Spring Boot:在RestController中访问拦截器数据

public class MyInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 获取需要的数据
        String data = "拦截器数据";
        // 存储到请求的属性中
        request.setAttribute("data", data);
        return true;
    }
}

@Configuration
public class AppConfig extends WebMvcConfigurerAdapter {
    @Autowired
    private MyInterceptor myInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        // 注册拦截器
        registry.addInterceptor(myInterceptor);
    }
}

@RestController
public class MyController {
    @GetMapping("/data")
    public String getData(HttpServletRequest request) {
        // 获取拦截器数据
        String data = (String) request.getAttribute("data");
        return data;
    }
}