spring security WebExpressionConfigAttribute 源码
spring security WebExpressionConfigAttribute 代码
文件路径：/web/src/main/java/org/springframework/security/web/access/expression/WebExpressionConfigAttribute.java
/*
* Copyright 2002-2016 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.web.access.expression;
import org.springframework.expression.EvaluationContext;
import org.springframework.expression.Expression;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.web.FilterInvocation;
/**
* Simple expression configuration attribute for use in web request authorizations.
*
* @author Luke Taylor
* @since 3.0
*/
class WebExpressionConfigAttribute implements ConfigAttribute, EvaluationContextPostProcessor<FilterInvocation> {
private final Expression authorizeExpression;
private final EvaluationContextPostProcessor<FilterInvocation> postProcessor;
WebExpressionConfigAttribute(Expression authorizeExpression,
EvaluationContextPostProcessor<FilterInvocation> postProcessor) {
this.authorizeExpression = authorizeExpression;
this.postProcessor = postProcessor;
}
Expression getAuthorizeExpression() {
return this.authorizeExpression;
}
@Override
public EvaluationContext postProcess(EvaluationContext context, FilterInvocation fi) {
return (this.postProcessor != null) ? this.postProcessor.postProcess(context, fi) : context;
}
@Override
public String getAttribute() {
return null;
}
@Override
public String toString() {
return this.authorizeExpression.getExpressionString();
}
}
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