动态代理模式——客户相亲，婚介所代理

谁践踏了优雅 2021-07-24 18:02 222阅读 0赞

**一 Person**

package Jdkproxy;
    
    public interface Person {
        public void findLove();
    }

**二 Customer**

package Jdkproxy;
    
    public class Customer implements Person{
        public void findLove(){
            System.out.println("高富帅");
            System.out.println("身高180cm");
            System.out.println("有6块腹肌");
        }
    }

**三  JDKMeipo**

package Jdkproxy;
    
    import java.lang.reflect.InvocationHandler;
    import java.lang.reflect.Method;
    import java.lang.reflect.Proxy;
    
    public class JDKMeipo implements InvocationHandler{
        // 被代理的对象，把引用保存下来
        private Object target;
    
        public Object getInstance(Object target) throws Exception{
            this.target = target;
            Class<?> clazz = target.getClass();
            return Proxy.newProxyInstance(clazz.getClassLoader(),clazz.getInterfaces(),this);
        }
    
        public Object invoke( Object proxy, Method method, Object[] args ) throws Throwable{
            before();
            Object obj = method.invoke(this.target,args);
            after();
            return obj;
        }
    
        private void before(){
            System.out.println("我是媒婆：我给你找对象，现在已经确认你的需求");
            System.out.println("开始物色");
        }
    
        private void after(){
            System.out.println("如果合适的话，就准备办事");
        }
    }

**四 Test**

package Jdkproxy;
    
    
    public class Test {
        public static void main(String[] args){
            try {
                Person obj = (Person)new JDKMeipo().getInstance(new Customer());
                obj.findLove();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

**五 代码位置**

[https://gitee.com/cakin24/javatest/tree/master/src/main/java/Jdkproxy][https_gitee.com_cakin24_javatest_tree_master_src_main_java_Jdkproxy]

**六 测试**

我是媒婆：我给你找对象，现在已经确认你的需求
    开始物色
    高富帅
    身高180cm
    有6块腹肌
    如果合适的话，就准备办事

[https_gitee.com_cakin24_javatest_tree_master_src_main_java_Jdkproxy]: https://gitee.com/cakin24/javatest/tree/master/src/main/java/Jdkproxy