Retrieve javax.cache.CacheManager using Bean ClassLoader

This commit uses the bean's classloader to retrieve the CacheManager to
prevent issues with off-heap serialization.

See gh-13338

Author: mtheiss

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.java

@@ -26,6 +26,7 @@
 import javax.cache.configuration.MutableConfiguration;
 import javax.cache.spi.CachingProvider;
 
+import org.springframework.beans.factory.BeanClassLoaderAware;
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.boot.autoconfigure.condition.AnyNestedCondition;
 import org.springframework.boot.autoconfigure.condition.ConditionMessage;
@@ -61,7 +62,7 @@
 @Conditional({ CacheCondition.class,
 		JCacheCacheConfiguration.JCacheAvailableCondition.class })
 @Import(HazelcastJCacheCustomizationConfiguration.class)
-class JCacheCacheConfiguration {
+class JCacheCacheConfiguration implements BeanClassLoaderAware {
 
 	private final CacheProperties cacheProperties;
 
@@ -73,6 +74,8 @@ class JCacheCacheConfiguration {
 
 	private final List<JCachePropertiesCustomizer> cachePropertiesCustomizers;
 
+	private ClassLoader beanClassLoader;
+
 	JCacheCacheConfiguration(CacheProperties cacheProperties,
 			CacheManagerCustomizers customizers,
 			ObjectProvider<javax.cache.configuration.Configuration<?, ?>> defaultCacheConfiguration,
@@ -113,9 +116,9 @@ private CacheManager createCacheManager() throws IOException {
 				.resolveConfigLocation(this.cacheProperties.getJcache().getConfig());
 		if (configLocation != null) {
 			return cachingProvider.getCacheManager(configLocation.getURI(),
-					cachingProvider.getDefaultClassLoader(), properties);
+					this.beanClassLoader, properties);
 		}
-		return cachingProvider.getCacheManager(null, null, properties);
+		return cachingProvider.getCacheManager(null, this.beanClassLoader, properties);
 	}
 
 	private CachingProvider getCachingProvider(String cachingProviderFqn) {
@@ -151,6 +154,11 @@ private void customize(CacheManager cacheManager) {
 		}
 	}
 
+	@Override
+	public void setBeanClassLoader(ClassLoader classLoader) {
+		this.beanClassLoader = classLoader;
+	}
+
 	/**
 	 * Determine if JCache is available. This either kicks in if a provider is available
 	 * as defined per {@link JCacheProviderAvailableCondition} or if a