import org.springframework.security.oauth2.provider.authentication.BearerTokenExtractor; //导入依赖的package包/类
private Filter resourceOAuthFilter() {
    final DefaultTokenServices remoteTokenService = new DefaultTokenServices();
    remoteTokenService.setTokenStore(jwtTokenStore());
    final OAuth2AuthenticationManager oauth2Manager = new OAuth2AuthenticationManager();
    oauth2Manager.setTokenServices(remoteTokenService);
    final OAuth2AuthenticationProcessingFilter oAuth2AuthenticationProcessingFilter = new OAuth2AuthenticationProcessingFilter();
    oAuth2AuthenticationProcessingFilter.setTokenExtractor(new BearerTokenExtractor());
    oAuth2AuthenticationProcessingFilter.setAuthenticationManager(oauth2Manager);
    return oAuth2AuthenticationProcessingFilter;
}
 

import org.springframework.security.oauth2.provider.authentication.BearerTokenExtractor; //导入依赖的package包/类
@Override
public void configure(ResourceServerSecurityConfigurer resources) throws Exception {
    resources.tokenExtractor(new PoPTokenExtractor(new BearerTokenExtractor()));
    OAuth2AuthenticationManager oauth = new OAuth2AuthenticationManager();
    oauth.setTokenServices(tokenServices());
    resources.authenticationManager(new PoPAuthenticationManager(oauth));
}
 

import org.springframework.security.oauth2.provider.authentication.BearerTokenExtractor; //导入依赖的package包/类
@Autowired
OAuth2ExtraValidationFilter(
    OAuth2IssuerService oAuth2IssuerService,
    TokenStore tokenStore,
    AuditOAuth2AuthenticationExceptionHandler oAuth2AuthenticationExceptionHandler,
    MessageSourceAccessor messageSourceAccessor,
    AuthenticationEventPublisher eventPublisher
) {
  this.oAuth2IssuerService = oAuth2IssuerService;
  this.tokenStore = tokenStore;
  this.oAuth2AuthenticationExceptionHandler = oAuth2AuthenticationExceptionHandler;
  this.eventPublisher = eventPublisher;
  this.tokenExtractor = new BearerTokenExtractor();
  this.messageSourceAccessor = messageSourceAccessor;
}
 

import org.springframework.security.oauth2.provider.authentication.BearerTokenExtractor; //导入依赖的package包/类
private TokenExtractor tokenExtractor() {
  return new BearerTokenExtractor() {
    protected String extractToken(HttpServletRequest request) {
      // only check the header...
      return extractHeaderToken(request);
    }
  };
}