SpringBoot系列：Spring Boot集成Spring Cache，使用EhCache

import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.ehcache.EhCacheCacheManager;
import org.springframework.cache.ehcache.EhCacheManagerFactoryBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import net.sf.ehcache.CacheManager;
 
@Configuration
@EnableCaching
public class CacheConfig {
 
    @Bean
    public EhCacheManagerFactoryBean cacheManagerFactoryBean() {
        EhCacheManagerFactoryBean cacheManagerFactoryBean = new EhCacheManagerFactoryBean();
        cacheManagerFactoryBean.setConfigLocation(new ClassPathResource("ehcache.xml"));
        cacheManagerFactoryBean.setShared(true);
        return cacheManagerFactoryBean;
    }
 
    @Bean
    public CacheManager cacheManager() {
        return cacheManagerFactoryBean().getObject();
    }
 
    @Bean
    public EhCacheCacheManager ehCacheCacheManager() {
        return new EhCacheCacheManager(cacheManager());
    }
}

这段代码定义了一个配置类，它使用Spring Cache和EhCache来创建缓存管理器。它首先定义了一个EhCacheManagerFactoryBean，这是Spring用来创建EhCache的CacheManager的。然后，它通过cacheManager()方法返回了CacheManager的实例，并最终创建了一个EhCacheCacheManager的Bean，这个Bean可以被Spring Cache抽象层用来管理缓存。