问题
When implementing interceptor with Servlet API I got HandlerMethod out of the box:
... extends HandlerInterceptorAdapter
@Override
public boolean preHandle(final HttpServletRequest request,
final HttpServletResponse response, final Object handlerMethod) throws Exception {
Can I get access to HandlerMethod while implementing WebFilter instead of HandlerInterceptorAdapter?
In case of WebFilter I have:
... implements WebFilter {
public Mono<Void> filter(ServerWebExchange serverWebExchange, WebFilterChain webFilterChain) {
Once I could access HandlerMethod by invoking serverWebExchange.getAttribute("....bestMatchingHandler"), but it doesn't work anymore. See corresponding question. My question here is: how can I get HandlerMethod without using serverWebExchange.getAttribute?
回答1:
I found the answer which helped to answer also my original question. HandlerMethod can be got this way:
(HandlerMethod) this.handlerMapping.getHandler(serverWebExchange).toProcessor().peek();
where handlerMapping is a bean of type RequestMappingHandlerMapping which you can inject from WebFlux.
来源：https://stackoverflow.com/questions/51840647/get-handlermethod-from-webfilter-in-webflux