package enhancerTest;
/**
 * Created by LiuSuSu on 2017/3/26.
 */
public class UserService {
    public void doxx(){
        System.out.println("do...");
    }
}

package enhancerTest;
import org.springframework.cglib.proxy.MethodInterceptor;
import org.springframework.cglib.proxy.MethodProxy;
import java.lang.reflect.Method;
/**
 * Created by LiuSuSu on 2017/3/26.
 */
public class CglibCallBackUserService implements MethodInterceptor {
    /**
     * cglib调用的
     *
     * @param o           调用对象
     * @param method      调用的方法
     * @param args        参数
     * @param methodProxy 代理的方法
     * @return
     * @throws Throwable
     */
    @Override
    public Object intercept(Object o, Method method, Object[] args, MethodProxy methodProxy) throws Throwable {
        System.out.println("before " + method.getName());
        //注意invoke代理的是自己，这是一个递归，死循环
        //Object obj= methodProxy.invoke(o, args);
        Object obj = methodProxy.invokeSuper(o, args);
        System.out.println("after " + method.getName());
        return obj;
    }
}

package enhancerTest;
import org.springframework.cglib.proxy.Enhancer;
/**
 * Created by LiuSuSu on 2017/3/26.
 */
public class EnhanceTest {
    public static void main(String[] args) {
        Enhancer enhancer = new Enhancer();
        enhancer.setSuperclass(UserService.class);
        enhancer.setCallback(new CglibCallBackUserService());
        UserService service = (UserService) enhancer.create();
        service.doxx();
        System.out.println("over");
    }
}