1、Car.java
package com.ast.cglib.test;
public class Car {
}
2、Truck.java
package com.ast.cglib.test;
public class Truck extends Car{
}
3、MyInterceptor.java
package com.ast.cglib.test;
import java.lang.reflect.Method;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;
public class MyInterceptor implements MethodInterceptor{
@Override
public Object intercept(Object invoker, Method method, Object[] args,
MethodProxy proxy) throws Throwable {
System.out.println("NewCarInterceptor intercept before invoke");
Object result = proxy.invokeSuper(invoker, args);
System.out.println("NewCarInterceptor intercept after invoke");
return result;
}
}
4、MyCallbackFilter.java
package com.ast.cglib.test;
import java.lang.reflect.Method;
import net.sf.cglib.proxy.CallbackFilter;
public class MyCallbackFilter implements CallbackFilter {
public int accept(Method method) {
if (method.getName().equals("NewTruck")) {
return 0;
} else {
return 1;
}
}
}
5、CarFactory.java
package com.ast.cglib.test;
import net.sf.cglib.proxy.Callback;
import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.NoOp;
public class CarFactory{
public Car NewCar()
{
System.out.println("CarFactory NewCar");
return new Car();
}
public Truck NewTruck()
{
System.out.println("CarFactory NewTruck");
return new Truck();
}
public static void EnhancerTest()
{
Callback[] callbacks = new Callback[] {new MyInterceptor(), NoOp.INSTANCE};
Enhancer enhancer = new Enhancer();
enhancer.setSuperclass(CarFactory.class);
enhancer.setCallbacks(callbacks);
enhancer.setCallbackFilter(new MyCallbackFilter());
CarFactory fac = (CarFactory)enhancer.create();
//NoOp
fac.NewCar();
//MyInterceptor
fac.NewTruck();
}
public static void main(String[] args)
{
CarFactory.EnhancerTest();
}
}