org.springframework.boot.ClearCachesApplicationListener Maven / Gradle / Ivy
/*
* 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;
import java.lang.reflect.Method;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.util.ReflectionUtils;
/**
* {@link ApplicationListener} to cleanup caches once the context is loaded.
*
* @author Phillip Webb
*/
class ClearCachesApplicationListener implements ApplicationListener {
@Override
public void onApplicationEvent(ContextRefreshedEvent event) {
ReflectionUtils.clearCache();
clearClassLoaderCaches(Thread.currentThread().getContextClassLoader());
}
private void clearClassLoaderCaches(ClassLoader classLoader) {
if (classLoader == null) {
return;
}
try {
Method clearCacheMethod = classLoader.getClass().getDeclaredMethod("clearCache");
clearCacheMethod.invoke(classLoader);
}
catch (Exception ex) {
// Ignore
}
clearClassLoaderCaches(classLoader.getParent());
}
}