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强化网站建设和管理东莞企业建站程序

news 2025/10/31 9:55:52

强化网站建设和管理,东莞企业建站程序,注册网站会员,个人开发微信平台集合spring框架的是策略模式，直接上代码 1、接口 public interface PaymentStrategy {//支付接口void pay(double amount);}2、实现类 2.1 实现类一 Component("creditCard") //作为区分的标识 public class CreditCardPayment implements PaymentStr…

集合spring框架的是策略模式，直接上代码

1、接口

public interface PaymentStrategy {//支付接口void pay(double amount);}

2、实现类

2.1 实现类一

@Component("creditCard") //作为区分的标识
public class CreditCardPayment implements PaymentStrategy {//实现接口//重写的接口@Overridepublic void pay(double amount) {System.out.println("Paid " + amount + " using Credit Card.");}}

2.2 实现类一

@Component("creditCard") //作为区分的标识
public class PayPalPayment implements PaymentStrategy {//实现接口//重写的接口@Overridepublic void pay(double amount) {System.out.println("Paid " + amount + " using PayPal.");}}

3、工厂方法

//工厂方法
@Component
public class PaymentStrategyFactory {private final Map<String, PaymentStrategy> strategies;//自动字数管理映射@Autowiredpublic PaymentStrategyFactory(Map<String, PaymentStrategy> strategies) {this.strategies = strategies;}//根据实现类的bean获取对应的实例public PaymentStrategy getStrategy(String strategyName) {return strategies.get(strategyName);}
}

4、应用层

    //  依赖注入private final PaymentStrategyFactory paymentStrategyFactory;@Autowiredpublic LocalTest(PaymentStrategyFactory paymentStrategyFactory) {this.paymentStrategyFactory = paymentStrategyFactory;}@GetMapping("strategyTest")public String strategyTest(@RequestParam(value = "method") String method, @RequestParam(value = "amount") double amount) throws IOException {//获取对应的实例PaymentStrategy strategy = paymentStrategyFactory.getStrategy(method);if (strategy == null) {throw new RemoteException("Unknown payment method: "+method);}//运行strategy.pay(amount);return "Payment successful!";}