public interface ITeacherDao {
	void teach(); // 授課的方法
}

public class TeacherDao implements ITeacherDao {
	@Override
	public void teach() {
		System.out.println("一鍵三連");
	}
}

public class TeacherDaoProxy implements ITeacherDao {
	private ITeacherDao target; //通過(guò)接口聚合目標(biāo)對(duì)象
	public TeacherDaoProxy(ITeacherDao target) {
		this.target = target;
	}
	@Override
	public void teach() { //重寫(xiě)接口
		System.out.println("靜態(tài)代理開(kāi)始");
		target.teach();
		System.out.println("靜態(tài)代理結(jié)束");
	}
}

public class Client {
	public static void main(String[] args) {
		//創(chuàng)建被代理對(duì)象
		TeacherDao teacherDao = new TeacherDao();
		//創(chuàng)建代理對(duì)象, 同時(shí)將被代理對(duì)象傳遞給代理對(duì)象
		TeacherDaoProxy teacherDaoProxy = new TeacherDaoProxy(teacherDao);
		//通過(guò)代理對(duì)象，調(diào)用到被代理對(duì)象的方法
		teacherDaoProxy.teach();
	}
}
/*運(yùn)行結(jié)果：
靜態(tài)代理開(kāi)始
一鍵三連
靜態(tài)代理結(jié)束
*/

static Object newProxyInstance(ClassLoader loader, Class<?>[] interfaces,InvocationHandler h )

public interface ITeacherDao {
	void teach();
	void tesst(String name);
}

public class TeacherDao implements ITeacherDao {
	@Override
	public void teach() {
		System.out.println("一鍵三連");
	}
	@Override
	public void tesst(String name) {
		System.out.println("傳參測(cè)試：" + name);
	}
}

public class ProxyFactory {
	//維護(hù)一個(gè)目標(biāo)對(duì)象 , Object
	private Object target;
	//構(gòu)造器 ， 對(duì)target 進(jìn)行初始化
	public ProxyFactory(Object target) {
		this.target = target;
	}
	//動(dòng)態(tài)生成一個(gè)代理對(duì)象
	public Object getProxyInstance() {
		return Proxy.newProxyInstance(target.getClass().getClassLoader(),
				target.getClass().getInterfaces(),
				new InvocationHandler() { //匿名類重寫(xiě)invoke方法
					@Override
					public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
						System.out.println("動(dòng)態(tài)代理開(kāi)始");
						Object returnVal = method.invoke(target, args);//反射機(jī)制調(diào)用目標(biāo)對(duì)象的方法
						System.out.println("動(dòng)態(tài)代理結(jié)束");
						return returnVal;
					}
				});
	}
}

public class Client {
	public static void main(String[] args) {
		//創(chuàng)建目標(biāo)對(duì)象
		ITeacherDao target = new TeacherDao();
		//創(chuàng)建代理對(duì)象
		ITeacherDao proxyInstance = (ITeacherDao)new ProxyFactory(target).getProxyInstance();
		//內(nèi)存中動(dòng)態(tài)生成了代理對(duì)象
		System.out.println(proxyInstance.getClass());
		//通過(guò)代理對(duì)象，調(diào)用目標(biāo)對(duì)象的方法
		proxyInstance.teach();
		proxyInstance.tesst("一鍵三連");
	}
}
/*運(yùn)行結(jié)果：
動(dòng)態(tài)代理開(kāi)始
一鍵三連
動(dòng)態(tài)代理結(jié)束
動(dòng)態(tài)代理開(kāi)始
傳參測(cè)試：一鍵三連
動(dòng)態(tài)代理結(jié)束
*/

public class TeacherDao {
	public String teach() {
		System.out.println("一鍵三連");
		return "好";
	}
}

public class ProxyFactory implements MethodInterceptor {
	//目標(biāo)對(duì)象
	private Object target;
	public ProxyFactory(Object target) {
		this.target = target;
	}
	//返回target對(duì)象的代理對(duì)象
	public Object getProxyInstance() {
		//創(chuàng)建一個(gè)工具類
		Enhancer enhancer = new Enhancer();
		//設(shè)置父類
		enhancer.setSuperclass(target.getClass());
		//設(shè)置回調(diào)函數(shù)
		enhancer.setCallback(this);
		//創(chuàng)建子類對(duì)象，即代理對(duì)象
		return enhancer.create();
	}
	//重寫(xiě)intercept方法，會(huì)調(diào)用目標(biāo)對(duì)象的方法
	@Override
	public Object intercept(Object arg0, Method method, Object[] args, MethodProxy arg3) throws Throwable {
		System.out.println("Cglib代理開(kāi)始");
		Object returnVal = method.invoke(target, args);
		System.out.println("Cglib代理結(jié)束");
		return returnVal;
	}
}

public class Client {
	public static void main(String[] args) {
		//創(chuàng)建目標(biāo)對(duì)象
		TeacherDao target = new TeacherDao();
		//獲取到代理對(duì)象，并且將目標(biāo)對(duì)象傳遞給代理對(duì)象
		TeacherDao proxyInstance = (TeacherDao)new ProxyFactory(target).getProxyInstance();
		//執(zhí)行代理對(duì)象的方法，觸發(fā)intecept 方法，從而實(shí)現(xiàn)對(duì)目標(biāo)對(duì)象的調(diào)用
		proxyInstance.teach();
		System.out.println(res);
	}
}
/*運(yùn)行結(jié)果：
Cglib代理開(kāi)始
一鍵三連
Cglib代理結(jié)束
好
*/