spring security OAuth2ImportSelector 源码
spring security OAuth2ImportSelector 代码
文件路径：/config/src/main/java/org/springframework/security/config/annotation/web/configuration/OAuth2ImportSelector.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.web.configuration;
import java.util.LinkedHashSet;
import java.util.Set;
import org.springframework.context.annotation.ImportSelector;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.util.ClassUtils;
import org.springframework.util.StringUtils;
/**
* Used by {@link EnableWebSecurity} to conditionally import:
*
* <ul>
* <li>{@link OAuth2ClientConfiguration} when the {@code spring-security-oauth2-client}
* module is present on the classpath</li>
* <li>{@link SecurityReactorContextConfiguration} when either the
* {@code spring-security-oauth2-client} or {@code spring-security-oauth2-resource-server}
* module as well as the {@code spring-webflux} module are present on the classpath</li>
* </ul>
*
* @author Joe Grandja
* @author Josh Cummings
* @since 5.1
* @see OAuth2ClientConfiguration
* @see SecurityReactorContextConfiguration
*/
final class OAuth2ImportSelector implements ImportSelector {
@Override
public String[] selectImports(AnnotationMetadata importingClassMetadata) {
Set<String> imports = new LinkedHashSet<>();
ClassLoader classLoader = getClass().getClassLoader();
boolean oauth2ClientPresent = ClassUtils
.isPresent("org.springframework.security.oauth2.client.registration.ClientRegistration", classLoader);
boolean webfluxPresent = ClassUtils
.isPresent("org.springframework.web.reactive.function.client.ExchangeFilterFunction", classLoader);
boolean oauth2ResourceServerPresent = ClassUtils
.isPresent("org.springframework.security.oauth2.server.resource.BearerTokenError", classLoader);
if (oauth2ClientPresent) {
imports.add("org.springframework.security.config.annotation.web.configuration.OAuth2ClientConfiguration");
}
if (webfluxPresent && oauth2ClientPresent) {
imports.add(
"org.springframework.security.config.annotation.web.configuration.SecurityReactorContextConfiguration");
}
if (webfluxPresent && oauth2ResourceServerPresent) {
imports.add(
"org.springframework.security.config.annotation.web.configuration.SecurityReactorContextConfiguration");
}
return StringUtils.toStringArray(imports);
}
}
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