Java dynamic proxies, proxies and Cglib

Java proxies require proxy object implementation interface, Cglib is not required.

So some people say that spring's AOP uses Java proxy for interfaces, otherwise it uses cglib.

Java Proxy

Import Java.lang.reflect.InvocationHandler;
Import Java.lang.reflect.Method;

Import Java.lang.reflect.Proxy;
		public class Proxytest {public static void main (string[] args) {Worker1 w1 = new Worker1 ();
		Workerinvocationhandler handler = new Workerinvocationhandler ();
		Handler.instance = W1; 
		class<?> C = W1.getclass ();
		Worker W = (worker) Proxy.newproxyinstance (C.getclassloader (), C.getinterfaces (), handler);
		W.work ();
		System.out.println ("------------");
		Worker2 W2 = new Worker2 ();
		Handler.instance = W2; 
		c = W2.getclass ();
		W = (Worker) proxy.newproxyinstance (C.getclassloader (), C.getinterfaces (), handler);
	W.work ();

} interface Worker {void work ();}
	Class Worker1 implements Worker {@Override public void work () {System.out.println ("worker1 working ...");
	Class Worker2 implements Worker {@Override public void work () {System.out.println ("worker2 working ..."); } class Workerinvocationhandler implements Invocationhandler {ObjectInstance @Override public Object Invoke (Object Proxy, Method method, object[] args) throws Throwable {System.out.println ("befor
		E invoke ... ");
		Object result = Method.invoke (instance, args);
		System.out.println ("After Invoke ...");
	return result; }
	
}

Cglib

Import Java.lang.reflect.Method;
Import Net.sf.cglib.proxy.Callback;
Import Net.sf.cglib.proxy.CallbackFilter;
Import Net.sf.cglib.proxy.Enhancer;
Import Net.sf.cglib.proxy.MethodInterceptor;
Import Net.sf.cglib.proxy.MethodProxy;

Import net.sf.cglib.proxy.NoOp;
		public class Proxytest {public static void main (string[] args) {String name = ' xx ';
		Factory.getworker (). Work (name);
		Factory.getworker (). x ();
		System.out.println ("--------");
		Cglibproxyfactory.getworker (). Work (name);
	Cglibproxyfactory.getworker (). x ();
	} class Worker {void work (String name) {System.out.println (name + "is working ...");
	} void X () {System.out.println ("xxxx");
	} class Factory {static worker Getworker () {return new worker ();
		} class Cglibproxyfactory {static Worker Getworker () {Enhancer enhancer = new enhancer ();
		Enhancer.setsuperclass (Worker.class);
		Enhancer.setcallbacks (New Callback[]{new cglibproxy (), noop.instance}); Enhancer.setcallbackfilter (New CALLBACKFIlter () {@Override///return callbacks index public int Accept (methods method) {//pair x method does not intercept if (Method.getname (). eq
				Uals ("x")) return 1;
			return 0;
		}
		});
	Return (Worker) (Enhancer.create ()); Class Cglibproxy implements Methodinterceptor {@Override public object intercept (object o, Method M, object[]
		OS, Methodproxy MP) throws Throwable {System.out.println ("before Invoke ...");
		Object result = Mp.invokesuper (o, OS);
		System.out.println ("After Invoke ...");
	return result; }
}