ConditionalOnExpression - A conditional EhCache manager configuration

gistfile1.java

@Configuration
@EnableCaching
@ConditionalOnExpression("${spring.cacheable.cache}")
public class EhCacheConfiguration {

    @Autowired
    private net.sf.ehcache.CacheManager cacheManager;

    @Bean(name = "cacheManager")
    public CacheManager ehCacheCacheManager()
    {
        return new EhCacheCacheManager(cacheManager);
    }

    @Bean
    public EhCacheManagerFactoryBean ehcache() {
        EhCacheManagerFactoryBean ehCacheManagerFactoryBean = new EhCacheManagerFactoryBean();
        ehCacheManagerFactoryBean.setConfigLocation(new ClassPathResource("ehcache.xml"));

        // the cache manager should only be created once, so this must be shared == true
        ehCacheManagerFactoryBean.setShared(true);

        return ehCacheManagerFactoryBean;
    }
}

the cache manager creation can therefore be controlled by the application property spring.cacheable.cache.