JAVA动态代理实现Demo（JDK动态代理和CGLIB动态代理）

package org.example; import com.sun.org.apache.xerces.internal.impl.xpath.regex.REUtil; import org.springframework.cglib.proxy.Enhancer; import org.springframework.cglib.proxy.MethodInterceptor; import org.springframework.cglib.proxy.MethodProxy; import java.lang.reflect.Method; public class CglibProxy { public static void main(String[] args) { //ProxyClass(); // ProxyClass2(); ProxyInterface(); } public static void ProxyInterface(){ System.out.println("ProxyInterface"); Enhancer enhancer = new Enhancer(); enhancer.setSuperclass(HelloService.class); enhancer.setCallback(new LogInterceptor()); HelloService helloService = (HelloService)enhancer.create(); helloService.sayHello("我是参数"); } public static void ProxyClass2(){ System.out.println("ProxyClass2"); HelloServiceImpl target = new HelloServiceImpl(); Enhancer enhancer = new Enhancer(); enhancer.setSuperclass(target.getClass()); enhancer.setCallback(new LogInterceptor()); HelloServiceImpl helloService = (HelloServiceImpl)enhancer.create(); helloService.sayHello("我是参数"); } public static void ProxyClass(){ System.out.println("ProxyClass"); final HelloServiceImpl target = new HelloServiceImpl(); Enhancer enhancer = new Enhancer(); enhancer.setSuperclass(target.getClass()); enhancer.setCallback(new MethodInterceptor() { @Override public Object intercept(Object o, Method method, Object[] objects, MethodProxy methodProxy) throws Throwable { System.out.println("intercept"); if(method.getName().equals("sayHello")){ System.out.println("before"); method.invoke(target,objects); System.out.println("after"); return null; } return method.invoke(target,objects); } }); HelloServiceImpl helloService = (HelloServiceImpl)enhancer.create(); helloService.sayHello("我是参数"); } }