先看一下Proxy的兩種用法：
public
?
interface
?Foo?
{
????
int
?doSomthing();
}
???一個基本的實現：
public?class?FooImpl?implements?Foo?{
????public?FooImpl()?{
????}
????public?int?doSomthing()?{
????????System.out.println("FooImpl?doSomthing");
????????return?10;
????}
????
} ???調用處理類，這也是aop的一種實現方式，呵呵。
public?class?MyInvocationHandler?implements?InvocationHandler{
????Object?proxyObject;
????
????public?MyInvocationHandler(Object?_proxyObject)?{
????????this.proxyObject=_proxyObject;
????}
????public?Object?invoke(Object?proxy,?Method?method,?Object[]?args)?throws?Throwable?{
????????System.out.println("in?proxy?instance");
????????return?method.invoke(proxyObject,args);
????}
} ???兩種實現方式：
public?class?ProxyUse?{
????public?ProxyUse()?{
????}
????public?void?useProxy1()?throws?SecurityException,?NoSuchMethodException,?InvocationTargetException,
????????????IllegalArgumentException,?IllegalAccessException,?InstantiationException?{
????????FooImpl?obj?=?new?FooImpl();
????????InvocationHandler?handler?=?new?MyInvocationHandler(obj);
????????Class?proxyClass?=?Proxy.getProxyClass(
????????????????Foo.class.getClassLoader(),?new?Class[]?{Foo.class});
????????Foo?f?=?(Foo)?proxyClass.
????????????????getConstructor(new?Class[]?{InvocationHandler.class}).
????????????????newInstance(new?Object[]?{handler});
????????System.out.println(f.doSomthing());
????}
????
????public?void?useProxy2()?throws?SecurityException,?NoSuchMethodException,?InvocationTargetException,
????????????IllegalArgumentException,?IllegalAccessException,?InstantiationException?{
????????FooImpl?obj?=?new?FooImpl();
????????InvocationHandler?handler?=?new?MyInvocationHandler(obj);
????????Foo?f?=?(Foo)?Proxy.newProxyInstance(
????????????Foo.class.getClassLoader(),
????????????new?Class[]?{?Foo.class?},
????????????handler
????????????);
????????System.out.println(f.doSomthing());
????}
????
????public?static?void?main(String?[]?args){
????????ProxyUse?use=new?ProxyUse();
????????try{
????????????use.useProxy1();
????????????use.useProxy2();
????????}catch(Exception?ex){
????????????ex.printStackTrace();
????????}
????}
} 看一下java api doc
沒時間了，先這樣吧。
?