Spring Boot教程(十九)：Spring Boot集成shiro ehcache(使用shiro的缓存管理)

﹏ヽ暗。殇╰゛Y 2022-05-22 04:54 279阅读 0赞

# 一、项目准备 #

为了方便，这里直接使用[Spring Boot教程(十六)：Spring Boot集成shiro][Spring Boot_Spring Boot_shiro]章节的源码。

# 二、添加依赖 #

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-cache</artifactId>
    </dependency>
    <dependency>
        <groupId>net.sf.ehcache</groupId>
        <artifactId>ehcache</artifactId>
    </dependency>
    
    <dependency>
        <groupId>org.apache.shiro</groupId>
        <artifactId>shiro-ehcache</artifactId>
        <version>1.4.0</version>
    </dependency>

# 三、创建ehcache配置文件 #

在`resources`目录下，创`ehcache.xml`配置文件，内容如下:

<?xml version="1.0" encoding="UTF-8"?>
    <ehcache updateCheck="false" dynamicConfig="false">
        <diskStore path="java.io.tmpdir"/>
    
        <cache name="users" timeToLiveSeconds="300" maxEntriesLocalHeap="1000"/>
    
        
        <defaultCache name="defaultCache" maxElementsInMemory="10000" eternal="false" timeToIdleSeconds="120" timeToLiveSeconds="120" overflowToDisk="false" maxElementsOnDisk="100000" diskPersistent="false" diskExpiryThreadIntervalSeconds="120" memoryStoreEvictionPolicy="LRU"/>
    </ehcache>

# 四、修改ShiroConfig类 #

1、添加以下代码：

/** * 缓存管理器 * @return */
    @Bean
    public EhCacheManager ehCacheManager(){
        EhCacheManager cacheManager = new EhCacheManager();
        cacheManager.setCacheManagerConfigFile("classpath:ehcache.xml");
        return cacheManager;
    }
    
    /** * aop代理 * @return */
    @Bean
    @DependsOn("lifecycleBeanPostProcessor")
    public DefaultAdvisorAutoProxyCreator defaultAdvisorAutoProxyCreator() {
        DefaultAdvisorAutoProxyCreator defaultAdvisorAutoProxyCreator = new DefaultAdvisorAutoProxyCreator();
        defaultAdvisorAutoProxyCreator.setProxyTargetClass(true);
        return defaultAdvisorAutoProxyCreator;
    }

2、修改userRealm()和securityManager()，添加缓存支持

/** * 自定义realm * * @return */
    @Bean
    public UserRealm userRealm() {
        UserRealm userRealm = new UserRealm();
        userRealm.setCredentialsMatcher(hashedCredentialsMatcher());
        userRealm.setCacheManager(ehCacheManager());
        return userRealm;
    }
    
    /** * 安全管理器 * 注：使用shiro-spring-boot-starter 1.4时，返回类型是SecurityManager会报错，直接引用shiro-spring则不报错 * * @return */
    @Bean
    public DefaultWebSecurityManager securityManager() {
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        securityManager.setRealm(userRealm());
        securityManager.setCacheManager(ehCacheManager());
        return securityManager;
    }

# 五、添加EhcacheConfig类 #

在com.songguoliang.springboot.configuration包下添加EhcacheConfig配置类：

package com.songguoliang.springboot.configuration;
    
    import org.springframework.cache.ehcache.EhCacheManagerFactoryBean;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    /** * @Description * @Author sgl * @Date 2018-06-15 11:45 */
    @Configuration
    public class EhcacheConfig { 
         /** * 设置为共享模式 * @return */
        @Bean
        public EhCacheManagerFactoryBean ehCacheManagerFactoryBean() {
            EhCacheManagerFactoryBean cacheManagerFactoryBean = new EhCacheManagerFactoryBean();
            cacheManagerFactoryBean.setShared(true);
            return cacheManagerFactoryBean;
        }
    }

# 六、修改UserRealm类，添加@Lazy注解延迟注入service #

//省略代码……
    
    /** * 注意此处需要添加@Lazy注解，否则SysUserService缓存注解、事务注解不生效 */
    @Autowired
    @Lazy
    private SysUserService sysUserService;
    
    @Autowired
    @Lazy
    private SysPermissionService sysPermissionService;
    
    //省略代码……

# 七、注意 #

至此，我们以将shiro和ehcache集成完毕，使用的是shiro框架提供的缓存管理器，有个需要特别注意的是，**UserRealm里注入的SysUserService等service，需要延迟注入，所以都要添加@Lazy注解(如果不加需要自己延迟注入)，否则会导致该service里的@Cacheable缓存注解、@Transactional事务注解等失效**。

源码：  
[github][]  
[码云][Link 1]

[Spring Boot_Spring Boot_shiro]: https://blog.csdn.net/gnail_oug/article/details/80662553
[github]: https://github.com/itinypocket/spring-boot-study/tree/master/spring-boot-shiro-ehcache-shiro
[Link 1]: https://gitee.com/itinypocket/spring-boot-study/tree/master/spring-boot-shiro-ehcache-shiro