springboot整合shiro添加缓存

布满荆棘的人生 2024-03-30 16:08 42阅读 0赞

ehcache\\redis

1.  增加缓存后的作用

> 用来减轻数据库的访问压力。从而提高系统的访问速度  
> 使用cacheManager

1.  增加缓存后的结构图  
    ![20220904142930.png][]
2.  代码具体实现 EHcache

> 增加pom文件中shiro和ehcache之间的依赖关系

//增加shiro与ehcache之间的依赖关系
                    <dependency>
    			<groupId>org.apache.shiro</groupId>
    			<artifactId>shiro-ehcache</artifactId>
    			<version>1.9.1</version>
    		</dependency>

> 增加 配置文件中realms 自定义文件缓存开启代码新增编写

@Bean
        public MyRealm myRealm(){
        
            MyRealm  myRealm = new MyRealm();
            //此处添加认证器 及 散列次数
            //HashedCredentialsMatcher credentialsMatcher = new HashedCredentialsMatcher();
            //credentialsMatcher.setHashAlgorithmName("md5");
            // 2.1、设置 散列次数
            //credentialsMatcher.setHashIterations(12);
    
            //myRealm.setCredentialsMatcher(credentialsMatcher);
    
            //增加缓存优化新增
            myRealm.setCacheManager(new EhCacheManager());
            myRealm.setCachingEnabled(true);//设置全局缓存开启
            myRealm.setAuthenticationCachingEnabled(true);// 开启缓存-针对认证功能
            myRealm.setAuthorizationCachingEnabled(true);//开启授权缓存
            myRealm.setAuthenticationCacheName("authenticateName");//开启认证名字全称
            myRealm.setAuthorizationCacheName("authorizationName");//开启授权名字全称
            return myRealm;
        }

1.  代码实现缓存redis

> 1、增加redis 万Pom.、xml jar

<dependency>
    			<groupId>org.projectlombok</groupId>
    			<artifactId>lombok</artifactId>
    		</dependency>
    		
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-data-redis</artifactId>
    		</dependency>

> 2、新创建RedisCacheManager.java文件

/**
     * 实现cacheManager
     */
    public class RedisCacheManager implements CacheManager {
        
        @Override
        public <K, V> Cache<K, V> getCache(String s) throws CacheException {
        
            return new RedisCache<K,V>();
        }
    }

> > 2.1、创建RedisCache 部分文件

public class RedisCache<K,V> implements Cache<K,V> {
        
        private String cacheName;
    
        public RedisCache(String cacheName) {
        
            this.cacheName = cacheName;
        }
    
        public RedisCache() {
        
        }
    
        @Autowired
        private RedisTemplate redisTemplate;
        @Override
        public V get(K k) throws CacheException {
        
            redisTemplate.setKeySerializer(new StringRedisSerializer());
            Object o = redisTemplate.opsForHash().get(this.cacheName,k.toString());
            return (V) o;
        }
    
        @Override
        public V put(K k, V v) throws CacheException {
        
            redisTemplate.setKeySerializer(new StringRedisSerializer());
            redisTemplate.opsForHash().put(this.cacheName,k.toString(),v);
            return null;
        }
    
        @Override
        public V remove(K k) throws CacheException {
        
            redisTemplate.opsForHash().delete(this.cacheName,k.toString());
            return null;
        }
    ....此处略去

> 3、新增configure文件realms文件内容

@Bean
        public MyRealm myRealm(){
        
            MyRealm  myRealm = new MyRealm();
            //此处添加认证器 及 散列次数
            //HashedCredentialsMatcher credentialsMatcher = new HashedCredentialsMatcher();
            //credentialsMatcher.setHashAlgorithmName("md5");
            // 2.1、设置 散列次数
            //credentialsMatcher.setHashIterations(12);
    
            //myRealm.setCredentialsMatcher(credentialsMatcher);
    
            //增加缓存优化新增
            myRealm.setCacheManager(new RedisCacheManager());
            myRealm.setCachingEnabled(true);//设置全局缓存开启
            myRealm.setAuthenticationCachingEnabled(true);// 开启缓存-针对认证功能
            myRealm.setAuthorizationCachingEnabled(true);//开启授权缓存
            myRealm.setAuthenticationCacheName("authenticateName");//开启认证名字全称
            myRealm.setAuthorizationCacheName("authorizationName");//开启授权名字全称
            return myRealm;
        }

至此，springboot整合shiro和整合缓存管理器ehcache与redis完成。

[20220904142930.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/30/ed6612e6d1524ab6b0027983eded6107.png