spring ConfigurationPropertySourcesPropertySource 源码
springboot ConfigurationPropertySourcesPropertySource 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/source/ConfigurationPropertySourcesPropertySource.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.context.properties.source;
import org.springframework.boot.origin.Origin;
import org.springframework.boot.origin.OriginLookup;
import org.springframework.core.env.Environment;
import org.springframework.core.env.PropertyResolver;
import org.springframework.core.env.PropertySource;
/**
* {@link PropertySource} that exposes {@link ConfigurationPropertySource} instances so
* that they can be used with a {@link PropertyResolver} or added to the
* {@link Environment}.
*
* @author Phillip Webb
* @author Madhura Bhave
*/
class ConfigurationPropertySourcesPropertySource extends PropertySource<Iterable<ConfigurationPropertySource>>
implements OriginLookup<String> {
ConfigurationPropertySourcesPropertySource(String name, Iterable<ConfigurationPropertySource> source) {
super(name, source);
}
@Override
public boolean containsProperty(String name) {
return findConfigurationProperty(name) != null;
}
@Override
public Object getProperty(String name) {
ConfigurationProperty configurationProperty = findConfigurationProperty(name);
return (configurationProperty != null) ? configurationProperty.getValue() : null;
}
@Override
public Origin getOrigin(String name) {
return Origin.from(findConfigurationProperty(name));
}
private ConfigurationProperty findConfigurationProperty(String name) {
try {
return findConfigurationProperty(ConfigurationPropertyName.of(name, true));
}
catch (Exception ex) {
return null;
}
}
ConfigurationProperty findConfigurationProperty(ConfigurationPropertyName name) {
if (name == null) {
return null;
}
for (ConfigurationPropertySource configurationPropertySource : getSource()) {
ConfigurationProperty configurationProperty = configurationPropertySource.getConfigurationProperty(name);
if (configurationProperty != null) {
return configurationProperty;
}
}
return null;
}
}
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- 本文标签： Spring Boot Spring Java
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