Java设计模式之策略模式实践

1、策略接口

/**
 * 策略接口
 */
public interface DemoStrategy {
    Result execute();
}

2、策略工厂

/**
 * 策略工厂
 */
@Component
public class DemoFactory {
    @Resource
    private final Map<String, DemoStrategy> demoStrategy= new ConcurrentHashMap<>();

    public DemoStrategy doStrategy(String data){
        return this.demoStrategy.get(data);
    }
}

3、策略实现类

/**
 * 策略实现类
 */
@Component("dataName")
public class DataNameImpl implements DemoStrategy {
    
    @Override
    public Result execute() {
        //do something
        return null;
    }
}

4、调用Demo

// class 

@Resource
private DemoFactory demoFactory ;

//method 

String dataName= "dataName";
                
return demoFactory.doStrategy(dataName).execute();