spring security AbstractAclVoter 源码
spring security AbstractAclVoter 代码
文件路径：/core/src/main/java/org/springframework/security/access/vote/AbstractAclVoter.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 org.aopalliance.intercept.MethodInvocation;
import org.springframework.security.access.AccessDecisionVoter;
import org.springframework.security.access.AuthorizationServiceException;
import org.springframework.util.Assert;
/**
* Provides helper methods for writing domain object ACL voters. Not bound to any
* particular ACL system.
*
* @author Ben Alex
*/
public abstract class AbstractAclVoter implements AccessDecisionVoter<MethodInvocation> {
private Class<?> processDomainObjectClass;
protected Object getDomainObjectInstance(MethodInvocation invocation) {
Object[] args = invocation.getArguments();
Class<?>[] params = invocation.getMethod().getParameterTypes();
for (int i = 0; i < params.length; i++) {
if (this.processDomainObjectClass.isAssignableFrom(params[i])) {
return args[i];
}
}
throw new AuthorizationServiceException("MethodInvocation: " + invocation
+ " did not provide any argument of type: " + this.processDomainObjectClass);
}
public Class<?> getProcessDomainObjectClass() {
return this.processDomainObjectClass;
}
public void setProcessDomainObjectClass(Class<?> processDomainObjectClass) {
Assert.notNull(processDomainObjectClass, "processDomainObjectClass cannot be set to null");
this.processDomainObjectClass = processDomainObjectClass;
}
/**
* This implementation supports only <code>MethodSecurityInterceptor</code>, because
* it queries the presented <code>MethodInvocation</code>.
* @param clazz the secure object
* @return <code>true</code> if the secure object is <code>MethodInvocation</code>,
* <code>false</code> otherwise
*/
@Override
public boolean supports(Class<?> clazz) {
return (MethodInvocation.class.isAssignableFrom(clazz));
}
}
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