日期工具类

package com.tigeriot.mqtt.util;

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


public class DateUtils {

    public final static  String dateFormat ="yyyy-MM-dd HH:mm:ss";


    public static String dateToString(Date date){

        return dateToString(date,dateFormat);

    }



    public static String dateToString(Date date,String patten){


        String format = null;
        try {
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat(patten);
            format = simpleDateFormat.format(date);
        } catch (Exception e) {
            System.out.println("日期解析字符串失败");
        }

        return format;

    }


    public static Date stringToDate(String str){

        return stringToDate(str,dateFormat);

    }
    public static Date stringToDate(String str,String patten){

        Date parse = null;
        try {
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat(patten);
          parse = simpleDateFormat.parse(str);
        } catch (ParseException e) {
            System.out.println("字符串解析日期失败");
        }

        return parse;

    }





}

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