Class Proxy  implements InvocationHandler{
Object tar =null;
public Object  bid(Object tar){
this.tar=tar;
return Proxy.newProxyInstance(tar.getClass().getClassLoader(),tar.getClass.getInterfaces,this);
}
//重写Invoke  方法
public Object invoke(Object proxy,Method method,Object[] args) throws throwable{
Object result=null;
result=method.invoke(tar,args);
return result;
}

}