8 代理模式（Proxy）

package com.liubo.patterns.proxy;
/**
 * @author liubo
 *
 */
public class Source implements Sourceable {
	public void method() {
		System.out.println("the original method");
	}
}

package com.liubo.patterns.proxy;
/**
 * @author liubo
 *
 */
public class Proxy implements Sourceable {
	private Sourceable source;
	/**
	 * @param source
	 */
	public Proxy(Sourceable source) {
		super();
		this.source = source;
	}
	public void method() {
		before();
		source.method();
		after();
	}
	public void before() {
		System.out.println("before proxy");
	}
	public void after() {
		System.out.println("after proxy");
	}
}

package com.liubo.patterns.proxy;
import org.junit.Test;
/**
 * @author liubo
 *
 */
public class ProxyTest {
	@Test
	public void testProxy() {
		Sourceable source = new Source();
		Sourceable sourceTest = new Proxy(source);
		sourceTest.method();
	}
}