最近项目需要使用spring cache整合ehcache来实现(只有很少的数据需要缓存,不想增加项目部署难度),但是整合后发现报Cannot find cache named 异常,发现是引入的一个第三方jar包也在使用spring cache。所以能不能根据项目ehcache.xml配置的具体缓存项来实现选择哪些cache是生效的呢。

在springboot整合缓存时,我们可以实现CachingConfigurerSupport 来细化缓存配置,而其中cacheResolver方法返回的CacheResolver接口实现类是可以细化具体每一个缓存方法究竟使用哪个缓存的。所以我们只需要继承并重写AbstractCacheResolver中的getCacheNames方法,使之返回我们在Ehcache中已经定义了的缓存名称就可以实现缓存注解只对Ehcache配置了项起作用。

@Component
public class EhCacheResolver extends AbstractCacheResolver {
    /**
     * Provide the name of the cache(s) to resolve against the current cache manager.
     * <p>It is acceptable to return [email protected] null} to indicate that no cache could
     * be resolved for this invocation.
     *
     * @param context the context of the particular invocation
     * @return the cache name(s) to resolve, or [email protected] null} if no cache should be resolved
     */
    @Override
    protected Collection<String> getCacheNames(CacheOperationInvocationContext<?> context) {
        return getCacheManager().getCacheNames();
    }

    /**
     * Set the [email protected] CacheManager} that this instance should use.
     *
     * @param cacheManager
     */
    @Override
    @Autowired
    public void setCacheManager(CacheManager cacheManager) {
        super.setCacheManager(cacheManager);
    }
}