如何使用spring-ehcache抽象动态创建缓存

Question

在谷歌代码上提供的ehcache-spring注释库中，可以使用配置选项"创建缺少的缓存"来动态创建动态缓存（ehcache.xml中未定义的缓存）。在纯spring-ehcache抽象（spring 3.1.1）中是否有类似的配置？或者，有没有其他方法可以使用spring-ehcache抽象创建动态缓存？

Answer 1

我可以通过扩展org.springframework.cache.ehcache.EhCacheCacheManager并重写getCache（字符串名称）方法来实现这一点。以下是代码片段：

public class CustomEhCacheCacheManager extends EhCacheCacheManager {
private static final Logger logger = LoggerFactory
        .getLogger(CustomEhCacheCacheManager.class);
private static final String NO_CACHE_ERROR_MSG = "loadCaches must not return an empty Collection";
@Override
public void afterPropertiesSet() {
    try {
        super.afterPropertiesSet();
    } catch (IllegalArgumentException e) {
        if (NO_CACHE_ERROR_MSG.equals(e.getMessage())) {
            logger.debug("No cache was defined in ehcache.xml. The error "
                    + "thrown by spring because of this was suppressed.");
        } else {
            throw e;
        }
    }
}
@Override
public Cache getCache(String name) {
    Cache cache = super.getCache(name);
    if (cache == null) {
        logger.debug("No cache with name '"
                + name
                + "' is defined in encache.xml. Hence creating the cache dynamically...");
        getCacheManager().addCache(name);
        cache = new EhCacheCache(getCacheManager().getCache(name));
        addCache(cache);
        logger.debug("Cache with name '" + name
                + "' is created dynamically...");
    }
    return cache;
}

}

如果有其他更好的方法，请告诉我。