Spring 3 @Component 和静态工厂方法

使用Spring 3的@Component注解和静态工厂方法来创建对象是一种方便且灵活的方式。@Component注解用于将一个类标记为一个可被Spring容器管理的组件，并且可以通过自动扫描的方式将其实例化。而静态工厂方法则允许我们在创建对象时进行一些自定义的逻辑处理。

java
import org.springframework.stereotype.Component;
@Component
public class MyComponent {
    // class implementation
}

java
public class MyFactory {
    public static MyComponent createComponent() {
        // custom logic to create MyComponent object
        return new MyComponent();
    }
}

java
import org.springframework.stereotype.Component;
@Component
public class MyComponent {
    // class implementation
}
public class MyFactory {
    public static MyComponent createComponent(String type) {
        if (type.equals("A")) {
            return new MyComponentA();
        } else if (type.equals("B")) {
            return new MyComponentB();
        } else {
            throw new IllegalArgumentException("Invalid component type");
        }
    }
}
public class Main {
    public static void main(String[] args) {
        MyComponent componentA = MyFactory.createComponent("A");
        MyComponent componentB = MyFactory.createComponent("B");
        
        // use the created components
    }
}