huimv.farm.v2/huimv-farm-v2/huimv-produce-warning/src/main/java/com/huimv/produce/utils/DateUtil.java

package com.huimv.produce.utils;

import cn.hutool.core.date.DateTime;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;

/**
 * @Project : huimv.shiwan
 * @Package : com.huimv.biosafety.uface.controller
 * @Description : TODO
 * @Version : 1.0
 * @Author : ZhuoNing
 * @Create : 2020-12-25
 **/
@Component
@Slf4j
public class DateUtil {
    /**
     * 获取今天
     * @return String
     * */
    public String getToday(){
        return new SimpleDateFormat("yyyy-MM-dd").format(new Date());
    }
    /**
     * 获取昨天
     * @return String
     * */
    public String getYestoday(){
        Calendar cal=Calendar.getInstance();
        cal.add(Calendar.DATE,-1);
        Date time=cal.getTime();
        return new SimpleDateFormat("yyyy-MM-dd").format(time);
    }
    /**
     * 获取本月开始日期
     * @return String
     * **/
    public String getMonthStart(){
        Calendar cal=Calendar.getInstance();
        cal.add(Calendar.MONTH, 0);
        cal.set(Calendar.DAY_OF_MONTH, 1);
        Date time=cal.getTime();
        return new SimpleDateFormat("yyyy-MM-dd").format(time);
    }
    /**
     * 获取本月最后一天
     * @return String
     * **/
    public String getMonthEnd(){
        Calendar cal=Calendar.getInstance();
        cal.set(Calendar.DAY_OF_MONTH, cal.getActualMaximum(Calendar.DAY_OF_MONTH));
        Date time=cal.getTime();
        return new SimpleDateFormat("yyyy-MM-dd").format(time);
    }
    /**
     * 获取本周的第一天
     * @return String
     * **/
    public String getWeekStart(){
        Calendar cal=Calendar.getInstance();
        cal.add(Calendar.WEEK_OF_MONTH, 0);
        cal.set(Calendar.DAY_OF_WEEK, 2);
        Date time=cal.getTime();
        return new SimpleDateFormat("yyyy-MM-dd").format(time);
    }
    /**
     * 获取本周的最后一天
     * @return String
     * **/
    public String getWeekEnd(){
        Calendar cal=Calendar.getInstance();
        cal.set(Calendar.DAY_OF_WEEK, cal.getActualMaximum(Calendar.DAY_OF_WEEK));
        cal.add(Calendar.DAY_OF_WEEK, 1);
        Date time=cal.getTime();
        return new SimpleDateFormat("yyyy-MM-dd").format(time);
    }
    /**
     * 获取本年的第一天
     * @return String
     * **/
    public String getYearStart(){
        return new SimpleDateFormat("yyyy").format(new Date())+"-01-01";
    }

    /**
     * 获取本年的最后一天
     * @return String
     * **/
    public String getYearEnd(){
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.MONTH,calendar.getActualMaximum(Calendar.MONTH));
        calendar.set(Calendar.DAY_OF_MONTH,calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
        Date currYearLast = calendar.getTime();
        return new SimpleDateFormat("yyyy-MM-dd").format(currYearLast);
    }

    //Long转换为Date格式
    public String fromLongToDate(Long time ,String format) {
        SimpleDateFormat sdf = new SimpleDateFormat(format);
        Date date = new Date(time);
        return sdf.format(date);
    }

    public String formatTimestampToDatetime(Timestamp timestamp){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        return sdf.format(timestamp);
    }

    public String formatTimestampToDate(Timestamp timestamp){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        return sdf.format(timestamp);
    }

    //格式化本年
    public String getThisYear(){
        Calendar cal = Calendar.getInstance();
        int year = cal.get(Calendar.YEAR);
        return String.valueOf(year);
    }

    //格式化本月
    public String getThisMonth(){
        Calendar cal = Calendar.getInstance();
        int month = cal.get(Calendar.MONTH) + 1;
        if(String.valueOf(month).length()==1)
        {
            return "0"+String.valueOf(month);
        }else{
            return String.valueOf(month);
        }
    }

    //格式化日期时间
    public String formatDateTime(String dateText) throws ParseException {
        if(dateText.indexOf("T") != -1){
            dateText = dateText.replace("T"," ");
        }
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = sdf.parse(dateText);
        return sdf.format(date);
    }

    public String formatDateText(String dateText) throws ParseException {
        if(dateText.indexOf("T") != -1){
            dateText = dateText.replace("T"," ");
        }
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        Date date = sdf.parse(dateText);
        return sdf.format(date);
    }

    public String formatDateText(Date date) throws ParseException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        return sdf.format(date);
    }

    public Date parseDateTime(String dateText) throws ParseException {
        if(dateText.indexOf("T") != -1){
            dateText = dateText.replace("T"," ");
        }
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        return sdf.parse(dateText);
    }

    public Date parseDate(String dateText) throws ParseException {
        if(dateText.indexOf("T") != -1){
            dateText = dateText.replace("T"," ");
        }
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        return sdf.parse(dateText);
    }

    public Date parseDate2(String dateText) throws ParseException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        return sdf.parse(dateText);
    }

    public Long parseDateTimeLong(String dateText) throws ParseException {
        if(dateText.indexOf("T") != -1){
            dateText = dateText.replace("T"," ");
        }
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = sdf.parse(dateText);
        return date.getTime();
    }



    //
    public Date getTodayDate() throws ParseException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        return sdf.parse(sdf.format(new Date()));
    }

    public String getTodayDateText() throws ParseException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        return sdf.format(new Date());
    }

    public String getTodayText() throws ParseException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        return sdf.format(new Date());
    }

    public String getTodayMissionText() throws ParseException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
        return sdf.format(new Date());
    }

    public String getStartDateInThisMonth(){
        DateTime date = cn.hutool.core.date.DateUtil.date();
        return (cn.hutool.core.date.DateUtil.beginOfMonth(date) + "").substring(0, 10);
    }

    public String getEndDateInThisMonth(){
        DateTime date = cn.hutool.core.date.DateUtil.date();
        return (date + "").substring(0, 10);
    }

    /**
     * 获取过去或者未来 任意天内的日期数组
     * @param intervals      intervals天内
     * @return              日期数组
     */
    public ArrayList<String> test(int intervals ) {
        ArrayList<String> pastDaysList = new ArrayList<>();
        ArrayList<String> fetureDaysList = new ArrayList<>();
        for (int i = 0; i <intervals; i++) {
            pastDaysList.add(getPastDate(i));
            fetureDaysList.add(getFetureDate(i));
        }
        return pastDaysList;
    }

    /**
     * 获取过去第几天的日期
     *
     * @param past
     * @return
     */
    public String getPastDate(int past) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.DAY_OF_YEAR, calendar.get(Calendar.DAY_OF_YEAR) - past);
        Date today = calendar.getTime();
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        String result = format.format(today);
        return result;
    }

    /**
     * 获取未来 第 past 天的日期
     * @param past
     * @return
     */
    public String getFetureDate(int past) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.DAY_OF_YEAR, calendar.get(Calendar.DAY_OF_YEAR) + past);
        Date today = calendar.getTime();
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        String result = format.format(today);
        return result;
    }

    //重新构建日期
    public String rebuildDateTime(String text){
        return text.substring(0,4)+"-"+text.substring(4,6)+"-"+text.substring(6,8)+" "+text.substring(8,10)+":"+text.substring(10,12)+":"+text.substring(12,14);
    }

    public static void main(String[] args){
        DateUtil du = new DateUtil();
        //
        du.test1();
    }

    private void test1() {
        String text = "20211201104300";
//        String text = "1234567890abcd";
        String date = text.substring(0,4)+"-"+text.substring(4,6)+"-"+text.substring(6,8)+" "+text.substring(8,10)+":"+text.substring(10,12)+":"+text.substring(12,14);
        System.out.println("date="+date);
    }
}