apache shiro使用nginx集群如何解决cache共享

如果要实现集群共享cache，我们就不能用shiro默认的方式处理了。

之前在我的项目当中使用的cacheManager:

<bean id="cacheManager" class="org.apache.shiro.cache.MemoryConstrainedCacheManager" />

 <!-- Shiro 配置 --><bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">    <property name="sessionMode" value="native"></property>    <property name="sessionManager" ref="sessionManager"/><property name="cacheManager" ref="cacheManager"/><property name="realm" ref="shiroDbRealm" /></bean>

现在需要做出一些修改：

<bean id="cacheManager" class="com.xinding.travel.security.RedisCacheManager" ><property name="shiroCacheManager" ref="jedisShiroCacheManager"/></bean>

<!-- shiro 缓存实现，对ShiroCacheManager，我是采用redis的实现 --><bean id="jedisShiroCacheManager" class="com.xinding.travel.security.JedisShiroCacheManager"><property name="redisManager" ref="redisManager"/></bean>

RedisCacheManager:

import org.apache.shiro.cache.Cache;import org.apache.shiro.cache.CacheException;import org.apache.shiro.cache.CacheManager;/** * Created by Maggie on 2017/7/14. */public class RedisCacheManager implements CacheManager {    private ShiroCacheManager shiroCacheManager;    @Override    public <K, V> Cache<K, V> getCache(String s) throws CacheException {        return getShiroCacheManager().getCache(s);    }    public ShiroCacheManager getShiroCacheManager() {        return shiroCacheManager;    }    public void setShiroCacheManager(ShiroCacheManager shiroCacheManager) {        this.shiroCacheManager = shiroCacheManager;    }}

JedisShiroCacheManager:

import org.apache.shiro.cache.Cache;/** * Created by Maggie on 2017/7/14. */public class JedisShiroCacheManager implements ShiroCacheManager {    public RedisManager getRedisManager() {        return redisManager;    }    public void setRedisManager(RedisManager redisManager) {        this.redisManager = redisManager;    }    private RedisManager redisManager;    @Override    public <K, V> Cache<K, V> getCache(String name) {        return new JedisShiroCache<K, V>(name, getRedisManager());    }}

JedisShiroCache:

import org.apache.shiro.cache.Cache;import org.apache.shiro.cache.CacheException;import java.util.Collection;import java.util.Set;/** * Created by Maggie on 2017/7/14. */public class JedisShiroCache<K, V> implements Cache<K, V> {    /**     * 为了不和其他的缓存混淆，采用追加前缀方式以作区分     */    private static final String REDIS_SHIRO_CACHE = "shiro_redis_session:";    private RedisManager redisManager;    private String name;    public JedisShiroCache(String name, RedisManager redisManager) {        this.name = name;        this.redisManager = redisManager;    }    @Override    public V get(K k) throws CacheException {        byte[] byteKey = SerializeUtil.serialize(buildCacheKey(k));        byte[] byteValue = new byte[0];        try {            byteValue =redisManager.queryObjectByKey(byteKey);        } catch (Exception e) {            e.printStackTrace();        }        return (V) SerializeUtil.deserialize(byteValue);    }    @Override    public V put(K k, V v) throws CacheException {        V previos = get(k);        try {            redisManager.insertObject(k.toString(),SerializeUtil.serialize(v),0);        } catch (Exception e) {            e.printStackTrace();        }        return previos;    }    @Override    public V remove(K k) throws CacheException {        V previos = get(k);        try {            redisManager.deleteObject(k.toString());        } catch (Exception e) {            e.printStackTrace();        }        return previos;    }    @Override    public void clear() throws CacheException {    }    @Override    public int size() {        return 0;    }    @Override    public Set<K> keys() {        return null;    }    @Override    public Collection<V> values() {        return null;    }    private String buildCacheKey(Object key) {        return REDIS_SHIRO_CACHE + getName() + ":" + key;    }    public String getName() {        if (name == null)            return "";        return name;    }    public void setName(String name) {        this.name = name;    }}

这样配置之后。我的权限的缓存就会由redis管理。这就满足了shiro集群的要求了。