import org.springframework.security.oauth2.provider.code.AuthorizationCodeTokenGranter; //导入依赖的package包/类
private List<TokenGranter> getCustomizedTokenGranters() {
    AuthorizationServerTokenServices tokenServices = tokenServices();
    ClientDetailsService clientDetails = clientDetailsService();
    AuthorizationCodeServices authorizationCodeServices = authorizationCodeServices();
    OAuth2RequestFactory requestFactory = new DefaultOAuth2RequestFactory(clientDetails);

    AuthorizationCodeTokenGranter authorizationCodeTokenGranter = new AuthorizationCodeTokenGranter(tokenServices, authorizationCodeServices, clientDetails, requestFactory);
    RefreshTokenGranter refreshTokenGranter = new RefreshTokenGranter(tokenServices, clientDetails, requestFactory);
    ImplicitTokenGranter implicit = new ImplicitTokenGranter(tokenServices, clientDetails, requestFactory);
    ClientCredentialsTokenGranter clientCredentialsTokenGranter = new ClientCredentialsTokenGranter(tokenServices, clientDetails, requestFactory);
    clientCredentialsTokenGranter.setAllowRefresh(true);//custom config, see AuthorizationServerEndpointsConfigurer.getDefaultTokenGranters

    List<TokenGranter> tokenGranters = new ArrayList<>();
    tokenGranters.add(authorizationCodeTokenGranter);
    tokenGranters.add(refreshTokenGranter);
    tokenGranters.add(implicit);
    tokenGranters.add(clientCredentialsTokenGranter);
    if (authenticationManager != null) {
        tokenGranters.add(new ResourceOwnerPasswordTokenGranter(authenticationManager, tokenServices, clientDetails, requestFactory));
    }

    return tokenGranters;
}
 

import org.springframework.security.oauth2.provider.code.AuthorizationCodeTokenGranter; //导入依赖的package包/类
protected TokenGranter getTokenGranter(String grantType) {

        if ("authorization_code".equals(grantType)) {
            return new AuthorizationCodeTokenGranter(tokenServices, authorizationCodeServices, clientDetailsService, this.oAuth2RequestFactory);
        } else if ("password".equals(grantType)) {
            return new ResourceOwnerPasswordTokenGranter(getAuthenticationManager(), tokenServices, clientDetailsService, this.oAuth2RequestFactory);
        } else if ("refresh_token".equals(grantType)) {
            return new RefreshTokenGranter(tokenServices, clientDetailsService, this.oAuth2RequestFactory);
        } else if ("client_credentials".equals(grantType)) {
            return new ClientCredentialsTokenGranter(tokenServices, clientDetailsService, this.oAuth2RequestFactory);
        } else if ("implicit".equals(grantType)) {
            return new ImplicitTokenGranter(tokenServices, clientDetailsService, this.oAuth2RequestFactory);
        } else {
            throw new UnsupportedGrantTypeException("Unsupport grant_type: " + grantType);
        }
    }
 

import org.springframework.security.oauth2.provider.code.AuthorizationCodeTokenGranter; //导入依赖的package包/类
@Bean
TokenGranter tokenGranter() {
    List<TokenGranter> tokenGranters = Lists.newArrayList();
    ResourceOwnerPasswordTokenGranter resourceOwnerPasswordTokenGranter = new ResourceOwnerPasswordTokenGranter(am,getDefaultTokenServices()
    ,getClientDetailsService(),new DefaultOAuth2RequestFactory(getClientDetailsService()));
    ClientCredentialsTokenGranter clientCredentialsTokenGranter = new ClientCredentialsTokenGranter(getDefaultTokenServices(),getClientDetailsService(),new DefaultOAuth2RequestFactory(getClientDetailsService()));
    AuthorizationCodeTokenGranter authorizationCodeTokenGranter = new AuthorizationCodeTokenGranter(getDefaultTokenServices(),authorizationCodeServices(),getClientDetailsService(),new DefaultOAuth2RequestFactory(getClientDetailsService()));
    ImplicitTokenGranter implicitTokenGranter = new ImplicitTokenGranter(getDefaultTokenServices(),getClientDetailsService(),new DefaultOAuth2RequestFactory(getClientDetailsService()));
    tokenGranters.add(resourceOwnerPasswordTokenGranter);
    tokenGranters.add(clientCredentialsTokenGranter);
    tokenGranters.add(authorizationCodeTokenGranter);
    tokenGranters.add(implicitTokenGranter);
    return new CompositeTokenGranter(tokenGranters);
}
 

import org.springframework.security.oauth2.provider.code.AuthorizationCodeTokenGranter; //导入依赖的package包/类
private TokenGranter compositeTokenGranter(final ClientDetailsService clientService,
                                           final AuthenticationManager manager,
                                           final DefaultTokenServices tokenServices,
                                           final OAuth2RequestFactory requestFactory,
                                           final AuthorizationCodeServices authorizationCodeServices) {

    List<TokenGranter> granters = new ArrayList<>();
    granters.add(new ClientCredentialsTokenGranter(tokenServices, clientService, requestFactory));
    granters.add(new ImplicitTokenGranter(tokenServices, clientService, requestFactory));
    granters.add(new ResourceOwnerPasswordTokenGranter(manager, tokenServices, clientService, requestFactory));
    granters.add(new RefreshTokenGranter(tokenServices, clientService, requestFactory));
    granters.add(new AuthorizationCodeTokenGranter(tokenServices, authorizationCodeServices, clientService, requestFactory));
    return new CompositeTokenGranter(granters);
}