spring - How to dynamically set @Bean at @Configuration in @Service? -

i use spring cloud & feign client app.and want set param 'accept-language' headers when call feign clients. found similar questions @ [using @headers dynamic values in feign client + spring cloud (brixton rc2)

ask]1,but don't know how set header param.here code: set mydefaultfeignconfig @ app.java @enablefeignclients(basepackages = {defaultconfiguration = mydefaultfeignconfig.class)

and mydefaultfeignconfig.java :

@configuration public class mydefaultfeignconfig {  private string requestlanguage = "zh";  @bean requestinterceptor feignrequestinterceptor() {     return new requestinterceptor() {         @override         public void apply(requesttemplate template) {             template.header("accept-language", requestlanguage);         }     }; }  //doesn't work public static void updatebean(string requestlanguage) {     annotationconfigapplicationcontext applicationcontext = new annotationconfigapplicationcontext(mydefaultfeignconfig.class);      try {         system.out.println(applicationcontext.getbean("feignrequestinterceptor"));     } catch (nosuchbeandefinitionexception e) {         system.out.println("bean not found");     }      beandefinitionregistry beanfactory = (beandefinitionregistry) applicationcontext.getbeanfactory();      beanfactory.registerbeandefinition("feignrequestinterceptor",             beandefinitionbuilder.genericbeandefinition(string.class)                     .addconstructorargvalue(new requestinterceptor() {                         @override                         public void apply(requesttemplate template) {                             template.header("accept-language", requestlanguage);                         }                     })                     .getbeandefinition()     );  } } 

my gateway controller :

@autowired  private leaseorderremoteservice leaseorderremoteservice;  @requestmapping(value = "/discovery/order/unifiyinit", method = requestmethod.get) public message unifiyorderinit(@requestheader("accept-language") string language) {     mydefaultfeignconfig.updatebean(language);     return leaseorderremoteservice.unifiyorderinit(); } 

my feign clients controller is:

public message unifiyorderinit(@requestheader("accept-language") string language) {     //... } 

and can value of "accept-language" mydefaultfeignconfig config first time set @bean.how can set value of "accept-language" gateway feign client.please me,thinks! suggestions grateful , best regards!