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注解库中，一个配置选项“创建缺少的缓存”可用于动态创建缓存（缓存未在ehcache.xml中定义）。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

我可以通过扩展组织来做到这一点。springframework。隐藏物ehcache。EHCacheManager和重写getCache（字符串名）方法。下面是代码片段：

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。