spring SecurityFilterAutoConfiguration 源码

springboot SecurityFilterAutoConfiguration 代码

文件路径：/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/servlet/SecurityFilterAutoConfiguration.java

/*
 * Copyright 2012-2022 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.boot.autoconfigure.security.servlet;

import java.util.EnumSet;
import java.util.stream.Collectors;

import jakarta.servlet.DispatcherType;

import org.springframework.boot.autoconfigure.AutoConfiguration;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication.Type;
import org.springframework.boot.autoconfigure.security.SecurityProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.boot.web.servlet.DelegatingFilterProxyRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.web.context.AbstractSecurityWebApplicationInitializer;

/**
 * {@link EnableAutoConfiguration Auto-configuration} for Spring Security's Filter.
 * Configured separately from {@link SpringBootWebSecurityConfiguration} to ensure that
 * the filter's order is still configured when a user-provided
 * {@link WebSecurityConfiguration} exists.
 *
 * @author Rob Winch
 * @author Phillip Webb
 * @author Andy Wilkinson
 * @since 1.3.0
 */
@AutoConfiguration(after = SecurityAutoConfiguration.class)
@ConditionalOnWebApplication(type = Type.SERVLET)
@EnableConfigurationProperties(SecurityProperties.class)
@ConditionalOnClass({ AbstractSecurityWebApplicationInitializer.class, SessionCreationPolicy.class })
public class SecurityFilterAutoConfiguration {

	private static final String DEFAULT_FILTER_NAME = AbstractSecurityWebApplicationInitializer.DEFAULT_FILTER_NAME;

	@Bean
	@ConditionalOnBean(name = DEFAULT_FILTER_NAME)
	public DelegatingFilterProxyRegistrationBean securityFilterChainRegistration(
			SecurityProperties securityProperties) {
		DelegatingFilterProxyRegistrationBean registration = new DelegatingFilterProxyRegistrationBean(
				DEFAULT_FILTER_NAME);
		registration.setOrder(securityProperties.getFilter().getOrder());
		registration.setDispatcherTypes(getDispatcherTypes(securityProperties));
		return registration;
	}

	private EnumSet<DispatcherType> getDispatcherTypes(SecurityProperties securityProperties) {
		if (securityProperties.getFilter().getDispatcherTypes() == null) {
			return null;
		}
		return securityProperties.getFilter().getDispatcherTypes().stream()
				.map((type) -> DispatcherType.valueOf(type.name()))
				.collect(Collectors.toCollection(() -> EnumSet.noneOf(DispatcherType.class)));
	}

}

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