代理全家福全家福代理
/**
* 挣钱
*/
public interface MakeMoney {
void makeMoney();
}
public class Boss implements MakeMoney {
@Override
public void makeMoney() {
System.out.println("老板想挣钱");
}
}
public class Employee implements MakeMoney {
private MakeMoney boss;
public Employee(MakeMoney boss) {
this.boss = boss;
}
@Override
public void makeMoney() {
System.out.println("员工在干活");
boss.makeMoney();
}
}
public class Employee implements InvocationHandler {
private MakeMoney boss;
public Employee(MakeMoney boss) {
this.boss = boss;
}
public MakeMoney proxy() {
return (MakeMoney) Proxy.newProxyInstance(boss.getClass().getClassLoader(), boss.getClass().getInterfaces(),
this);
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
System.out.println("员工干活");
return method.invoke(boss, args);
}
}
CGLib
public class MakeMoneyImpl implements MethodInterceptor { private MakeMoney target; public MakeMoney getInstance(MakeMoney target) { this.target = target; Enhancer enhancer = new Enhancer(); enhancer.setSuperclass(target.getClass()); enhancer.setCallback(this); return (MakeMoney) enhancer.create(); } @Override public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable { System.out.println("员工在干活"); proxy.invokeSuper(obj, args); return null; } }