AOP test

SPRING_SETTING/spring

AOP test - 2

우혁이 아빠 2010. 11. 12. 15:46

1. Proxy라는 넘을 이용해서 해보는 방법.

public class UppercaseHandler implements InvocationHandler {
		
		Object target;
		
		private UppercaseHandler(Object target) {
			this.target = target;
		}
		
		@Override
		public Object invoke(Object proxy, Method method, Object[] args)
		throws Throwable {
			Object ret = method.invoke(target, args);
			if (ret instanceof String && method.getName().startsWith("say")) {
				return ((String) ret).toUpperCase();
			} else {
				return ret;
			}
		}
		
	}

@Test
	public void simpleProxy() throws Exception {
		Hello hello = new HelloTarget();
		
		assertThat(hello.sayHello(name), is("Hello Tazz"));
		assertThat(hello.sayHi(name), is("Hi Tazz"));
		assertThat(hello.sayThankYou(name), is("Thank You Tazz"));
		
		Hello proxiedHello = (Hello) Proxy.newProxyInstance(
				getClass().getClassLoader(), 
				new Class[]{ Hello.class }, 
				new UppercaseHandler(new HelloTarget())
		);
				
		assertThat(proxiedHello.sayHello(name), is("HELLO TAZZ"));
		assertThat(proxiedHello.sayHi(name), is("HI TAZZ"));
		assertThat(proxiedHello.sayThankYou(name), is("THANK YOU TAZZ"));
	}

토비의 스프링 3.0으로 공부 중입니다. 정말 괜찮은 책이네요!!! 강추!!!

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