cglib.png
通过继承实现动态代理
image.png
/**
* @param obj "this", the enhanced object
* @param method intercepted Method
* @param args argument array; primitive types are wrapped
* @param proxy used to invoke super (non-intercepted method); may be called
**/
public class DemoMethodInterceptor implements MethodInterceptor{
@Override
public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
System.out.println("before in cglib");
Object result = null;
try{
result = proxy.invokeSuper(obj, args);
}catch (Exception e){
System.out.println("get ex:"+e.getMessage());
throw e;
}finally {
System.out.println("after in cglib");
}
return result;
}
}
客户端代码：
public class Client {
public static void main(String[] args){
Enhancer enhancer = new Enhancer();
enhancer.setSuperclass(RealSubject.class);
enhancer.setCallback(new DemoMethodInterceptor());
Subject subject = (Subject) enhancer.create();
subject.hello();
}
}
image.png
