public class DemoInterceptor extends HandlerInterceptorAdapter {

    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response,
                             Object handler) throws Exception {

        // (1)Skip if not HandlerMethod
        //js or org.springframework.web.servlet.resource.Become a ResourceHttpRequestHandler
        if (!HandlerMethod.class.isInstance(handler)) {
            return true;
        }

        // (2)Cast handler to HandlerMethod
        HandlerMethod handlerMethod = HandlerMethod.class.cast(handler);

        // (3)Class name of Controller to be executed
        String beanTypeName = handlerMethod.getBeanType().getName();

        // (4)Method name of the method to be executed
        String methodName = handlerMethod.getMethod().getName();

        // (5)Short log message
        //FQCN as follows#MethodName[Arguments]Can be obtained
        // [example]
        // case1) No arguments
        // jp.gr.java_conf.pekokun.web.app.HelloController#say[0 args]
        // case2) 1 argument
        // jp.gr.java_conf.pekokun.web.app.HelloController#say[1 args]
        String shortLogMessage = handlerMethod.getShortLogMessage();

        // (6)You can also get method parameter information
        // handlerMethod.getMethodParameters()...

        return super.preHandle(request, response, handler);
    }

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