//静态代理设计实现
interface UserService {
public void update();
}
class UserImpl implements UserService {
@Override
public void update() {
System.out.println("修改用户..");
}
}
class UserProxy implements UserService {
UserService userService;
public UserProxy(UserService userService) {
this.userService = userService;
}
@Override
public void update() {
//操作之前拓展逻辑
userService.update();
//操作之后拓展逻辑
}
}
运行:
public static void main(String[] args) {
UserProxy proxy = new UserProxy(new UserImpl());
proxy.update();
}
缺点:需要为每个代理类实现接口
Rick
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2020-09-26