Is there WebFilter fires after Controller in Spring WebFlux using Netty Server?-CodePudding

I am looking for servlet Filter equivalent in Spring WebFlux. The WebFilter seems to only fires before the controller but not after. e.g I can add a WebFilter to do something when a request comes in, but I couldn't find an equivalent "filter" to do something when a response is sending back.

Can you have a "filter" that fires in both ways?

CodePudding user response：

You can still use WebFilter to modify your server's outbound responses as well. Here's an example of adding a header to the response:

@Component
public class ExampleWebFilter implements WebFilter {
 
    @Override
    public Mono<Void> filter(ServerWebExchange serverWebExchange, 
      WebFilterChain webFilterChain) {
        
        serverWebExchange.getResponse()
          .getHeaders().add("web-filter", "web-filter-test");
        return webFilterChain.filter(serverWebExchange);
    }
}

Reference: https://www.baeldung.com/spring-webflux-filters

CodePudding user response：

Just add code after the webFilterChain.filter call.

@Component
public class MyFilter implements WebFilter {

@Override
public Mono<Void> filter(ServerWebExchange exchange, WebFilterChain chain) {
  Mono<Void> result = chain.filter(exchange);
  return result.then(<do-whatever>);
}