修改交易密码（原密码判断5次）

    @Override
    public Result updatePayPassword(long userId, String oldPayPwd, String tradePassword)throws MyException {
        //验证新旧密码格式是否正确
        if(!CheckPwd.checkPayPwd(oldPayPwd) || !CheckPwd.checkPayPwd(tradePassword)){
            throw new MyException(ResultEnum.trade_pwd_format_not_true);
        }
        //判断原交易密码是否正确
        String oldPayPwdInDB = appUpdatePayPasswordMapper.findOldPayPwd(userId);
        if(StringUtils.isBlank(oldPayPwdInDB)){
            throw new MyException(ResultEnum.user_is_not_tradepwd);
        }
        //不正确（退出App，返回错误码并重置token）
        if(!oldPayPwdInDB.equals(oldPayPwd)){
            try {
                //查询数据库，修改交易密码时输入交易密码错误次数是否为5次，5次则返回错误码，提示APP退出登录
                byte modifyTradePwdErrorCount = appUpdatePayPasswordMapper.findModifyTradePwdErrorCount(userId);
                if(modifyTradePwdErrorCount==5){
                    throw new MyException(ResultEnum.trade_pwd_not_true_login);
                }
                //更新 修改交易密码时输入交易密码错误次数
                appUpdatePayPasswordMapper.updateModifyTradePwdErrorCount(userId);
            } catch (Exception e) {
                e.printStackTrace();
                throw new MyException(ResultEnum.error_update_failed);
            }
            //提示交易密码错误
            throw new MyException(ResultEnum.trade_pwd_not_true);
        }
        //更新交易密码
        Map<String,Object> c = new HashMap<>();
        c.put("userId",userId);
        c.put("tradePassword",tradePassword);
        try {
            appUpdatePayPasswordMapper.updateNewPaPwd(c);
        } catch (Exception e) {
            e.printStackTrace();
            throw new MyException(ResultEnum.error_update_failed);
        }
        return ResultUtil.success();
    }