spring security AffirmativeBased 源码
spring security AffirmativeBased 代码
文件路径：/core/src/main/java/org/springframework/security/access/vote/AffirmativeBased.java
/*
* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
*
* 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.access.vote;
import java.util.Collection;
import java.util.List;
import org.springframework.security.access.AccessDecisionVoter;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.core.Authentication;
/**
* Simple concrete implementation of
* {@link org.springframework.security.access.AccessDecisionManager} that grants access if
* any <code>AccessDecisionVoter</code> returns an affirmative response.
*/
public class AffirmativeBased extends AbstractAccessDecisionManager {
public AffirmativeBased(List<AccessDecisionVoter<?>> decisionVoters) {
super(decisionVoters);
}
/**
* This concrete implementation simply polls all configured
* {@link AccessDecisionVoter}s and grants access if any
* <code>AccessDecisionVoter</code> voted affirmatively. Denies access only if there
* was a deny vote AND no affirmative votes.
* <p>
* If every <code>AccessDecisionVoter</code> abstained from voting, the decision will
* be based on the {@link #isAllowIfAllAbstainDecisions()} property (defaults to
* false).
* </p>
* @param authentication the caller invoking the method
* @param object the secured object
* @param configAttributes the configuration attributes associated with the method
* being invoked
* @throws AccessDeniedException if access is denied
*/
@Override
@SuppressWarnings({ "rawtypes", "unchecked" })
public void decide(Authentication authentication, Object object, Collection<ConfigAttribute> configAttributes)
throws AccessDeniedException {
int deny = 0;
for (AccessDecisionVoter voter : getDecisionVoters()) {
int result = voter.vote(authentication, object, configAttributes);
switch (result) {
case AccessDecisionVoter.ACCESS_GRANTED:
return;
case AccessDecisionVoter.ACCESS_DENIED:
deny++;
break;
default:
break;
}
}
if (deny > 0) {
throw new AccessDeniedException(
this.messages.getMessage("AbstractAccessDecisionManager.accessDenied", "Access is denied"));
}
// To get this far, every AccessDecisionVoter abstained
checkAllowIfAllAbstainDecisions();
}
}
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