/**
     *@Description:日期轉換，將介面返回的20180524轉為2018-05-24
     *@param str 傳遞的日期字串
     */
    private static String dateConvertion(String str) {
        Date parse = null;
        String dateString = "";
        try {
            parse = new SimpleDateFormat("yyyyMMdd").parse(str);
            dateString 
 
= new SimpleDateFormat("yyyy-MM-dd").format(parse);
        } catch (ParseException e) {
            dateString=null;
        }
        
        return dateString;
    }

/**
     *@Description:日期轉換，將yyyy-MM-dd轉為yyyyMMdd
     *@param str 傳遞的日期字串
     */
    private static String StringToDate(String str) {
        Date parse 
 
= null;
        String dateString = "";
        try {
            parse=new SimpleDateFormat("yyyy-MM-dd").parse(str);
            dateString = new SimpleDateFormat("yyyyMMdd").format(parse);
        } catch (ParseException e) {
            dateString=null;
        }
        return dateString;
    }