阿里巴巴 ali1688 Date +0800的问题

package com.example.testredis.controller;

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

public class TestTime {
    public static void main(String[] args) throws ParseException {

        Date nowDate = new Date();

        DateFormat dateFormat1 = new SimpleDateFormat("yyyyMMddHHmmsszzz");
        System.out.println(dateFormat1.format(nowDate));

        //以后遇到+0800的时间也不用怕了，就是普通的时间
        DateFormat dateFormat2 = new SimpleDateFormat("yyyyMMddHHmmssZZZ");
        System.out.println(dateFormat2.format(nowDate));

        //MM HH 这2个大写是对的
        DateFormat dateFormat3 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        System.out.println(dateFormat3.format(nowDate));

        //mm hh 这2个小写是错的
        DateFormat dateFormat4 = new SimpleDateFormat("yyyy-mm-dd hh:mm:ss");
        System.out.println(dateFormat4.format(nowDate));

        //把+0800转换成正规的毫秒
        DateFormat dateFormat5 = new SimpleDateFormat("yyyyMMddHHmmssZZZ");
        String jia800Date = "20191224211649+0800";
        Date date = dateFormat5.parse(jia800Date);
        System.out.println(dateFormat3.format(date));

        //转换阿里巴巴的时间，大写SS是毫秒，阿里巴巴的是毫秒
        String ali1688Date = "20200619150904000+0800";
        ali1688Date = ali1688Date.substring(0, ali1688Date.length()-8);
        System.out.println(ali1688Date);
        DateFormat dateFormat6 = new SimpleDateFormat("yyyyMMddHHmmss");
        Date abc = dateFormat6.parse(ali1688Date);
        System.out.println(dateFormat3.format(abc));
    }
}

public class TestAliDate {
    public static void main(String[] args) throws ParseException {
        DateFormat dateFormat = new SimpleDateFormat("yyyyMMddHHmmssSSSZ");
        Date wokao = dateFormat.parse("20120801154220368+0800");

        DateFormat dateFormat1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        System.out.println(dateFormat1.format(wokao));

        //结果为：2012-08-01 15:42:20

    }
}