SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

 //设置用户名并进行时间转换

        for (int i = 0; i < purchasedFundsList.size() ; i++) {

            purchasedFundsList.get(i).setUserName(userName);

            purchasedFundsList.get(i).setCreateTime(sdf.format(purchasedFundsList.get(i).getCreateTime()));

        }

    /**

     * 将字符串时间格式转换成Date时间格式，参数String类型

     * 比如字符串时间："2017-12-15 21:49:03"

     * 转换后的date时间：Fri Dec 15 21:49:03 CST 2017

     * @param datetime 类型为String

     * @return

     */

    public static Date StringToDate(String datetime){

        SimpleDateFormat sdFormat=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        Date date = new Date();

        try {

            date = sdFormat.parse(datetime);

        } catch (ParseException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        return date;

    }