY_MM_ddFromString(date));

		return calendar.get(Calendar.DAY_OF_YEAR);
	}

	/**
	 * 
	 * @Title: getDayOfWeekFromString
	 * @Description: (获取该日期是星期几)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static String getDayOfWeekFromString(String date) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(getYYYY_MM_ddFromString(date));

		switch (calendar.get(Calendar.DAY_OF_WEEK)) {
		case Calendar.SUNDAY:
			return "星期日";
		case Calendar.MONDAY:
			return "星期一";
		case Calendar.TUESDAY:
			return "星期二";
		case Calendar.WEDNESDAY:
			return "星期三";
		case Calendar.THURSDAY:
			return "星期四";
		case Calendar.FRIDAY:
			return "星期五";
		case Calendar.SATURDAY:
			return "星期六";
		}

		return null;
	}

	/**
	 * 
	 * @Title: getDayOfWeek
	 * @Description: (获取当前日期是本周星期几)
	 * @author fyf
	 * @return
	 */
	public static String getDayOfWeek() {
		Calendar calendar = Calendar.getInstance();

		switch (calendar.get(Calendar.DAY_OF_WEEK)) {
		case Calendar.SUNDAY:
			return "星期日";
		case Calendar.MONDAY:
			return "星期一";
		case Calendar.TUESDAY:
			return "星期二";
		case Calendar.WEDNESDAY:
			return "星期三";
		case Calendar.THURSDAY:
			return "星期四";
		case Calendar.FRIDAY:
			return "星期五";
		case Calendar.SATURDAY:
			return "星期六";
		}

		return null;
	}

	/**
	 * 
	 * @Title: getWeekOfMonth
	 * @Description: (获取当前日期是本月的第几周)
	 * @author fyf
	 * @return
	 */
	public static String getWeekOfMonth() {
		Calendar calendar = Calendar.getInstance();

		switch (calendar.get(Calendar.WEEK_OF_MONTH)) {
		case 1:
			return "第一周";
		case 2:
			return "第二周";
		case 3:
			return "第三周";
		case 4:
			return "第四周";
		case 5:
			return "第五周";
		}

		return null;
	}

	/**
	 * 
	 * @Title: getWeekOfMonthFromeDate
	 * @Description: (获取该日期是当年当月的第几周)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static String getWeekOfMonthFromeDate(String date) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(getYYYY_MM_ddFromString(date));

		switch (calendar.get(Calendar.WEEK_OF_MONTH)) {
		case 1:
			return "第一周";
		case 2:
			return "第二周";
		case 3:
			return "第三周";
		case 4:
			return "第四周";
		case 5:
			return "第五周";
		}

		return null;
	}

	/**
	 * 
	 * @Title: getWeekOfYear
	 * @Description: (获取当前日期是当年的第几周)
	 * @author fyf
	 * @return
	 */
	public static String getWeekOfYear() {
		Calendar calendar = Calendar.getInstance();

		return "第" + (calendar.get(Calendar.WEEK_OF_YEAR)) + "周";
	}

	/**
	 * 
	 * @Title: getWeekOfYearFromString
	 * @Description: (获取该日期是当年的第几周)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static String getWeekOfYearFromString(String date) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(getYYYY_MM_ddFromString(date));

		return "第" + (calendar.get(Calendar.WEEK_OF_YEAR)) + "周";
	}

	/**
	 * 
	 * @Title: getYYYY_MM_dd
	 * @Description: (获取日期：2015-01-01)
	 * @author fyf
	 * @return
	 */
	public static String getYYYY_MM_dd() {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
		return sdf.format(new Date());
	}

	/**
	 * 
	 * @Title: getYYYY_MM_ddFromDate
	 * @Description: (转换日期格式 to String ：2015-06-16)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static String getYYYY_MM_ddFromDate(Date date) {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

		if (date == null)
			return getYYYY_MM_dd();

		return sdf.format(date);
	}

	/**
	 * 
	 * @Title: getYYYY_MM_ddFromString
	 * @Description: (转换日期格式 to Date ：2015-06-16)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static Date getYYYY_MM_ddFromString(String date) {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

		if (date == null || "".equals(date))
			date = getYYYY_MM_dd();

		try {
			return sdf.parse(date);
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	/**
	 * 
	 * @Title: getY_m_dHms
	 * @Description: (获取当前日期时间：2015-06-16 14:07:06)
	 * @author fyf
	 * @return
	 */
	public static String getY_m_dHms() {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		return sdf.format(new Date());
	}

	/**
	 * 
	 * @Title: getY_m_dHmsFromDate
	 * @Description: (转换日期时间格式 to String ：2015-06-16 14:07:06)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static String getY_m_dHmsFromDate(Date date) {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

		if (date == null)
			return getY_m_dHms();

		return sdf.format(date);
	}

	/**
	 * 
	 * @Title: getY_m_dHmsFromString
	 * @Description: (转换日期时间格式 to Date ：2015-06-16 14:07:06)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static Date getY_m_dHmsFromString(String date) {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

		if (date == null || "".equals(date))
			date = getY_m_dHms();

		try {
			return sdf.parse(date);
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	/**
	 * 
	 * @Title: getYmdHmsSSS
	 * @Description: (获取当前日期时间：20150616141020101)
	 * @author fyf
	 * @return
	 */
	public static String getYmdHmsSSS() {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");
		return sdf.format(new Date());
	}

	/**
	 * 
	 * @Title: getYmdHmsSSSFromDate
	 * @Description: (转换日期时间格式 to String ：20150616141020101)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static String getYmdHmsSSSFromDate(Date date) {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");

		if (date == null)
			return getYmdHmsSSS();

		return sdf.format(date);
	}

	/**
	 * 
	 * @Title: getYmdHmsSSSFromString
	 * @Description: (转换日期时间格式 to Date：20150616141020101)
	 * @author fyf
	 * @param date
	 * @return
	 */
	public static Date getYmdHmsSSSFromString(String date) {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");

		if (date == null || "".equals(date))
			date = getYmdHmsSSS();

		try {
			return sdf.parse(date);
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	/**
	 * 
	 * @Title: getMondayOfWeek
	 * @Description: (根据日期获取当周的星期一的日期)
	 * @return
	 */
	public static String getMondayDateFromString(String date) {
		// 0:表示本周； 1：表示下周；-1：表示上周
		int n = 0;
		Calendar cal = Calendar.getInstance();

		cal.setTime(getYYYY_MM_ddFromString(date));
		// 美国星期日作为每周的第一天（即：国内的本周星期天为美国的下周）
		cal.add(Calendar.DAY_OF_MONTH, -1);
		cal.add(Calendar.DATE, n * 7);
		// 想转星期几， Calendar就引用星期几（星期三：Calendar.WEDNESDAY）
		cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);

		return getYYYY_MM_ddFromDate(cal.getTime());
	}

	/**
	 * 
	 * @Title: getMondayOfWeek
	 * @Description: (根据日期获取当周的星期一的日期)
	 * @return
	 */
	public static String getMondayDateFromDate(Date date) {
		// 0:表示本周； 1：表示下周；-1：表示上周
		int n = 0;
		Calendar cal = Calendar.getInstance();

		if (date == null)
			date = new Date();

		cal.setTime(date);
		// 美国星期日作为每周的第一天（即：国内的本周星期天为美国的下周）
		cal.add(Calendar.DAY_OF_MONTH, -1);
		cal.add(Calendar.DATE, n * 7);
		// 想转星期几， Calendar就引用星期几（星期三：Calendar.WEDNESDAY）
		cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);

		return getYYYY_MM_ddFromDate(cal.getTime());
	}

	public static String getSundayOfWeek(String date) {
		// 0:表示本周； 1：表示下周；-1：表示上周
		int n = 0;
		Calendar cal = Calendar.getInstance();
		cal.setTime(getYYYY_MM_ddFromString(date));
		// 美国星期天为一周第一天（即：国内的本周星期天为美国的下周）
		cal.add(Calendar.DAY_OF_MONTH, 6);
		cal.add(Calendar.DATE, n * 7);
		// 想转星期几， Calendar就引用星期几（星期三：Calendar.WEDNESDAY）
		cal.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);

		try {
			date = getYYYY_MM_ddFromDate(cal.getTime());
		} catch (Exception e) {
			e.printStackTrace();
		}

		return date;
	}

}

 

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