io.renren.common.utils.DateUtils.java Source code

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Here is the source code for io.renren.common.utils.DateUtils.java

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/**
 * Copyright 2018 ? http://www.renren.io
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package io.renren.common.utils;

import org.apache.commons.lang.StringUtils;
import org.joda.time.DateTime;
import org.joda.time.LocalDate;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;

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

/**
 * ?
 * 
 * @author chenshun
 * @email sunlightcs@gmail.com
 * @date 20161221 ?12:53:33
 */
public class DateUtils {
    /** ?(yyyy-MM-dd) */
    public final static String DATE_PATTERN = "yyyy-MM-dd";
    /** ?(yyyy-MM-dd HH:mm:ss) */
    public final static String DATE_TIME_PATTERN = "yyyy-MM-dd HH:mm:ss";

    /**
     * ? ?yyyy-MM-dd
     * @param date  
     * @return  yyyy-MM-dd?
     */
    public static String format(Date date) {
        return format(date, DATE_PATTERN);
    }

    /**
     * ? ?yyyy-MM-dd
     * @param date  
     * @param pattern  ?DateUtils.DATE_TIME_PATTERN
     * @return  yyyy-MM-dd?
     */
    public static String format(Date date, String pattern) {
        if (date != null) {
            SimpleDateFormat df = new SimpleDateFormat(pattern);
            return df.format(date);
        }
        return null;
    }

    /**
     * ??
     * @param strDate 
     * @param pattern ?DateUtils.DATE_TIME_PATTERN
     */
    public static Date stringToDate(String strDate, String pattern) {
        if (StringUtils.isBlank(strDate)) {
            return null;
        }

        DateTimeFormatter fmt = DateTimeFormat.forPattern(pattern);
        return fmt.parseLocalDateTime(strDate).toDate();
    }

    /**
     * ????
     * @param week    0-1-212
     * @return  date[0]?date[1]?
     */
    public static Date[] getWeekStartAndEnd(int week) {
        DateTime dateTime = new DateTime();
        LocalDate date = new LocalDate(dateTime.plusWeeks(week));

        date = date.dayOfWeek().withMinimumValue();
        Date beginDate = date.toDate();
        Date endDate = date.plusDays(6).toDate();
        return new Date[] { beginDate, endDate };
    }

    /**
     * ?/?
     *
     * @param date 
     * @param seconds ?
     * @return /??
     */
    public static Date addDateSeconds(Date date, int seconds) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusSeconds(seconds).toDate();
    }

    /**
     * ?/?
     *
     * @param date 
     * @param minutes ?
     * @return /??
     */
    public static Date addDateMinutes(Date date, int minutes) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusMinutes(minutes).toDate();
    }

    /**
     * ??/?
     *
     * @param date 
     * @param hours ??
     * @return /???
     */
    public static Date addDateHours(Date date, int hours) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusHours(hours).toDate();
    }

    /**
     * ?/?
     *
     * @param date 
     * @param days ?
     * @return /??
     */
    public static Date addDateDays(Date date, int days) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusDays(days).toDate();
    }

    /**
     * ?/?
     *
     * @param date 
     * @param weeks ?
     * @return /??
     */
    public static Date addDateWeeks(Date date, int weeks) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusWeeks(weeks).toDate();
    }

    /**
     * ?/?
     *
     * @param date 
     * @param months ?
     * @return /??
     */
    public static Date addDateMonths(Date date, int months) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusMonths(months).toDate();
    }

    /**
     * ?/?
     *
     * @param date 
     * @param years ?
     * @return /??
     */
    public static Date addDateYears(Date date, int years) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusYears(years).toDate();
    }
}