案例: public class BaseManager { private UserService userService; public void setUserService (UserService userService) { this.userService = userService; } protected void doBaseThing() { userService.doUserThing(); } } public class UserManager extends BaseManager{ private UserService userService; public void setUserService (UserService userService) { this.userService = userService; } public void doThings(){ doBaseThing(); } }public class BaseManager { private 你的当前访问异常,请进行认证后继续阅读剩余内容。 提交