帮我优化这段代码结构 //不提示顺序 if (accountExt.getRemainEcpm() <= (amountCpm + withdrawOrderCpmCfg.getIntStart())) { //提现顺序 if (WithdrawOrderSwitchEnum.GLOBAL_LIMIT.getCode() == withdrawOrderSwitch) { Integer withdrawOrderCpm = withdrawOrderCpmCfg.getIntVal(); if (Integer.parseInt(accountExt.getFirstEcpm()) >= withdrawOrderCpm) { //针对1元以上 if (cfgWithdraw.getAmount().compareTo(new BigDecimal("1")) >= 0) { throw new ApiBusinessException(ErrorCodeEnum.ERROR_DEFAULT.getCode(), "请按顺序提现哦~"); } }else { //有价值用户 if (accountExt.getRemainEcpm() <= amountCpm && cfgWithdraw.getAmount().compareTo(new BigDecimal("0.3")) > 0) { //是否有其他挡位 if (checkOtherTap(accountExt, cfgWithdraw)) { throw new ApiBusinessException(ErrorCodeEnum.ERROR_DEFAULT.getCode(), "请按顺序提现哦~"); } } } }else if (WithdrawOrderSwitchEnum.ORDER_LIMIT.getCode() == withdrawOrderSwitch) { if (checkOtherTap(accountExt, cfgWithdraw)) { throw new ApiBusinessException(ErrorCodeEnum.ERROR_DEFAULT.getCode(), "请按顺序提现哦~"); } } }

以下是对代码结构的优化建议：

1. 抽取方法：将 if 块内的代码块抽取成一个独立的方法，提高代码的可读性和可维护性。

2. 提取变量：将常量字符串和数字提取成变量，方便后续修改和维护。

3. 优化条件判断顺序：将条件判断中易先满足的条件放在前面，提高代码执行效率。

4. 减少嵌套：使用 continue 或者 return 来减少 if 嵌套，提高代码的可读性。

下面是经过优化后的代码结构：

// 抽取方法
private void checkWithdrawOrder(AccountExt accountExt, WithdrawCfg cfgWithdraw, BigDecimal amountCpm) {
    WithdrawOrderCpmCfg withdrawOrderCpmCfg = withdrawOrderCpmCfgMapper.selectByAppId(accountExt.getAppId());
    Integer withdrawOrderSwitch = withdrawOrderCpmCfg.getWithdrawOrderSwitch();

    BigDecimal minWithdrawAmount = new BigDecimal("0.3");
    int startWithdrawCpm = withdrawOrderCpmCfg.getIntStart();
    int withdrawCpm = withdrawOrderCpmCfg.getIntVal();

    if (accountExt.getRemainEcpm() <= (amountCpm + startWithdrawCpm)) {
        if (WithdrawOrderSwitchEnum.GLOBAL_LIMIT.getCode() == withdrawOrderSwitch) {
            if (Integer.parseInt(accountExt.getFirstEcpm()) >= withdrawCpm) {
                if (cfgWithdraw.getAmount().compareTo(new BigDecimal("1")) >= 0) {
                    throw new ApiBusinessException(ErrorCodeEnum.ERROR_DEFAULT.getCode(), "请按顺序提现哦~");
                }
                return;
            }
            if (accountExt.getRemainEcpm() <= amountCpm && cfgWithdraw.getAmount().compareTo(minWithdrawAmount) > 0) {
                if (checkOtherTap(accountExt, cfgWithdraw)) {
                    throw new ApiBusinessException(ErrorCodeEnum.ERROR_DEFAULT.getCode(), "请按顺序提现哦~");
                }
            }
        } else if (WithdrawOrderSwitchEnum.ORDER_LIMIT.getCode() == withdrawOrderSwitch) {
            if (checkOtherTap(accountExt, cfgWithdraw)) {
                throw new ApiBusinessException(ErrorCodeEnum.ERROR_DEFAULT.getCode(), "请按顺序提现哦~");
            }
        }
    }
}

在实际使用时，你只需要调用新的方法 checkWithdrawOrder()，并传入对应的参数即可。