小程序注册教程,东莞网站推广及优化,太平洋手机官网报价大全,做网站宁夏对目标方法实现前置或者后置增强#xff0c; 是在程序动态运行时加入增强方法的。
1. 目标类
package com.lovely.proxy.cglib;/*** 目标类* author echo lovely* date 2020/7/26 15:20*/
public class Target {public void save() {System.out.println(sve running..…对目标方法实现前置或者后置增强 是在程序动态运行时加入增强方法的。
1. 目标类
package com.lovely.proxy.cglib;/*** 目标类* author echo lovely* date 2020/7/26 15:20*/
public class Target {public void save() {System.out.println(sve running...);}
}
2. 增强类
package com.lovely.proxy.cglib;/*** 增强类 拿before和afterReturning对Target中save方法增强* author echo lovely* date 2020/7/26 15:20*/
public class Advice {public void before() {System.out.println(前置增强...);}public void afterReturning() {System.out.println(后置增强...);}}
3. 测试demo
package com.lovely.proxy.cglib;import org.springframework.cglib.proxy.Enhancer;
import org.springframework.cglib.proxy.MethodInterceptor;
import org.springframework.cglib.proxy.MethodProxy;import java.lang.reflect.Method;/*** cglib test* author echo lovely* date 2020/7/26 15:18*/
public class ProxyText {public static void main(String[] args) {// 创建目标类final Target target new Target();// 增强类final Advice advice new Advice();// 1 创建增强器Enhancer enhancer new Enhancer();// 2 设置父类目标类enhancer.setSuperclass(target.getClass());// 3 设置回调enhancer.setCallback(new MethodInterceptor() { // 方法拦截器public Object intercept(Object o, Method method, Object[] objects, MethodProxy methodProxy) throws Throwable {advice.before(); // 方法增强Object returnValue method.invoke(target, objects); // 调用目标方法advice.afterReturning(); // 后置方法return returnValue;}});// 4 创建代理对象Target proxy (Target) enhancer.create();proxy.save();}}
