java - Spring Boot Oauth2 Retrieving access token There is no client authentication. Try adding an appropriate authentication filter -

here's application.java

@springbootapplication @restcontroller @enableresourceserver @enableauthorizationserver public class application {      @requestmapping(value = { "/user" }, produces = "application/json")     public map<string, object> user(oauth2authentication user) {         map<string, object> userinfo = new hashmap<>();         userinfo.put("user", user.getuserauthentication().getprincipal());         userinfo.put("authorities", authorityutils.authoritylisttoset(user.getuserauthentication().getauthorities()));         return userinfo;     }       public static void main(string[] args) {         springapplication.run(application.class, args);     }   } 

websecurityconfigurer.java

@configuration public class websecurityconfigurer extends websecurityconfigureradapter {     @override     @bean     public authenticationmanager authenticationmanagerbean() throws exception {         return super.authenticationmanagerbean();     }     @override     protected void configure(httpsecurity http) throws exception {         http.csrf().disable();     }      @override     @bean     public userdetailsservice userdetailsservicebean() throws exception {         return super.userdetailsservicebean();     }      @override     protected void configure(authenticationmanagerbuilder auth) throws exception {         auth                 .inmemoryauthentication()                 .withuser("john.carnell").password("password1").roles("user")                 .and()                 .withuser("william.woodward").password("password2").roles("user", "admin");     } } 

my oauth2config

@configuration public class oauth2config extends authorizationserverconfigureradapter {      @autowired     private authenticationmanager authenticationmanager;      @autowired     private userdetailsservice userdetailsservice;      @override     public void configure(clientdetailsserviceconfigurer clients) throws exception {         clients.inmemory()                 .withclient("eagleeye")                 .secret("thisissecret")                 .authorizedgranttypes("refresh_token", "password", "client_credentials")                 .scopes("webclient", "mobileclient");     }      @override     public void configure(authorizationserverendpointsconfigurer endpoints) throws exception {         endpoints                 .authenticationmanager(authenticationmanager)                 .userdetailsservice(userdetailsservice);     } } 

i trying retrieve access token though postman however, error keeps showing up

{   "error": "unauthorized",   "error_description": "there no client authentication. try adding appropriate authentication filter." } 

these values i'm passing in through postman

what missing on config?