代理模式
静态代理
public interface Subject {
void request(String var);
}
public class RealSubjectimplements Subject {
@Override
public void request(String var) {
System.out.println("RealSubject="+var);
}
}
public class StaticProxyimplements Subject {
SubjectrealSubject;
public StaticProxy(Subject realSubject) {
this.realSubject = realSubject;
}
//验证参数
public void validParam(String param){
System.out.println("这个参数是正确的"+param);
}
@Override
public void request(String var) {
this.validParam(var);
realSubject.request(var);
}
public static void main(String[] args) {
Subject target =new RealSubject();
Subject proxy =new StaticProxy(target);
proxy.request("请付款");
}
}
