public class 时间转换 {
    /**
     * CSt 转换日期格式
     * @param cstTime
     * @return
     */

    public static void main(String[] args) {
        String time="Wed Jun 02 17:53:31 CST 2021";
        try{
            String time1 = cstTurnTime(time);
            System.out.println(time1);
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    public  static  String cstTurnTime (String cstTime) throws  Exception{
        if(cstTime==null ){
            return null;
        }
        SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.US);
        Date date = (Date) sdf.parse(cstTime);
        String formatStr2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(date);
        return  formatStr2;
    }
}