spring CompositeResourceManager 源码
springboot CompositeResourceManager 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/undertow/CompositeResourceManager.java
/*
* Copyright 2012-2019 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.web.embedded.undertow;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import io.undertow.UndertowMessages;
import io.undertow.server.handlers.resource.Resource;
import io.undertow.server.handlers.resource.ResourceChangeListener;
import io.undertow.server.handlers.resource.ResourceManager;
/**
* A {@link ResourceManager} that delegates to multiple {@code ResourceManager} instances.
*
* @author Andy Wilkinson
*/
class CompositeResourceManager implements ResourceManager {
private final List<ResourceManager> resourceManagers;
CompositeResourceManager(ResourceManager... resourceManagers) {
this.resourceManagers = Arrays.asList(resourceManagers);
}
@Override
public void close() throws IOException {
for (ResourceManager resourceManager : this.resourceManagers) {
resourceManager.close();
}
}
@Override
public Resource getResource(String path) throws IOException {
for (ResourceManager resourceManager : this.resourceManagers) {
Resource resource = resourceManager.getResource(path);
if (resource != null) {
return resource;
}
}
return null;
}
@Override
public boolean isResourceChangeListenerSupported() {
return false;
}
@Override
public void registerResourceChangeListener(ResourceChangeListener listener) {
throw UndertowMessages.MESSAGES.resourceChangeListenerNotSupported();
}
@Override
public void removeResourceChangeListener(ResourceChangeListener listener) {
throw UndertowMessages.MESSAGES.resourceChangeListenerNotSupported();
}
}
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