spring security InitializeAuthenticationProviderBeanManagerConfigurer 源码
spring security InitializeAuthenticationProviderBeanManagerConfigurer 代码
文件路径：/config/src/main/java/org/springframework/security/config/annotation/authentication/configuration/InitializeAuthenticationProviderBeanManagerConfigurer.java
/*
* Copyright 2002-2019 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.security.config.annotation.authentication.configuration;
import org.springframework.context.ApplicationContext;
import org.springframework.core.annotation.Order;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
/**
* Lazily initializes the global authentication with an {@link AuthenticationProvider} if
* it is not yet configured and there is only a single Bean of that type.
*
* @author Rob Winch
* @since 4.1
*/
@Order(InitializeAuthenticationProviderBeanManagerConfigurer.DEFAULT_ORDER)
class InitializeAuthenticationProviderBeanManagerConfigurer extends GlobalAuthenticationConfigurerAdapter {
static final int DEFAULT_ORDER = InitializeUserDetailsBeanManagerConfigurer.DEFAULT_ORDER - 100;
private final ApplicationContext context;
/**
* @param context the ApplicationContext to look up beans.
*/
InitializeAuthenticationProviderBeanManagerConfigurer(ApplicationContext context) {
this.context = context;
}
@Override
public void init(AuthenticationManagerBuilder auth) throws Exception {
auth.apply(new InitializeAuthenticationProviderManagerConfigurer());
}
class InitializeAuthenticationProviderManagerConfigurer extends GlobalAuthenticationConfigurerAdapter {
@Override
public void configure(AuthenticationManagerBuilder auth) {
if (auth.isConfigured()) {
return;
}
AuthenticationProvider authenticationProvider = getBeanOrNull(AuthenticationProvider.class);
if (authenticationProvider == null) {
return;
}
auth.authenticationProvider(authenticationProvider);
}
/**
* @return a bean of the requested class if there's just a single registered
* component, null otherwise.
*/
private <T> T getBeanOrNull(Class<T> type) {
String[] beanNames = InitializeAuthenticationProviderBeanManagerConfigurer.this.context
.getBeanNamesForType(type);
if (beanNames.length != 1) {
return null;
}
return InitializeAuthenticationProviderBeanManagerConfigurer.this.context.getBean(beanNames[0], type);
}
}
}
相关信息
相关文章
spring security AuthenticationConfiguration 源码
spring security EnableGlobalAuthentication 源码
spring security GlobalAuthenticationConfigurerAdapter 源码
spring security InitializeUserDetailsBeanManagerConfigurer 源码
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