spring ReflectionEnvironmentPostProcessorsFactory 源码
springboot ReflectionEnvironmentPostProcessorsFactory 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/env/ReflectionEnvironmentPostProcessorsFactory.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.env;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.apache.commons.logging.Log;
import org.springframework.boot.BootstrapContext;
import org.springframework.boot.BootstrapRegistry;
import org.springframework.boot.ConfigurableBootstrapContext;
import org.springframework.boot.logging.DeferredLogFactory;
import org.springframework.boot.util.Instantiator;
/**
* {@link EnvironmentPostProcessorsFactory} implementation that uses reflection to create
* instances.
*
* @author Phillip Webb
*/
class ReflectionEnvironmentPostProcessorsFactory implements EnvironmentPostProcessorsFactory {
private final List<Class<?>> classes;
private ClassLoader classLoader;
private final List<String> classNames;
ReflectionEnvironmentPostProcessorsFactory(Class<?>... classes) {
this.classes = new ArrayList<>(Arrays.asList(classes));
this.classNames = null;
}
ReflectionEnvironmentPostProcessorsFactory(ClassLoader classLoader, String... classNames) {
this(classLoader, Arrays.asList(classNames));
}
ReflectionEnvironmentPostProcessorsFactory(ClassLoader classLoader, List<String> classNames) {
this.classes = null;
this.classLoader = classLoader;
this.classNames = classNames;
}
@Override
public List<EnvironmentPostProcessor> getEnvironmentPostProcessors(DeferredLogFactory logFactory,
ConfigurableBootstrapContext bootstrapContext) {
Instantiator<EnvironmentPostProcessor> instantiator = new Instantiator<>(EnvironmentPostProcessor.class,
(parameters) -> {
parameters.add(DeferredLogFactory.class, logFactory);
parameters.add(Log.class, logFactory::getLog);
parameters.add(ConfigurableBootstrapContext.class, bootstrapContext);
parameters.add(BootstrapContext.class, bootstrapContext);
parameters.add(BootstrapRegistry.class, bootstrapContext);
});
return (this.classes != null) ? instantiator.instantiateTypes(this.classes)
: instantiator.instantiate(this.classLoader, this.classNames);
}
}
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