spring security MethodSecurityEvaluationContext 源码
spring security MethodSecurityEvaluationContext 代码
文件路径：/core/src/main/java/org/springframework/security/access/expression/method/MethodSecurityEvaluationContext.java
/*
* Copyright 2002-2022 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.security.access.expression.method;
import java.lang.reflect.Method;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.aop.framework.AopProxyUtils;
import org.springframework.aop.support.AopUtils;
import org.springframework.context.expression.MethodBasedEvaluationContext;
import org.springframework.core.ParameterNameDiscoverer;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.parameters.DefaultSecurityParameterNameDiscoverer;
/**
* Internal security-specific EvaluationContext implementation which lazily adds the
* method parameter values as variables (with the corresponding parameter names) if and
* when they are required.
*
* @author Luke Taylor
* @author Daniel Bustamante
* @author Evgeniy Cheban
* @since 3.0
*/
class MethodSecurityEvaluationContext extends MethodBasedEvaluationContext {
/**
* Intended for testing. Don't use in practice as it creates a new parameter resolver
* for each instance. Use the constructor which takes the resolver, as an argument
* thus allowing for caching.
*/
MethodSecurityEvaluationContext(Authentication user, MethodInvocation mi) {
this(user, mi, new DefaultSecurityParameterNameDiscoverer());
}
MethodSecurityEvaluationContext(Authentication user, MethodInvocation mi,
ParameterNameDiscoverer parameterNameDiscoverer) {
super(mi.getThis(), getSpecificMethod(mi), mi.getArguments(), parameterNameDiscoverer);
}
MethodSecurityEvaluationContext(MethodSecurityExpressionOperations root, MethodInvocation mi,
ParameterNameDiscoverer parameterNameDiscoverer) {
super(root, getSpecificMethod(mi), mi.getArguments(), parameterNameDiscoverer);
}
private static Method getSpecificMethod(MethodInvocation mi) {
return AopUtils.getMostSpecificMethod(mi.getMethod(), AopProxyUtils.ultimateTargetClass(mi.getThis()));
}
}
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