java时间格式转换任意格式

java时间格式转换任意格式

例如：20180918/120023转换成2018-09-18 12:00:23

    //时间格式转换

    public String getNomalTime(String oldTime){

        String newTime = "";

        if(StringUtils.isNotBlank(oldTime)){

            String reg = "(\\d{4})(\\d{2})(\\d{2})(\\d{2})(\\d{2})(\\d{2})";

            newTime = oldTime.replace("/","").replaceAll(reg, "$1-$2-$3T$4:$5:$6");

        }

        return  newTime;

    }