import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration; //导入依赖的package包/类
public OAuth2AuthorizationServerConfiguration(BaseClientDetails details,
		AuthenticationConfiguration authenticationConfiguration,
		ObjectProvider<TokenStore> tokenStore,
		ObjectProvider<AccessTokenConverter> tokenConverter,
		AuthorizationServerProperties properties) throws Exception {
	this.details = details;
	this.authenticationManager = authenticationConfiguration.getAuthenticationManager();
	this.tokenStore = tokenStore.getIfAvailable();
	this.tokenConverter = tokenConverter.getIfAvailable();
	this.properties = properties;
}
 

import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration; //导入依赖的package包/类
@Bean
public AuthenticationManager authenticationManager(AuthenticationConfiguration authenticationConfiguration)
		throws Exception {
	return authenticationConfiguration.getAuthenticationManager();
}
 

import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration; //导入依赖的package包/类
@Bean
@Primary
public AuthenticationManager authenticationManager(
		AuthenticationConfiguration configuration) throws Exception {
	return configuration.getAuthenticationManager();
}