策略模式

策略模式

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1.spring serviceLocator 实现

1.建立定位器

@Configuration
@slf4j
public class ServiceLocatorConfig{

    /**
     * 创建一个XXX定位器
     */
    @Bean
    public FactoryBean serviceLocatorFactoryBean(){
        ServiceLocatorFactoryBean serviceLocatorFactoryBean = new ServiceLocatorFactoryBean();
        serviceLocatorFactoryBean.setServiceLocatorInterface(XXXLocator.class);
        return serviceLocatorFactoryBean;
    }

    public interface XXXLocator {

        MessageSendService getMessageSender(String senderType);
    }
}

2.使用

public class Test{
    
    @Autowired
    private  XXXLocator locator;
    public void test(){
        var sender =  locator.getMessageSender("email");
        sender.send();
    }
}

2.springboot 动态注入 如list map等