CGlibAgent.java

package common_problem;

import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;

import java.lang.reflect.Method;

public class CGlibAgent implements MethodInterceptor {
 private Object proxy;

 public static void main(String[] args) {
 CGlibAgent cGlibAgent = new CGlibAgent();
 Dog dog = (Dog) cGlibAgent.getInstance(new Dog());
 dog.run();
 }

 public Object getInstance(Object proxy) {
 this.proxy = proxy;
 Enhancer enhancer = new Enhancer();
 enhancer.setSuperclass(proxy.getClass());
 //创建回调对象
 enhancer.setCallback(this);
 return enhancer.create();
 }

 @Override
 public Object intercept(Object o, Method method, Object[] objects, MethodProxy methodProxy) throws Throwable {
 System.out.println("日志织入");
 Object res = methodProxy.invokeSuper(o, objects);
 return res;
 }
}