我们通常不跟踪布尔变量的状态，而是根据肯定条件执行一些操作：

public Response getUserData(User user){
    if (isUserAuthorized()) {
        // actions that should happen only when authorized
    } else {
        // actions that should happen only when NOT authorized 
    }
}

但是如果你真的想跟踪那个状态，你可以在方法调用结束时将变量设置为false：

//check if user is authorized
isAuthorized = isUserAuthorized()?true:false;
//perform other things based on above boolean
isAuthorized = false;
return someResponse;

注意：这可能会导致与并发性相关的问题，但如果这与您无关，也没有什么坏处。

如果你想为所有的API方法调用一个业务逻辑方法，你需要使用一个web HandlerInterceptor，例如：

@Component
public class AppInterceptor implements HandlerInterceptor {

    private static Logger logger = LoggerFactory.getLogger(AppInterceptor.class);

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        var authorized = UserIsAuthorizedDummy(); // <- you business logic here
        request.setAttribute("is_authorized", authorized);
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {}

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception exception) {}

    private boolean UserIsAuthorizedDummy() {
        return true;
    }
}

并使用WebMvcConfigurer实现配置此拦截器，例如：

@Configuration
public class AppConfig implements WebMvcConfigurer {
    @Autowired
    AppInterceptor appInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(appInterceptor);
    }
}

然后你可以在你的控制器方法中使用它，你将看到并访问来自请求对象的is_authorized属性。示例：

@GetMapping("/user")
    public LocalResponse getUser(HttpServletRequest request) {
        var response = new LocalResponse();
        // check AppInterceptor.preHandle() to see when "is_authorized" attribute is set
        response.setAuthorized((boolean) request.getAttribute("is_authorized"));

        if (response.isAuthorized()) {
            response.setUserId("1111");
        }

        return response;
    }

    @GetMapping("/profile")
    public LocalResponse getProfile(HttpServletRequest request) {
        var response = new LocalResponse();
        // check AppInterceptor.preHandle() to see when "is_authorized" attribute is set
        response.setAuthorized((boolean) request.getAttribute("is_authorized"));

        if (response.isAuthorized()) {
            response.setUserId("1111-22222");
        }

        return response;
    }

您可以在以下存储库中看到一个工作示例：https://github.com/eriknyk/springboot-web-interceptor-demo/