一、新增拦截器配置类

@Configurationpublic class WebAppInterceptorConfig extends WebMvcConfigurerAdapter {    /**     * 拦截器链（多个拦截器）     *     * @param registry registry     */    @Override    public void addInterceptors(InterceptorRegistry registry) {        InterceptorRegistration ir_a = registry.addInterceptor(new OneInterceptor_a());        // 设置拦截规则        ir_a.addPathPatterns("/**");        // 设置无需拦截的路径规则        ir_a.excludePathPatterns("/one/index");         InterceptorRegistration ir_b = registry.addInterceptor(new OneInterceptor_b());         ir_b.addPathPatterns("/**");        super.addInterceptors(registry);    }}

二、新建拦截器类

public class OneInterceptor_a implements HandlerInterceptor {    /**     * 在请求处理之前执行该方法     *     * @param request  request     * @param response response     * @param handler  handler     * @return boolean     * @throws Exception Exception     */    @Override    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)            throws Exception {        System.out.println("Interceptor:[a-preHandle]>>>在请求处理之前进行调用（Controller方法调用之前）");        // 判断是否是Ajax请求，如果是，不拦截。        if (request.getHeader("x-requested-with") != null &&                request.getHeader("x-requested-with").equalsIgnoreCase("XMLHttpRequest")) {            return true;        }        // 输出调用的类名和方法名        if (handler instanceof HandlerMethod) {            HandlerMethod handlerMethod = (HandlerMethod) handler;            System.out.println("Interceptor:[a-preHandle]>>>请求控制器名称：" + handlerMethod.getBean().getClass().getName());            System.out.println("Interceptor:[a-preHandle]>>>请求方法名称：" + handlerMethod.getMethod().getName());        }        return true;    }    /**     * 在请求处理之后，在视图渲染之前执行该方法     *     * @param request      request     * @param response     response     * @param handler      handler     * @param modelAndView modelAndView     * @throws Exception Exception     */    @Override    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,                           ModelAndView modelAndView) throws Exception {        // System.out.println("Interceptor:[a-postHandle]>>>请求处理之后、在视图被渲染之前进行调用（Controller方法调用之后）");    }    /**     * 整个请求处理结束，视图渲染之后执行该方法     *     * @param request  request     * @param response response     * @param handler  handler     * @param e        e     * @throws Exception Exception     */    @Override    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception e)            throws Exception {        // System.out.println("Interceptor:[a-afterCompletion]>>>在整个请求结束之后被调用，" +        //         "DispatcherServlet渲染了对应的视图之后执行（主要进行资源清理）");    }}

OneInterceptor_b同理