spring CompositeHandlerMapping 源码
springboot CompositeHandlerMapping 代码
文件路径：/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/web/servlet/CompositeHandlerMapping.java
/*
* Copyright 2012-2021 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.boot.actuate.autoconfigure.web.servlet;
import java.util.ArrayList;
import java.util.List;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.ListableBeanFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.AnnotationAwareOrderComparator;
import org.springframework.web.servlet.HandlerExecutionChain;
import org.springframework.web.servlet.HandlerMapping;
/**
* Composite {@link HandlerMapping}.
*
* @author Andy Wilkinson
* @author Stephane Nicoll
* @author Phillip Webb
*/
class CompositeHandlerMapping implements HandlerMapping {
@Autowired
private ListableBeanFactory beanFactory;
private List<HandlerMapping> mappings;
@Override
public HandlerExecutionChain getHandler(HttpServletRequest request) throws Exception {
for (HandlerMapping mapping : getMappings()) {
HandlerExecutionChain handler = mapping.getHandler(request);
if (handler != null) {
return handler;
}
}
return null;
}
@Override
public boolean usesPathPatterns() {
for (HandlerMapping mapping : getMappings()) {
if (mapping.usesPathPatterns()) {
return true;
}
}
return false;
}
private List<HandlerMapping> getMappings() {
if (this.mappings == null) {
this.mappings = extractMappings();
}
return this.mappings;
}
private List<HandlerMapping> extractMappings() {
List<HandlerMapping> list = new ArrayList<>(this.beanFactory.getBeansOfType(HandlerMapping.class).values());
list.remove(this);
AnnotationAwareOrderComparator.sort(list);
return list;
}
}
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- 本文标签： Spring Boot Java Spring
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