装饰者模式的另一种思路

  • Z时代
  • 2024-01-10
  • 分类：综合

编程

/**
 * @Auther: penghaozhong
 * @Date: 2020-05-21 15:53
 */
public interface Test {
    String say(String name);
}
public class Test1 implements Test {
    private Test test;
    public Test1(Test test) {
        this.test = test;
    }
    @Override
    public String say(String name) {
        System.out.println("Test1");
        return test.say(name);
    }
}
public class Test2 implements Test {
    private Test test;
    public Test2(Test test) {
        this.test = test;
    }
    @Override
    public String say(String name) {
        System.out.println("Test2");
        return test.say(name);
    }
}
public class Test3 implements Test {
    private Test test;
    public Test3(Test test) {
        this.test = test;
    }
    @Override
    public String say(String name) {
        System.out.println("Test3");
        return test.say(name);
    }
}
public class TestA implements Test {
    @Override
    public String say(String name) {
        return "TestA-" + name;
    }
}
public class TestMain {
    public static void main(String[] args) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException {
        Set<Class<?>> wrapperClasses = Sets.newHashSet(Test1.class,Test2.class,Test3.class);
        Test instance = new TestA();
        if (CollectionUtils.isNotEmpty(wrapperClasses)) {
            for (Class<?> wrapperClass : wrapperClasses) {
                instance = (Test)wrapperClass.getConstructor(Test.class).newInstance(instance);
            }
        }
        String heihe = instance.say("heihe");
        System.out.println(heihe);
    }
}

输出结果

 

 

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