java - Filter invoke twice when register as Spring bean -

i want use @autowire filter. define filter in securityconfig below:

    @override     protected void configure(httpsecurity http) throws exception {         http.sessionmanagement().sessioncreationpolicy(sessioncreationpolicy.stateless);         http.addfilterbefore(geta(), basicauthenticationfilter.class);         http.csrf().disable();     }      @bean     public geta(){         return new a();     } 

this filter a extends spring's genericfilterbean.

i below output when invoke controller, shows filter hits twice.

filter before filter before mycontroller invoke filter after filter after 

my observation is, invocation invoke spring container because if filter not register bean, hits once. reason , how can fix it?

as have observed, spring boot automatically register bean filter servlet container. 1 option not expose filter bean , register spring security.

if want able autowire dependencies filter needs bean. means need tell spring boot not register filter. described in documentation, using filterregistrationbean:

@bean public filterregistrationbean registration(myfilter filter) {     filterregistrationbean registration = new filterregistrationbean(filter);     registration.setenabled(false);     return registration; }