整理了下最近在項目中使用drools出現的問題，幸好都在開發與測試階段解決了，未波及到prod。

首先看這樣兩條規則

/**
 * 規則1_set默認利率
 */
rule "rate_default"
        no-loop true
    when
        $request:AmountRateRequest(calculateEnum == CalculateEnum.INTEREST || calculateEnum == CalculateEnum.AMOUNT_INTEREST)
        $response:AmountRateResponse(
 
rateMap not contains LoanTermEnum.LOANTERM3)
        $data:DroolsData()
    then
        DroolsClient.logger.debug("{}執行規則{}", $response.getUserId(), drools.getRule().getName());
        $response.getRateMap().put(LoanTermEnum.LOANTERM3, RateFactory.DEFAULT_RATE);
        update($response);
end

 
/**
 * 規則2_set默認利率+萬1
 */
rule "rate_up1"
        no-loop true
    when
        $request:AmountRateRequest(calculateEnum == CalculateEnum.INTEREST || calculateEnum == CalculateEnum.AMOUNT_INTEREST)
        $response:AmountRateResponse(rateMap not contains LoanTermEnum.LOANTERM3)
    then
        DroolsClient.logger.debug(
 
"{}執行規則{}", $response.getUserId(), drools.getRule().getName());
        $response.getRateMap().put(LoanTermEnum.LOANTERM3, Rate);
        update($response);
end

drools規則引擎中易混淆語法分析_循環觸發導致死循環分析