Spring 5 WebFlux 中的拦截器

Spring 5 WebFlux中的拦截器是一种强大的功能，可以在请求到达控制器之前或之后执行一些处理逻辑。拦截器可以用于实现日志记录、权限验证、参数预处理等功能。在本文中，我们将探讨Spring 5 WebFlux中的拦截器的使用方法，并通过一个案例代码来演示其具体实现。

java
@Component
public class RequestLoggingInterceptor implements HandlerInterceptor {
    private static final Logger logger = LoggerFactory.getLogger(RequestLoggingInterceptor.class);
    @Override
    public boolean preHandle(ServerHttpRequest request, ServerHttpResponse response, Object handler) throws Exception {
        logger.info("Request URL: {}", request.getURI());
        return true;
    }
    @Override
    public void postHandle(ServerHttpRequest request, ServerHttpResponse response, Object handler, @Nullable ModelAndView modelAndView) throws Exception {
        // Do nothing
    }
    @Override
    public void afterCompletion(ServerHttpRequest request, ServerHttpResponse response, Object handler, @Nullable Exception ex) throws Exception {
        // Do nothing
    }
}

java
@Configuration
public class WebConfig implements WebFluxConfigurer {
    @Autowired
    private RequestLoggingInterceptor requestLoggingInterceptor;
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(requestLoggingInterceptor);
    }
}