FacebookAutoConfiguration.java 文件源码

@Bean
@ConditionalOnMissingBean(Facebook.class)
@Scope(value = "request", proxyMode = ScopedProxyMode.INTERFACES)
public Facebook facebook(ConnectionRepository repository) {
    Connection<Facebook> connection = repository
            .findPrimaryConnection(Facebook.class);
    return connection != null ? connection.getApi() : null;
}