Spring动态调用

1.package com;
2.
3.public interface IComponent {
4.public void  business1() ;
5.public void  business2() ;
6.public void  business3() ;
7.} 

package com; 

1.public class Component implements IComponent{
2.    public void business1() {
3.        System.out.println("业务1");
4.    }
5.
6.    public void business2() {
7.        System.out.println("业务2");
8.    }
9.
10.    public void business3() {
11.        System.out.println("业务3");
12.    }
13.}

package com

1.import java.lang.reflect.InvocationHandler;
2.import java.lang.reflect.Method;
3.import java.lang.reflect.Proxy;
4.
5.public class DynamicProxy implements InvocationHandler {
6.    private Object obj;
7.    //private DynamicProxy p;
8.
9.    public Object bindl(Object obj) {
10.        this.obj = obj;
11.        System.out.println("我是bind*****");
12.    return  Proxy.newProxyInstance(obj.getClass().getClassLoader(), obj
13.                .getClass().getInterfaces(),this);// 用来动态装载invoke方法的
14.        // return new DynamicProxy() ;
15.        //创建代理类  实例化了一个代理类
16.    }
17.
18.    // 动态调用的 不需要手的设置装载
19.    public Object invoke(Object proxy, Method method, Object[] args)
20.            throws Throwable {
21.        // TODO Auto-generated method stub
22.        // System.out.println(proxy.getClass());
23.        // System.out.println(method.getClass());
24.        Object result = null;
25.        try {
26.            valiateUser();
27.            // System.out.println(proxy.getClass());
28.            // System.out.println(args);
29.            // System.out.println(method.getClass());
30.            result = method.invoke(obj,args);// 调用方法 obj
31.            // System.out.println(result);
32.            System.out.println("************");
33.        } catch (Exception e) {
34.            e.printStackTrace();
35.        }
36.        return result;
37.    }
38.
39.    public void valiateUser() {
40.        System.out.println("验证用户。。。。");
41.    }
42.}

package com;

1.public class TestD  {
2.public static void main(String args[]){
3.    DynamicProxy proxy = new DynamicProxy();
4.    IComponent component=(IComponent) proxy.bindl(new Component());
5.    component.business1();//先调用它的invoke方法  再在他的invoke方法里面加载类
6.    component.business2();
7.    component.business3();
8.
9.
10.}
11.}