相似业务不同渠道对应服务实现类的另一种获取方式

 

 多例注入就有多个用list接收，然后根据实现类中的渠道代码特征匹配传进来的渠道代码也可实现类似动态反射获取不同渠道的server实现类（借助数据库存储实现类和渠道的关系）一样的效果，但是这种有一定的弊端：即只允许一个渠道业务只有一个类实现着个接口，一旦有多个那么这个渠道业务永远只用无最先匹配到的哪个实现类（不同的业务用不同的接口，每个接口一个渠道就是一个实现类即可解决）。一般用数据库存储渠道和对应服务类的关系也是一个功能一个实现类

 

 

 

 

 

 @Autowired

    private List<LoanCallbackService> loanCallbackServices;    多例注入就有多个用list接收

 

 

 

    @Service

public class WFLoanCallbackServiceImpl implements LoanCallbackService

 

@Service

public class TbjLoanCallbackServiceImpl implements LoanCallbackService 

 

 

 

@Service

public class LoanCallbackFacadeServiceImpl implements LoanCallbackFacadeService {

 

    @Autowired

    private List<LoanCallbackService> loanCallbackServices;

 

    public LoanCallbackService determineTargetService(AppOfferLoanTask offerLoanTask) {

        OfferLoanChannelEnums offerLoanChannelEnums = OfferLoanChannelEnums.findCode(offerLoanTask.getFundChannel());

        for (LoanCallbackService loanCallbackService : loanCallbackServices) {

            if (loanCallbackService.getOfferLoanChannelEnum().equals(offerLoanChannelEnums)) {

                return loanCallbackService;

            }

        }

        throw new RuntimeException("找不到" + offerLoanChannelEnums + "对应的[LoanCallbackService]");

    }

 

    @Override

    public void offerLoanCallback(BankApiResultModel callbackContent, AppOfferLoanTask offerLoanTask) {

        determineTargetService(offerLoanTask).offerLoanCallback(callbackContent, offerLoanTask);

    }

}