Shiro使用redis作为缓存(springboot)(十一)

心已赠人 2022-11-20 00:59 218阅读 0赞

原文地址，转载请注明出处： https://blog.csdn.net/qq\_34021712/article/details/80791219 ©王赛超

之前写过一篇博客,使用的一个开源项目,实现了redis作为缓存 缓存用户的权限 和 session信息,还有两个功能没有修改,一个是用户并发登录限制,一个是用户密码错误次数.本篇中几个类 也是使用的开源项目中的类,只不过是拿出来了,redis单独做的配置,方便进行优化。

整合过程  
1.首先是整合Redis  
Redis客户端使用的是RedisTemplate,自己写了一个序列化工具继承RedisSerializer

SerializeUtils.java

package com.springboot.test.shiro.global.utils;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.data.redis.serializer.RedisSerializer;
    import org.springframework.data.redis.serializer.SerializationException;
    
    import java.io.*;
    
    /**
     * @author: wangsaichao
     * @date: 2018/6/20
     * @description: redis的value序列化工具
     */
    public class SerializeUtils implements RedisSerializer { 
    
        private static Logger logger = LoggerFactory.getLogger(SerializeUtils.class);
    
        public static boolean isEmpty(byte[] data) { 
            return (data == null || data.length == 0);
        }
    
        /**
         * 序列化
         * @param object
         * @return
         * @throws SerializationException
         */
        @Override
        public byte[] serialize(Object object) throws SerializationException { 
            byte[] result = null;
    
            if (object == null) { 
                return new byte[0];
            }
            try (
                    ByteArrayOutputStream byteStream = new ByteArrayOutputStream(128);
                    ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteStream)
            ){ 
    
                if (!(object instanceof Serializable)) { 
                    throw new IllegalArgumentException(SerializeUtils.class.getSimpleName() + " requires a Serializable payload " +
                            "but received an object of type [" + object.getClass().getName() + "]");
                }
    
                objectOutputStream.writeObject(object);
                objectOutputStream.flush();
                result =  byteStream.toByteArray();
            } catch (Exception ex) { 
                logger.error("Failed to serialize",ex);
            }
            return result;
        }
    
        /**
         * 反序列化
         * @param bytes
         * @return
         * @throws SerializationException
         */
        @Override
        public Object deserialize(byte[] bytes) throws SerializationException { 
    
            Object result = null;
    
            if (isEmpty(bytes)) { 
                return null;
            }
    
            try (
                    ByteArrayInputStream byteStream = new ByteArrayInputStream(bytes);
                    ObjectInputStream objectInputStream = new ObjectInputStream(byteStream)
            ){ 
                result = objectInputStream.readObject();
            } catch (Exception e) { 
                logger.error("Failed to deserialize",e);
            }
            return result;
        }
    
    }

RedisConfig.java

package com.springboot.test.shiro.config;
    
    import com.springboot.test.shiro.global.utils.SerializeUtils;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.data.redis.connection.RedisConnectionFactory;
    import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
    import org.springframework.data.redis.core.RedisTemplate;
    import org.springframework.data.redis.serializer.StringRedisSerializer;
    import redis.clients.jedis.JedisPoolConfig;
    
    /**
     * @author: wangsaichao
     * @date: 2017/11/23
     * @description: redis配置
     */
    @Configuration
    public class RedisConfig { 
    
        /**
         * redis地址
         */
        @Value("${spring.redis.host}")
        private String host;
    
        /**
         * redis端口号
         */
        @Value("${spring.redis.port}")
        private Integer port;
    
        /**
         * redis密码
         */
        @Value("${spring.redis.password}")
        private String password;
    
        /**
         * JedisPoolConfig 连接池
         * @return
         */
        @Bean
        public JedisPoolConfig jedisPoolConfig(){ 
            JedisPoolConfig jedisPoolConfig=new JedisPoolConfig();
            //最大空闲数
            jedisPoolConfig.setMaxIdle(300);
            //连接池的最大数据库连接数
            jedisPoolConfig.setMaxTotal(1000);
            //最大建立连接等待时间
            jedisPoolConfig.setMaxWaitMillis(1000);
            //逐出连接的最小空闲时间 默认1800000毫秒(30分钟)
            jedisPoolConfig.setMinEvictableIdleTimeMillis(300000);
            //每次逐出检查时 逐出的最大数目 如果为负数就是 : 1/abs(n), 默认3
            jedisPoolConfig.setNumTestsPerEvictionRun(10);
            //逐出扫描的时间间隔(毫秒) 如果为负数,则不运行逐出线程, 默认-1
            jedisPoolConfig.setTimeBetweenEvictionRunsMillis(30000);
            //是否在从池中取出连接前进行检验,如果检验失败,则从池中去除连接并尝试取出另一个
            jedisPoolConfig.setTestOnBorrow(true);
            //在空闲时检查有效性, 默认false
            jedisPoolConfig.setTestWhileIdle(true);
            return jedisPoolConfig;
        }
    
        /**
         * 配置工厂
         * @param jedisPoolConfig
         * @return
         */
        @Bean
        public JedisConnectionFactory jedisConnectionFactory(JedisPoolConfig jedisPoolConfig){ 
            JedisConnectionFactory jedisConnectionFactory=new JedisConnectionFactory();
            //连接池
            jedisConnectionFactory.setPoolConfig(jedisPoolConfig);
            //IP地址
            jedisConnectionFactory.setHostName(host);
            //端口号
            jedisConnectionFactory.setPort(port);
            //如果Redis设置有密码
            jedisConnectionFactory.setPassword(password);
            //客户端超时时间单位是毫秒
            jedisConnectionFactory.setTimeout(5000);
            return jedisConnectionFactory;
        }
    
        /**
         * shiro redis缓存使用的模板
         * 实例化 RedisTemplate 对象
         * @return
         */
        @Bean("shiroRedisTemplate")
        public RedisTemplate shiroRedisTemplate(RedisConnectionFactory redisConnectionFactory) { 
    
            RedisTemplate redisTemplate = new RedisTemplate();
            redisTemplate.setKeySerializer(new StringRedisSerializer());
            redisTemplate.setHashKeySerializer(new StringRedisSerializer());
            redisTemplate.setHashValueSerializer(new SerializeUtils());
            redisTemplate.setValueSerializer(new SerializeUtils());
            //开启事务
            //stringRedisTemplate.setEnableTransactionSupport(true);
            redisTemplate.setConnectionFactory(redisConnectionFactory);
            return redisTemplate;
        }
    
    }

RedisManager.java

package com.springboot.test.shiro.config.shiro;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.dao.DataAccessException;
    import org.springframework.data.redis.connection.RedisConnection;
    import org.springframework.data.redis.core.*;
    import org.springframework.util.CollectionUtils;
    
    import java.util.*;
    import java.util.concurrent.TimeUnit;
    
    /**
     *
     * @author wangsaichao
     * 基于spring和redis的redisTemplate工具类
     */
    public class RedisManager { 
    
        @Autowired
        private RedisTemplate<String, Object> redisTemplate;
    
        //=============================common============================
        /**
         * 指定缓存失效时间
         * @param key 键
         * @param time 时间(秒)
         */
        public void expire(String key,long time){ 
            redisTemplate.expire(key, time, TimeUnit.SECONDS);
        }
    
        /**
         * 判断key是否存在
         * @param key 键
         * @return true 存在 false不存在
         */
        public Boolean hasKey(String key){ 
            return redisTemplate.hasKey(key);
        }
    
        /**
         * 删除缓存
         * @param key 可以传一个值 或多个
         */
        @SuppressWarnings("unchecked")
        public void del(String ... key){ 
            if(key!=null&&key.length>0){ 
                if(key.length==1){ 
                    redisTemplate.delete(key[0]);
                }else{ 
                    redisTemplate.delete(CollectionUtils.arrayToList(key));
                }
            }
        }
    
        /**
         * 批量删除key
         * @param keys
         */
        public void del(Collection keys){ 
            redisTemplate.delete(keys);
        }
    
        //============================String=============================
        /**
         * 普通缓存获取
         * @param key 键
         * @return 值
         */
        public Object get(String key){ 
            return redisTemplate.opsForValue().get(key);
        }
    
        /**
         * 普通缓存放入
         * @param key 键
         * @param value 值
         */
        public void set(String key,Object value) { 
            redisTemplate.opsForValue().set(key, value);
        }
    
        /**
         * 普通缓存放入并设置时间
         * @param key 键
         * @param value 值
         * @param time 时间(秒) time要大于0 如果time小于等于0 将设置无限期
         */
        public void set(String key,Object value,long time){ 
            if(time>0){ 
                redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
            }else{ 
                set(key, value);
            }
        }
    
        /**
         * 使用scan命令 查询某些前缀的key
         * @param key
         * @return
         */
        public Set<String> scan(String key){ 
            Set<String> execute = this.redisTemplate.execute(new RedisCallback<Set<String>>() { 
    
                @Override
                public Set<String> doInRedis(RedisConnection connection) throws DataAccessException { 
    
                    Set<String> binaryKeys = new HashSet<>();
    
                    Cursor<byte[]> cursor = connection.scan(new ScanOptions.ScanOptionsBuilder().match(key).count(1000).build());
                    while (cursor.hasNext()) { 
                        binaryKeys.add(new String(cursor.next()));
                    }
                    return binaryKeys;
                }
            });
            return execute;
        }
    
        /**
         * 使用scan命令 查询某些前缀的key 有多少个
         * 用来获取当前session数量,也就是在线用户
         * @param key
         * @return
         */
        public Long scanSize(String key){ 
            long dbSize = this.redisTemplate.execute(new RedisCallback<Long>() { 
    
                @Override
                public Long doInRedis(RedisConnection connection) throws DataAccessException { 
                    long count = 0L;
                    Cursor<byte[]> cursor = connection.scan(ScanOptions.scanOptions().match(key).count(1000).build());
                    while (cursor.hasNext()) { 
                        cursor.next();
                        count++;
                    }
                    return count;
                }
            });
            return dbSize;
        }
    }

2.使用Redis作为缓存需要shiro重写cache、cacheManager、SessionDAO  
RedisCache.java

package com.springboot.test.shiro.config.shiro;
    
    import com.springboot.test.shiro.global.exceptions.PrincipalIdNullException;
    import com.springboot.test.shiro.global.exceptions.PrincipalInstanceException;
    import org.apache.shiro.cache.Cache;
    import org.apache.shiro.cache.CacheException;
    import org.apache.shiro.subject.PrincipalCollection;
    import org.apache.shiro.util.CollectionUtils;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import java.lang.reflect.InvocationTargetException;
    import java.lang.reflect.Method;
    import java.util.*;
    
    /**
     * @author: wangsaichao
     * @date: 2018/6/22
     * @description: 参考 shiro-redis 开源项目 Git地址 https://github.com/alexxiyang/shiro-redis
     */
    public class RedisCache<K, V> implements Cache<K, V> { 
    
        private static Logger logger = LoggerFactory.getLogger(RedisCache.class);
    
        private RedisManager redisManager;
        private String keyPrefix = "";
        private int expire = 0;
        private String principalIdFieldName = RedisCacheManager.DEFAULT_PRINCIPAL_ID_FIELD_NAME;
    
        /**
         * Construction
         * @param redisManager
         */
        public RedisCache(RedisManager redisManager, String prefix, int expire, String principalIdFieldName) { 
            if (redisManager == null) { 
                throw new IllegalArgumentException("redisManager cannot be null.");
            }
            this.redisManager = redisManager;
            if (prefix != null && !"".equals(prefix)) { 
                this.keyPrefix = prefix;
            }
            if (expire != -1) { 
                this.expire = expire;
            }
            if (principalIdFieldName != null && !"".equals(principalIdFieldName)) { 
                this.principalIdFieldName = principalIdFieldName;
            }
        }
    
        @Override
        public V get(K key) throws CacheException { 
            logger.debug("get key [{}]",key);
    
            if (key == null) { 
                return null;
            }
    
            try { 
                String redisCacheKey = getRedisCacheKey(key);
                Object rawValue = redisManager.get(redisCacheKey);
                if (rawValue == null) { 
                    return null;
                }
                V value = (V) rawValue;
                return value;
            } catch (Exception e) { 
                throw new CacheException(e);
            }
        }
    
        @Override
        public V put(K key, V value) throws CacheException { 
            logger.debug("put key [{}]",key);
            if (key == null) { 
                logger.warn("Saving a null key is meaningless, return value directly without call Redis.");
                return value;
            }
            try { 
                String redisCacheKey = getRedisCacheKey(key);
                redisManager.set(redisCacheKey, value != null ? value : null, expire);
                return value;
            } catch (Exception e) { 
                throw new CacheException(e);
            }
        }
    
        @Override
        public V remove(K key) throws CacheException { 
            logger.debug("remove key [{}]",key);
            if (key == null) { 
                return null;
            }
            try { 
                String redisCacheKey = getRedisCacheKey(key);
                Object rawValue = redisManager.get(redisCacheKey);
                V previous = (V) rawValue;
                redisManager.del(redisCacheKey);
                return previous;
            } catch (Exception e) { 
                throw new CacheException(e);
            }
        }
    
        private String getRedisCacheKey(K key) { 
            if (key == null) { 
                return null;
            }
            return this.keyPrefix + getStringRedisKey(key);
        }
    
        private String getStringRedisKey(K key) { 
            String redisKey;
            if (key instanceof PrincipalCollection) { 
                redisKey = getRedisKeyFromPrincipalIdField((PrincipalCollection) key);
            } else { 
                redisKey = key.toString();
            }
            return redisKey;
        }
    
        private String getRedisKeyFromPrincipalIdField(PrincipalCollection key) { 
            String redisKey;
            Object principalObject = key.getPrimaryPrincipal();
            Method pincipalIdGetter = null;
            Method[] methods = principalObject.getClass().getDeclaredMethods();
            for (Method m:methods) { 
                if (RedisCacheManager.DEFAULT_PRINCIPAL_ID_FIELD_NAME.equals(this.principalIdFieldName)
                        && ("getAuthCacheKey".equals(m.getName()) || "getId".equals(m.getName()))) { 
                    pincipalIdGetter = m;
                    break;
                }
                if (m.getName().equals("get" + this.principalIdFieldName.substring(0, 1).toUpperCase() + this.principalIdFieldName.substring(1))) { 
                    pincipalIdGetter = m;
                    break;
                }
            }
            if (pincipalIdGetter == null) { 
                throw new PrincipalInstanceException(principalObject.getClass(), this.principalIdFieldName);
            }
    
            try { 
                Object idObj = pincipalIdGetter.invoke(principalObject);
                if (idObj == null) { 
                    throw new PrincipalIdNullException(principalObject.getClass(), this.principalIdFieldName);
                }
                redisKey = idObj.toString();
            } catch (IllegalAccessException e) { 
                throw new PrincipalInstanceException(principalObject.getClass(), this.principalIdFieldName, e);
            } catch (InvocationTargetException e) { 
                throw new PrincipalInstanceException(principalObject.getClass(), this.principalIdFieldName, e);
            }
    
            return redisKey;
        }
    
    
        @Override
        public void clear() throws CacheException { 
            logger.debug("clear cache");
            Set<String> keys = null;
            try { 
                keys = redisManager.scan(this.keyPrefix + "*");
            } catch (Exception e) { 
                logger.error("get keys error", e);
            }
            if (keys == null || keys.size() == 0) { 
                return;
            }
            for (String key: keys) { 
                redisManager.del(key);
            }
        }
    
        @Override
        public int size() { 
            Long longSize = 0L;
            try { 
                longSize = new Long(redisManager.scanSize(this.keyPrefix + "*"));
            } catch (Exception e) { 
                logger.error("get keys error", e);
            }
            return longSize.intValue();
        }
    
        @SuppressWarnings("unchecked")
        @Override
        public Set<K> keys() { 
            Set<String> keys = null;
            try { 
                keys = redisManager.scan(this.keyPrefix + "*");
            } catch (Exception e) { 
                logger.error("get keys error", e);
                return Collections.emptySet();
            }
    
            if (CollectionUtils.isEmpty(keys)) { 
                return Collections.emptySet();
            }
    
            Set<K> convertedKeys = new HashSet<K>();
            for (String key:keys) { 
                try { 
                    convertedKeys.add((K) key);
                } catch (Exception e) { 
                    logger.error("deserialize keys error", e);
                }
            }
            return convertedKeys;
        }
    
        @Override
        public Collection<V> values() { 
            Set<String> keys = null;
            try { 
                keys = redisManager.scan(this.keyPrefix + "*");
            } catch (Exception e) { 
                logger.error("get values error", e);
                return Collections.emptySet();
            }
    
            if (CollectionUtils.isEmpty(keys)) { 
                return Collections.emptySet();
            }
    
            List<V> values = new ArrayList<V>(keys.size());
            for (String key : keys) { 
                V value = null;
                try { 
                    value = (V) redisManager.get(key);
                } catch (Exception e) { 
                    logger.error("deserialize values= error", e);
                }
                if (value != null) { 
                    values.add(value);
                }
            }
            return Collections.unmodifiableList(values);
        }
    
        public String getKeyPrefix() { 
            return keyPrefix;
        }
    
        public void setKeyPrefix(String keyPrefix) { 
            this.keyPrefix = keyPrefix;
        }
    
        public String getPrincipalIdFieldName() { 
            return principalIdFieldName;
        }
    
        public void setPrincipalIdFieldName(String principalIdFieldName) { 
            this.principalIdFieldName = principalIdFieldName;
        }
    }

getRedisKeyFromPrincipalIdField()是获取缓存的用户身份信息 和用户权限信息。 里面有一个属性principalIdFieldName 在RedisCacheManager也有这个属性,设置其中一个就可以.是为了给缓存用户身份和权限信息在Redis中的key唯一,登录用户名可能是username 或者 phoneNum 或者是Email中的一个,如 我的User实体类中 有一个 usernane字段,也是登录时候使用的用户名,在redis中缓存的权限信息key 如下, 这个admin 就是 通过getUsername获得的。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2R4eXpoYmI_size_16_color_FFFFFF_t_70_pic_center]  
读取用户权限信息时,还用到两个异常类，如下：  
PrincipalInstanceException.java

package com.springboot.test.shiro.global.exceptions;
    
    /**
     * @author: wangsaichao
     * @date: 2018/6/21
     * @description:
     */
    public class PrincipalInstanceException extends RuntimeException  { 
    
        private static final String MESSAGE = "We need a field to identify this Cache Object in Redis. "
                + "So you need to defined an id field which you can get unique id to identify this principal. "
                + "For example, if you use UserInfo as Principal class, the id field maybe userId, userName, email, etc. "
                + "For example, getUserId(), getUserName(), getEmail(), etc.\n"
                + "Default value is authCacheKey or id, that means your principal object has a method called \"getAuthCacheKey()\" or \"getId()\"";
    
        public PrincipalInstanceException(Class clazz, String idMethodName) { 
            super(clazz + " must has getter for field: " +  idMethodName + "\n" + MESSAGE);
        }
    
        public PrincipalInstanceException(Class clazz, String idMethodName, Exception e) { 
            super(clazz + " must has getter for field: " +  idMethodName + "\n" + MESSAGE, e);
        }
    }

PrincipalIdNullException.java

package com.springboot.test.shiro.global.exceptions;
    
    /**
     * @author: wangsaichao
     * @date: 2018/6/21
     * @description:
     */
    public class PrincipalIdNullException extends RuntimeException  { 
    
        private static final String MESSAGE = "Principal Id shouldn't be null!";
    
        public PrincipalIdNullException(Class clazz, String idMethodName) { 
            super(clazz + " id field: " +  idMethodName + ", value is null\n" + MESSAGE);
        }
    }

RedisCacheManager.java

package com.springboot.test.shiro.config.shiro;
    
    import org.apache.shiro.cache.Cache;
    import org.apache.shiro.cache.CacheException;
    import org.apache.shiro.cache.CacheManager;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    
    import java.util.concurrent.ConcurrentHashMap;
    import java.util.concurrent.ConcurrentMap;
    
    /**
     * @author: wangsaichao
     * @date: 2018/6/22
     * @description: 参考 shiro-redis 开源项目 Git地址 https://github.com/alexxiyang/shiro-redis
     */
    public class RedisCacheManager implements CacheManager { 
    
        private final Logger logger = LoggerFactory.getLogger(RedisCacheManager.class);
    
        /**
         * fast lookup by name map
         */
        private final ConcurrentMap<String, Cache> caches = new ConcurrentHashMap<String, Cache>();
    
        private RedisManager redisManager;
    
        /**
         * expire time in seconds
         */
        private static final int DEFAULT_EXPIRE = 1800;
        private int expire = DEFAULT_EXPIRE;
    
        /**
         * The Redis key prefix for caches
         */
        public static final String DEFAULT_CACHE_KEY_PREFIX = "shiro:cache:";
        private String keyPrefix = DEFAULT_CACHE_KEY_PREFIX;
    
        public static final String DEFAULT_PRINCIPAL_ID_FIELD_NAME = "authCacheKey or id";
        private String principalIdFieldName = DEFAULT_PRINCIPAL_ID_FIELD_NAME;
    
        @Override
        public <K, V> Cache<K, V> getCache(String name) throws CacheException { 
            logger.debug("get cache, name={}",name);
    
            Cache cache = caches.get(name);
    
            if (cache == null) { 
                cache = new RedisCache<K, V>(redisManager,keyPrefix + name + ":", expire, principalIdFieldName);
                caches.put(name, cache);
            }
            return cache;
        }
    
        public RedisManager getRedisManager() { 
            return redisManager;
        }
    
        public void setRedisManager(RedisManager redisManager) { 
            this.redisManager = redisManager;
        }
    
        public String getKeyPrefix() { 
            return keyPrefix;
        }
    
        public void setKeyPrefix(String keyPrefix) { 
            this.keyPrefix = keyPrefix;
        }
    
        public int getExpire() { 
            return expire;
        }
    
        public void setExpire(int expire) { 
            this.expire = expire;
        }
    
        public String getPrincipalIdFieldName() { 
            return principalIdFieldName;
        }
    
        public void setPrincipalIdFieldName(String principalIdFieldName) { 
            this.principalIdFieldName = principalIdFieldName;
        }
    }

RedisSessionDAO.java

package com.springboot.test.shiro.config.shiro;
    
    import org.apache.shiro.session.Session;
    import org.apache.shiro.session.UnknownSessionException;
    import org.apache.shiro.session.mgt.ValidatingSession;
    import org.apache.shiro.session.mgt.eis.AbstractSessionDAO;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    
    import java.io.Serializable;
    import java.util.*;
    
    /**
     * @author: wangsaichao
     * @date: 2018/6/22
     * @description: 参考 shiro-redis 开源项目 Git地址 https://github.com/alexxiyang/shiro-redis
     */
    public class RedisSessionDAO extends AbstractSessionDAO { 
    
        private static Logger logger = LoggerFactory.getLogger(RedisSessionDAO.class);
    
        private static final String DEFAULT_SESSION_KEY_PREFIX = "shiro:session:";
        private String keyPrefix = DEFAULT_SESSION_KEY_PREFIX;
    
        private static final long DEFAULT_SESSION_IN_MEMORY_TIMEOUT = 1000L;
        /**
         * doReadSession be called about 10 times when login.
         * Save Session in ThreadLocal to resolve this problem. sessionInMemoryTimeout is expiration of Session in ThreadLocal.
         * The default value is 1000 milliseconds (1s).
         * Most of time, you don't need to change it.
         */
        private long sessionInMemoryTimeout = DEFAULT_SESSION_IN_MEMORY_TIMEOUT;
    
        /**
         * expire time in seconds
         */
        private static final int DEFAULT_EXPIRE = -2;
        private static final int NO_EXPIRE = -1;
    
        /**
         * Please make sure expire is longer than sesion.getTimeout()
         */
        private int expire = DEFAULT_EXPIRE;
    
        private static final int MILLISECONDS_IN_A_SECOND = 1000;
    
        private RedisManager redisManager;
        private static ThreadLocal sessionsInThread = new ThreadLocal();
    
        @Override
        public void update(Session session) throws UnknownSessionException { 
            //如果会话过期/停止 没必要再更新了
            try { 
                if (session instanceof ValidatingSession && !((ValidatingSession) session).isValid()) { 
                    return;
                }
    
                if (session instanceof ShiroSession) { 
                    // 如果没有主要字段(除lastAccessTime以外其他字段)发生改变
                    ShiroSession ss = (ShiroSession) session;
                    if (!ss.isChanged()) { 
                        return;
                    }
                    //如果没有返回 证明有调用 setAttribute往redis 放的时候永远设置为false
                    ss.setChanged(false);
                }
    
                this.saveSession(session);
            } catch (Exception e) { 
                logger.warn("update Session is failed", e);
            }
        }
    
        /**
         * save session
         * @param session
         * @throws UnknownSessionException
         */
        private void saveSession(Session session) throws UnknownSessionException { 
            if (session == null || session.getId() == null) { 
                logger.error("session or session id is null");
                throw new UnknownSessionException("session or session id is null");
            }
            String key = getRedisSessionKey(session.getId());
            if (expire == DEFAULT_EXPIRE) { 
                this.redisManager.set(key, session, (int) (session.getTimeout() / MILLISECONDS_IN_A_SECOND));
                return;
            }
            if (expire != NO_EXPIRE && expire * MILLISECONDS_IN_A_SECOND < session.getTimeout()) { 
                logger.warn("Redis session expire time: "
                        + (expire * MILLISECONDS_IN_A_SECOND)
                        + " is less than Session timeout: "
                        + session.getTimeout()
                        + " . It may cause some problems.");
            }
            this.redisManager.set(key, session, expire);
        }
    
        @Override
        public void delete(Session session) { 
            if (session == null || session.getId() == null) { 
                logger.error("session or session id is null");
                return;
            }
            try { 
                redisManager.del(getRedisSessionKey(session.getId()));
            } catch (Exception e) { 
                logger.error("delete session error. session id= {}",session.getId());
            }
        }
    
        @Override
        public Collection<Session> getActiveSessions() { 
            Set<Session> sessions = new HashSet<Session>();
            try { 
                Set<String> keys = redisManager.scan(this.keyPrefix + "*");
                if (keys != null && keys.size() > 0) { 
                    for (String key:keys) { 
                        Session s = (Session) redisManager.get(key);
                        sessions.add(s);
                    }
                }
            } catch (Exception e) { 
                logger.error("get active sessions error.");
            }
            return sessions;
        }
    
        public Long getActiveSessionsSize() { 
            Long size = 0L;
            try { 
                size = redisManager.scanSize(this.keyPrefix + "*");
            } catch (Exception e) { 
                logger.error("get active sessions error.");
            }
            return size;
        }
    
        @Override
        protected Serializable doCreate(Session session) { 
            if (session == null) { 
                logger.error("session is null");
                throw new UnknownSessionException("session is null");
            }
            Serializable sessionId = this.generateSessionId(session);
            this.assignSessionId(session, sessionId);
            this.saveSession(session);
            return sessionId;
        }
    
        @Override
        protected Session doReadSession(Serializable sessionId) { 
            if (sessionId == null) { 
                logger.warn("session id is null");
                return null;
            }
            Session s = getSessionFromThreadLocal(sessionId);
    
            if (s != null) { 
                return s;
            }
    
            logger.debug("read session from redis");
            try { 
                s = (Session) redisManager.get(getRedisSessionKey(sessionId));
                setSessionToThreadLocal(sessionId, s);
            } catch (Exception e) { 
                logger.error("read session error. settionId= {}",sessionId);
            }
            return s;
        }
    
        private void setSessionToThreadLocal(Serializable sessionId, Session s) { 
            Map<Serializable, SessionInMemory> sessionMap = (Map<Serializable, SessionInMemory>) sessionsInThread.get();
            if (sessionMap == null) { 
                sessionMap = new HashMap<Serializable, SessionInMemory>();
                sessionsInThread.set(sessionMap);
            }
            SessionInMemory sessionInMemory = new SessionInMemory();
            sessionInMemory.setCreateTime(new Date());
            sessionInMemory.setSession(s);
            sessionMap.put(sessionId, sessionInMemory);
        }
    
        private Session getSessionFromThreadLocal(Serializable sessionId) { 
            Session s = null;
    
            if (sessionsInThread.get() == null) { 
                return null;
            }
    
            Map<Serializable, SessionInMemory> sessionMap = (Map<Serializable, SessionInMemory>) sessionsInThread.get();
            SessionInMemory sessionInMemory = sessionMap.get(sessionId);
            if (sessionInMemory == null) { 
                return null;
            }
            Date now = new Date();
            long duration = now.getTime() - sessionInMemory.getCreateTime().getTime();
            if (duration < sessionInMemoryTimeout) { 
                s = sessionInMemory.getSession();
                logger.debug("read session from memory");
            } else { 
                sessionMap.remove(sessionId);
            }
    
            return s;
        }
    
        private String getRedisSessionKey(Serializable sessionId) { 
            return this.keyPrefix + sessionId;
        }
    
        public RedisManager getRedisManager() { 
            return redisManager;
        }
    
        public void setRedisManager(RedisManager redisManager) { 
            this.redisManager = redisManager;
        }
    
        public String getKeyPrefix() { 
            return keyPrefix;
        }
    
        public void setKeyPrefix(String keyPrefix) { 
            this.keyPrefix = keyPrefix;
        }
    
        public long getSessionInMemoryTimeout() { 
            return sessionInMemoryTimeout;
        }
    
        public void setSessionInMemoryTimeout(long sessionInMemoryTimeout) { 
            this.sessionInMemoryTimeout = sessionInMemoryTimeout;
        }
    
        public int getExpire() { 
            return expire;
        }
    
        public void setExpire(int expire) { 
            this.expire = expire;
        }
    }

3.Shiro配置  
ShiroConfig.java

package com.springboot.test.shiro.config;
    
    import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;
    import com.springboot.test.shiro.config.shiro.*;
    import org.apache.shiro.codec.Base64;
    import org.apache.shiro.session.SessionListener;
    import org.apache.shiro.session.mgt.SessionManager;
    import org.apache.shiro.session.mgt.eis.JavaUuidSessionIdGenerator;
    import org.apache.shiro.session.mgt.eis.SessionDAO;
    import org.apache.shiro.session.mgt.eis.SessionIdGenerator;
    import org.apache.shiro.spring.LifecycleBeanPostProcessor;
    import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor;
    import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
    import org.apache.shiro.mgt.SecurityManager;
    import org.apache.shiro.web.filter.authc.FormAuthenticationFilter;
    import org.apache.shiro.web.mgt.CookieRememberMeManager;
    import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
    import org.apache.shiro.web.servlet.SimpleCookie;
    import org.apache.shiro.web.session.mgt.DefaultWebSessionManager;
    import org.springframework.beans.factory.annotation.Qualifier;
    import org.springframework.beans.factory.config.MethodInvokingFactoryBean;
    import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
    import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;
    import org.springframework.boot.web.servlet.ErrorPage;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.http.HttpStatus;
    import org.springframework.web.servlet.handler.SimpleMappingExceptionResolver;
    
    import javax.servlet.Filter;
    import java.util.ArrayList;
    import java.util.Collection;
    import java.util.LinkedHashMap;
    import java.util.Properties;
    
    /**
     * @author: wangsaichao
     * @date: 2018/5/10
     * @description: Shiro配置
     */
    @Configuration
    public class ShiroConfig { 
    
    
        /**
         * ShiroFilterFactoryBean 处理拦截资源文件问题。
         * 注意：初始化ShiroFilterFactoryBean的时候需要注入：SecurityManager
         * Web应用中,Shiro可控制的Web请求必须经过Shiro主过滤器的拦截
         * @param securityManager
         * @return
         */
        @Bean(name = "shirFilter")
        public ShiroFilterFactoryBean shiroFilter(@Qualifier("securityManager") SecurityManager securityManager) { 
    
            ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
    
            //必须设置 SecurityManager,Shiro的核心安全接口
            shiroFilterFactoryBean.setSecurityManager(securityManager);
            //这里的/login是后台的接口名,非页面，如果不设置默认会自动寻找Web工程根目录下的"/login.jsp"页面
            shiroFilterFactoryBean.setLoginUrl("/");
            //这里的/index是后台的接口名,非页面,登录成功后要跳转的链接
            shiroFilterFactoryBean.setSuccessUrl("/index");
            //未授权界面,该配置无效，并不会进行页面跳转
            shiroFilterFactoryBean.setUnauthorizedUrl("/unauthorized");
    
            //自定义拦截器限制并发人数,参考博客：
            LinkedHashMap<String, Filter> filtersMap = new LinkedHashMap<>();
            //限制同一帐号同时在线的个数
            filtersMap.put("kickout", kickoutSessionControlFilter());
            //统计登录人数
            shiroFilterFactoryBean.setFilters(filtersMap);
    
            // 配置访问权限 必须是LinkedHashMap，因为它必须保证有序
            // 过滤链定义，从上向下顺序执行，一般将 /**放在最为下边 --> : 这是一个坑，一不小心代码就不好使了
            LinkedHashMap<String, String> filterChainDefinitionMap = new LinkedHashMap<>();
            //配置不登录可以访问的资源，anon 表示资源都可以匿名访问
            //配置记住我或认证通过可以访问的地址
            filterChainDefinitionMap.put("/login", "anon");
            filterChainDefinitionMap.put("/", "anon");
            filterChainDefinitionMap.put("/css/**", "anon");
            filterChainDefinitionMap.put("/js/**", "anon");
            filterChainDefinitionMap.put("/img/**", "anon");
            filterChainDefinitionMap.put("/druid/**", "anon");
            //解锁用户专用 测试用的
            filterChainDefinitionMap.put("/unlockAccount","anon");
            filterChainDefinitionMap.put("/Captcha.jpg","anon");
            //logout是shiro提供的过滤器
            filterChainDefinitionMap.put("/logout", "logout");
            //此时访问/user/delete需要delete权限,在自定义Realm中为用户授权。
            //filterChainDefinitionMap.put("/user/delete", "perms[\"user:delete\"]");
    
            //其他资源都需要认证  authc 表示需要认证才能进行访问 user表示配置记住我或认证通过可以访问的地址
            //如果开启限制同一账号登录,改为 .put("/**", "kickout,user");
            filterChainDefinitionMap.put("/**", "kickout,user");
    
            shiroFilterFactoryBean.setFilterChainDefinitionMap(filterChainDefinitionMap);
    
            return shiroFilterFactoryBean;
        }
    
        /**
         * 配置核心安全事务管理器
         * @return
         */
        @Bean(name="securityManager")
        public SecurityManager securityManager() { 
            DefaultWebSecurityManager securityManager =  new DefaultWebSecurityManager();
            //设置自定义realm.
            securityManager.setRealm(shiroRealm());
            //配置记住我
            securityManager.setRememberMeManager(rememberMeManager());
            //配置redis缓存
            securityManager.setCacheManager(cacheManager());
            //配置自定义session管理，使用redis
            securityManager.setSessionManager(sessionManager());
            return securityManager;
        }
    
        /**
         * 配置Shiro生命周期处理器
         * @return
         */
        @Bean(name = "lifecycleBeanPostProcessor")
        public LifecycleBeanPostProcessor lifecycleBeanPostProcessor() { 
            return new LifecycleBeanPostProcessor();
        }
    
        /**
         *  身份认证realm; (这个需要自己写，账号密码校验；权限等)
         * @return
         */
        @Bean
        public ShiroRealm shiroRealm(){ 
            ShiroRealm shiroRealm = new ShiroRealm();
            shiroRealm.setCachingEnabled(true);
            //启用身份验证缓存，即缓存AuthenticationInfo信息，默认false
            shiroRealm.setAuthenticationCachingEnabled(true);
            //缓存AuthenticationInfo信息的缓存名称 在ehcache-shiro.xml中有对应缓存的配置
            shiroRealm.setAuthenticationCacheName("authenticationCache");
            //启用授权缓存，即缓存AuthorizationInfo信息，默认false
            shiroRealm.setAuthorizationCachingEnabled(true);
            //缓存AuthorizationInfo信息的缓存名称  在ehcache-shiro.xml中有对应缓存的配置
            shiroRealm.setAuthorizationCacheName("authorizationCache");
            //配置自定义密码比较器
            shiroRealm.setCredentialsMatcher(retryLimitHashedCredentialsMatcher());
            return shiroRealm;
        }
    
        /**
         * 必须（thymeleaf页面使用shiro标签控制按钮是否显示）
         * 未引入thymeleaf包，Caused by: java.lang.ClassNotFoundException: org.thymeleaf.dialect.AbstractProcessorDialect
         * @return
         */
        @Bean
        public ShiroDialect shiroDialect() { 
            return new ShiroDialect();
        }
    
        /**
         * 开启shiro 注解模式
         * 可以在controller中的方法前加上注解
         * 如 @RequiresPermissions("userInfo:add")
         * @param securityManager
         * @return
         */
        @Bean
        public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor(@Qualifier("securityManager") SecurityManager securityManager){ 
            AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor = new AuthorizationAttributeSourceAdvisor();
            authorizationAttributeSourceAdvisor.setSecurityManager(securityManager);
            return authorizationAttributeSourceAdvisor;
        }
    
        /**
         * 解决： 无权限页面不跳转 shiroFilterFactoryBean.setUnauthorizedUrl("/unauthorized") 无效
         * shiro的源代码ShiroFilterFactoryBean.Java定义的filter必须满足filter instanceof AuthorizationFilter，
         * 只有perms，roles，ssl，rest，port才是属于AuthorizationFilter，而anon，authcBasic，auchc，user是AuthenticationFilter，
         * 所以unauthorizedUrl设置后页面不跳转 Shiro注解模式下，登录失败与没有权限都是通过抛出异常。
         * 并且默认并没有去处理或者捕获这些异常。在SpringMVC下需要配置捕获相应异常来通知用户信息
         * @return
         */
        @Bean
        public SimpleMappingExceptionResolver simpleMappingExceptionResolver() { 
            SimpleMappingExceptionResolver simpleMappingExceptionResolver=new SimpleMappingExceptionResolver();
            Properties properties=new Properties();
            //这里的 /unauthorized 是页面，不是访问的路径
            properties.setProperty("org.apache.shiro.authz.UnauthorizedException","/unauthorized");
            properties.setProperty("org.apache.shiro.authz.UnauthenticatedException","/unauthorized");
            simpleMappingExceptionResolver.setExceptionMappings(properties);
            return simpleMappingExceptionResolver;
        }
    
        /**
         * 解决spring-boot Whitelabel Error Page
         * @return
         */
        @Bean
        public EmbeddedServletContainerCustomizer containerCustomizer() { 
    
            return new EmbeddedServletContainerCustomizer() { 
                @Override
                public void customize(ConfigurableEmbeddedServletContainer container) { 
    
                    ErrorPage error401Page = new ErrorPage(HttpStatus.UNAUTHORIZED, "/unauthorized.html");
                    ErrorPage error404Page = new ErrorPage(HttpStatus.NOT_FOUND, "/404.html");
                    ErrorPage error500Page = new ErrorPage(HttpStatus.INTERNAL_SERVER_ERROR, "/500.html");
    
                    container.addErrorPages(error401Page, error404Page, error500Page);
                }
            };
        }
    
        /**
         * cookie对象;会话Cookie模板 ,默认为: JSESSIONID 问题: 与SERVLET容器名冲突,重新定义为sid或rememberMe，自定义
         * @return
         */
        @Bean
        public SimpleCookie rememberMeCookie(){ 
            //这个参数是cookie的名称，对应前端的checkbox的name = rememberMe
            SimpleCookie simpleCookie = new SimpleCookie("rememberMe");
            //setcookie的httponly属性如果设为true的话，会增加对xss防护的安全系数。它有以下特点：
            //setcookie()的第七个参数
            //设为true后，只能通过http访问，javascript无法访问
            //防止xss读取cookie
            simpleCookie.setHttpOnly(true);
            simpleCookie.setPath("/");
            //
            simpleCookie.setMaxAge(2592000);
            return simpleCookie;
        }
    
        /**
         * cookie管理对象;记住我功能,rememberMe管理器
         * @return
         */
        @Bean
        public CookieRememberMeManager rememberMeManager(){ 
            CookieRememberMeManager cookieRememberMeManager = new CookieRememberMeManager();
            cookieRememberMeManager.setCookie(rememberMeCookie());
            //rememberMe cookie加密的密钥 建议每个项目都不一样 默认AES算法 密钥长度(128 256 512 位)
            cookieRememberMeManager.setCipherKey(Base64.decode("4AvVhmFLUs0KTA3Kprsdag=="));
            return cookieRememberMeManager;
        }
    
        /**
         * FormAuthenticationFilter 过滤器 过滤记住我
         * @return
         */
        @Bean
        public FormAuthenticationFilter formAuthenticationFilter(){ 
            FormAuthenticationFilter formAuthenticationFilter = new FormAuthenticationFilter();
            //对应前端的checkbox的name = rememberMe
            formAuthenticationFilter.setRememberMeParam("rememberMe");
            return formAuthenticationFilter;
        }
    
        /**
         * shiro缓存管理器;
         * 需要添加到securityManager中
         * @return
         */
        @Bean
        public RedisCacheManager cacheManager(){ 
            RedisCacheManager redisCacheManager = new RedisCacheManager();
            redisCacheManager.setRedisManager(redisManager());
            //redis中针对不同用户缓存
            redisCacheManager.setPrincipalIdFieldName("username");
            //用户权限信息缓存时间
            redisCacheManager.setExpire(200000);
            return redisCacheManager;
        }
    
        /**
         * 让某个实例的某个方法的返回值注入为Bean的实例
         * Spring静态注入
         * @return
         */
        @Bean
        public MethodInvokingFactoryBean getMethodInvokingFactoryBean(){ 
            MethodInvokingFactoryBean factoryBean = new MethodInvokingFactoryBean();
            factoryBean.setStaticMethod("org.apache.shiro.SecurityUtils.setSecurityManager");
            factoryBean.setArguments(new Object[]{ securityManager()});
            return factoryBean;
        }
    
        /**
         * 配置session监听
         * @return
         */
        @Bean("sessionListener")
        public ShiroSessionListener sessionListener(){ 
            ShiroSessionListener sessionListener = new ShiroSessionListener();
            return sessionListener;
        }
    
        /**
         * 配置会话ID生成器
         * @return
         */
        @Bean
        public SessionIdGenerator sessionIdGenerator() { 
            return new JavaUuidSessionIdGenerator();
        }
    
        @Bean
        public RedisManager redisManager(){ 
            RedisManager redisManager = new RedisManager();
            return redisManager;
        }
    
        @Bean("sessionFactory")
        public ShiroSessionFactory sessionFactory(){ 
            ShiroSessionFactory sessionFactory = new ShiroSessionFactory();
            return sessionFactory;
        }
    
        /**
         * SessionDAO的作用是为Session提供CRUD并进行持久化的一个shiro组件
         * MemorySessionDAO 直接在内存中进行会话维护
         * EnterpriseCacheSessionDAO  提供了缓存功能的会话维护，默认情况下使用MapCache实现，内部使用ConcurrentHashMap保存缓存的会话。
         * @return
         */
        @Bean
        public SessionDAO sessionDAO() { 
            RedisSessionDAO redisSessionDAO = new RedisSessionDAO();
            redisSessionDAO.setRedisManager(redisManager());
            //session在redis中的保存时间,最好大于session会话超时时间
            redisSessionDAO.setExpire(12000);
            return redisSessionDAO;
        }
    
        /**
         * 配置保存sessionId的cookie
         * 注意：这里的cookie 不是上面的记住我 cookie 记住我需要一个cookie session管理 也需要自己的cookie
         * 默认为: JSESSIONID 问题: 与SERVLET容器名冲突,重新定义为sid
         * @return
         */
        @Bean("sessionIdCookie")
        public SimpleCookie sessionIdCookie(){ 
            //这个参数是cookie的名称
            SimpleCookie simpleCookie = new SimpleCookie("sid");
            //setcookie的httponly属性如果设为true的话，会增加对xss防护的安全系数。它有以下特点：
    
            //setcookie()的第七个参数
            //设为true后，只能通过http访问，javascript无法访问
            //防止xss读取cookie
            simpleCookie.setHttpOnly(true);
            simpleCookie.setPath("/");
            //maxAge=-1表示浏览器关闭时失效此Cookie
            simpleCookie.setMaxAge(-1);
            return simpleCookie;
        }
    
        /**
         * 配置会话管理器，设定会话超时及保存
         * @return
         */
        @Bean("sessionManager")
        public SessionManager sessionManager() { 
            ShiroSessionManager sessionManager = new ShiroSessionManager();
            Collection<SessionListener> listeners = new ArrayList<SessionListener>();
            //配置监听
            listeners.add(sessionListener());
            sessionManager.setSessionListeners(listeners);
            sessionManager.setSessionIdCookie(sessionIdCookie());
            sessionManager.setSessionDAO(sessionDAO());
            sessionManager.setCacheManager(cacheManager());
            sessionManager.setSessionFactory(sessionFactory());
    
            //全局会话超时时间（单位毫秒），默认30分钟  暂时设置为10秒钟 用来测试
            sessionManager.setGlobalSessionTimeout(1800000);
            //是否开启删除无效的session对象  默认为true
            sessionManager.setDeleteInvalidSessions(true);
            //是否开启定时调度器进行检测过期session 默认为true
            sessionManager.setSessionValidationSchedulerEnabled(true);
            //设置session失效的扫描时间, 清理用户直接关闭浏览器造成的孤立会话 默认为 1个小时
            //设置该属性 就不需要设置 ExecutorServiceSessionValidationScheduler 底层也是默认自动调用ExecutorServiceSessionValidationScheduler
            //暂时设置为 5秒 用来测试
            sessionManager.setSessionValidationInterval(3600000);
            //取消url 后面的 JSESSIONID
            sessionManager.setSessionIdUrlRewritingEnabled(false);
            return sessionManager;
    
        }
    
        /**
         * 并发登录控制
         * @return
         */
        @Bean
        public KickoutSessionControlFilter kickoutSessionControlFilter(){ 
            KickoutSessionControlFilter kickoutSessionControlFilter = new KickoutSessionControlFilter();
            //用于根据会话ID，获取会话进行踢出操作的；
            kickoutSessionControlFilter.setSessionManager(sessionManager());
            //使用cacheManager获取相应的cache来缓存用户登录的会话；用于保存用户—会话之间的关系的；
            kickoutSessionControlFilter.setRedisManager(redisManager());
            //是否踢出后来登录的，默认是false；即后者登录的用户踢出前者登录的用户；
            kickoutSessionControlFilter.setKickoutAfter(false);
            //同一个用户最大的会话数，默认1；比如2的意思是同一个用户允许最多同时两个人登录；
            kickoutSessionControlFilter.setMaxSession(1);
            //被踢出后重定向到的地址；
            kickoutSessionControlFilter.setKickoutUrl("/login?kickout=1");
            return kickoutSessionControlFilter;
        }
    
        /**
         * 配置密码比较器
         * @return
         */
        @Bean("credentialsMatcher")
        public RetryLimitHashedCredentialsMatcher retryLimitHashedCredentialsMatcher(){ 
            RetryLimitHashedCredentialsMatcher retryLimitHashedCredentialsMatcher = new RetryLimitHashedCredentialsMatcher();
            retryLimitHashedCredentialsMatcher.setRedisManager(redisManager());
    
            //如果密码加密,可以打开下面配置
            //加密算法的名称
            //retryLimitHashedCredentialsMatcher.setHashAlgorithmName("MD5");
            //配置加密的次数
            //retryLimitHashedCredentialsMatcher.setHashIterations(1024);
            //是否存储为16进制
            //retryLimitHashedCredentialsMatcher.setStoredCredentialsHexEncoded(true);
    
            return retryLimitHashedCredentialsMatcher;
        }
    
    }

ShiroRealm.java

package com.springboot.test.shiro.config.shiro;
    
    import com.springboot.test.shiro.modules.user.dao.PermissionMapper;
    import com.springboot.test.shiro.modules.user.dao.RoleMapper;
    import com.springboot.test.shiro.modules.user.dao.entity.Permission;
    import com.springboot.test.shiro.modules.user.dao.entity.Role;
    import com.springboot.test.shiro.modules.user.dao.UserMapper;
    import com.springboot.test.shiro.modules.user.dao.entity.User;
    import org.apache.shiro.SecurityUtils;
    import org.apache.shiro.authc.*;
    import org.apache.shiro.authz.AuthorizationInfo;
    import org.apache.shiro.authz.SimpleAuthorizationInfo;
    import org.apache.shiro.realm.AuthorizingRealm;
    import org.apache.shiro.subject.PrincipalCollection;
    import org.springframework.beans.factory.annotation.Autowired;
    
    import java.util.Set;
    import java.util.concurrent.ConcurrentHashMap;
    
    /**
     * @author: wangsaichao
     * @date: 2018/5/10
     * @description: 在Shiro中，最终是通过Realm来获取应用程序中的用户、角色及权限信息的
     * 在Realm中会直接从我们的数据源中获取Shiro需要的验证信息。可以说，Realm是专用于安全框架的DAO.
     */
    public class ShiroRealm extends AuthorizingRealm { 
    
        @Autowired
        private UserMapper userMapper;
    
        @Autowired
        private RoleMapper roleMapper;
    
        @Autowired
        private PermissionMapper permissionMapper;
    
        /**
         * 验证用户身份
         * @param authenticationToken
         * @return
         * @throws AuthenticationException
         */
        @Override
        protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException { 
    
            //获取用户名密码 第一种方式
            //String username = (String) authenticationToken.getPrincipal();
            //String password = new String((char[]) authenticationToken.getCredentials());
    
            //获取用户名 密码 第二种方式
            UsernamePasswordToken usernamePasswordToken = (UsernamePasswordToken) authenticationToken;
            String username = usernamePasswordToken.getUsername();
            String password = new String(usernamePasswordToken.getPassword());
    
            //从数据库查询用户信息
            User user = this.userMapper.findByUserName(username);
    
            //可以在这里直接对用户名校验,或者调用 CredentialsMatcher 校验
            if (user == null) { 
                throw new UnknownAccountException("用户名或密码错误！");
            }
            //这里将 密码对比 注销掉,否则 无法锁定  要将密码对比 交给 密码比较器
            //if (!password.equals(user.getPassword())) { 
            //    throw new IncorrectCredentialsException("用户名或密码错误！");
            //}
            if ("1".equals(user.getState())) { 
                throw new LockedAccountException("账号已被锁定,请联系管理员！");
            }
    
            //调用 CredentialsMatcher 校验 还需要创建一个类 继承CredentialsMatcher  如果在上面校验了,这个就不需要了
            //配置自定义权限登录器 参考博客：
    
            SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(user, user.getPassword(), getName());
            return info;
        }
    
        /**
         * 授权用户权限
         * 授权的方法是在碰到<shiro:hasPermission name=''></shiro:hasPermission>标签的时候调用的
         * 它会去检测shiro框架中的权限(这里的permissions)是否包含有该标签的name值,如果有,里面的内容显示
         * 如果没有,里面的内容不予显示(这就完成了对于权限的认证.)
         *
         * shiro的权限授权是通过继承AuthorizingRealm抽象类，重载doGetAuthorizationInfo();
         * 当访问到页面的时候，链接配置了相应的权限或者shiro标签才会执行此方法否则不会执行
         * 所以如果只是简单的身份认证没有权限的控制的话，那么这个方法可以不进行实现，直接返回null即可。
         *
         * 在这个方法中主要是使用类：SimpleAuthorizationInfo 进行角色的添加和权限的添加。
         * authorizationInfo.addRole(role.getRole()); authorizationInfo.addStringPermission(p.getPermission());
         *
         * 当然也可以添加set集合：roles是从数据库查询的当前用户的角色，stringPermissions是从数据库查询的当前用户对应的权限
         * authorizationInfo.setRoles(roles); authorizationInfo.setStringPermissions(stringPermissions);
         *
         * 就是说如果在shiro配置文件中添加了filterChainDefinitionMap.put("/add", "perms[权限添加]");
         * 就说明访问/add这个链接必须要有“权限添加”这个权限才可以访问
         *
         * 如果在shiro配置文件中添加了filterChainDefinitionMap.put("/add", "roles[100002]，perms[权限添加]");
         * 就说明访问/add这个链接必须要有 "权限添加" 这个权限和具有 "100002" 这个角色才可以访问
         * @param principalCollection
         * @return
         */
        @Override
        protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) { 
    
            System.out.println("查询权限方法调用了！！！");
    
            //获取用户
            User user = (User) SecurityUtils.getSubject().getPrincipal();
    
            //获取用户角色
            Set<Role> roles =this.roleMapper.findRolesByUserId(user.getUid());
            //添加角色
            SimpleAuthorizationInfo authorizationInfo =  new SimpleAuthorizationInfo();
            for (Role role : roles) { 
                authorizationInfo.addRole(role.getRole());
            }
    
            //获取用户权限
            Set<Permission> permissions = this.permissionMapper.findPermissionsByRoleId(roles);
            //添加权限
            for (Permission permission:permissions) { 
                authorizationInfo.addStringPermission(permission.getPermission());
            }
    
            return authorizationInfo;
        }
    
        /**
         * 重写方法,清除当前用户的的 授权缓存
         * @param principals
         */
        @Override
        public void clearCachedAuthorizationInfo(PrincipalCollection principals) { 
            super.clearCachedAuthorizationInfo(principals);
        }
    
        /**
         * 重写方法，清除当前用户的 认证缓存
         * @param principals
         */
        @Override
        public void clearCachedAuthenticationInfo(PrincipalCollection principals) { 
            super.clearCachedAuthenticationInfo(principals);
        }
    
        @Override
        public void clearCache(PrincipalCollection principals) { 
            super.clearCache(principals);
        }
    
        /**
         * 自定义方法：清除所有 授权缓存
         */
        public void clearAllCachedAuthorizationInfo() { 
            getAuthorizationCache().clear();
        }
    
        /**
         * 自定义方法：清除所有 认证缓存
         */
        public void clearAllCachedAuthenticationInfo() { 
            getAuthenticationCache().clear();
        }
    
        /**
         * 自定义方法：清除所有的  认证缓存  和 授权缓存
         */
        public void clearAllCache() { 
            clearAllCachedAuthenticationInfo();
            clearAllCachedAuthorizationInfo();
        }
    
    }

KickoutSessionControlFilter.java(限制并发登录人数)

package com.springboot.test.shiro.config.shiro;
    
    import java.io.Serializable;
    import java.util.Deque;
    import java.util.LinkedList;
    import javax.servlet.ServletRequest;
    import javax.servlet.ServletResponse;
    import javax.servlet.http.HttpServletRequest;
    
    import com.springboot.test.shiro.modules.user.dao.entity.User;
    import org.apache.shiro.session.Session;
    import org.apache.shiro.session.mgt.DefaultSessionKey;
    import org.apache.shiro.session.mgt.SessionManager;
    import org.apache.shiro.subject.Subject;
    import org.apache.shiro.web.filter.AccessControlFilter;
    import org.apache.shiro.web.util.WebUtils;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.servlet.resource.ResourceUrlProvider;
    
    /**
     * @author: WangSaiChao
     * @date: 2018/5/23
     * @description: shiro 自定义filter 实现 并发登录控制
     */
    public class KickoutSessionControlFilter  extends AccessControlFilter{ 
    
        @Autowired
        private ResourceUrlProvider resourceUrlProvider;
    
        /** 踢出后到的地址 */
        private String kickoutUrl;
    
        /**  踢出之前登录的/之后登录的用户 默认踢出之前登录的用户 */
        private boolean kickoutAfter = false;
    
        /**  同一个帐号最大会话数 默认1 */
        private int maxSession = 1;
        private SessionManager sessionManager;
    
        private RedisManager redisManager;
    
        public static final String DEFAULT_KICKOUT_CACHE_KEY_PREFIX = "shiro:cache:kickout:";
        private String keyPrefix = DEFAULT_KICKOUT_CACHE_KEY_PREFIX;
    
        public void setKickoutUrl(String kickoutUrl) { 
            this.kickoutUrl = kickoutUrl;
        }
    
        public void setKickoutAfter(boolean kickoutAfter) { 
            this.kickoutAfter = kickoutAfter;
        }
    
        public void setMaxSession(int maxSession) { 
            this.maxSession = maxSession;
        }
    
        public void setSessionManager(SessionManager sessionManager) { 
            this.sessionManager = sessionManager;
        }
    
        public void setRedisManager(RedisManager redisManager) { 
            this.redisManager = redisManager;
        }
    
        public String getKeyPrefix() { 
            return keyPrefix;
        }
    
        public void setKeyPrefix(String keyPrefix) { 
            this.keyPrefix = keyPrefix;
        }
    
        private String getRedisKickoutKey(String username) { 
            return this.keyPrefix + username;
        }
    
        /**
         * 是否允许访问，返回true表示允许
         */
        @Override
        protected boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) throws Exception { 
            return false;
        }
        /**
         * 表示访问拒绝时是否自己处理，如果返回true表示自己不处理且继续拦截器链执行，返回false表示自己已经处理了（比如重定向到另一个页面）。
         */
        @Override
        protected boolean onAccessDenied(ServletRequest request, ServletResponse response) throws Exception { 
            Subject subject = getSubject(request, response);
            if(!subject.isAuthenticated() && !subject.isRemembered()) { 
                //如果没有登录，直接进行之后的流程
                return true;
            }
    
            //如果有登录,判断是否访问的为静态资源，如果是游客允许访问的静态资源,直接返回true
            HttpServletRequest httpServletRequest = (HttpServletRequest)request;
            String path = httpServletRequest.getServletPath();
            // 如果是静态文件，则返回true
            if (isStaticFile(path)){ 
                return true;
            }
    
    
            Session session = subject.getSession();
            //这里获取的User是实体 因为我在 自定义ShiroRealm中的doGetAuthenticationInfo方法中
            //new SimpleAuthenticationInfo(user, password, getName()); 传的是 User实体 所以这里拿到的也是实体,如果传的是userName 这里拿到的就是userName
            String username = ((User) subject.getPrincipal()).getUsername();
            Serializable sessionId = session.getId();
    
            // 初始化用户的队列放到缓存里
            Deque<Serializable> deque = (Deque<Serializable>) redisManager.get(getRedisKickoutKey(username));
            if(deque == null || deque.size()==0) { 
                deque = new LinkedList<Serializable>();
            }
    
            //如果队列里没有此sessionId，且用户没有被踢出；放入队列
            if(!deque.contains(sessionId) && session.getAttribute("kickout") == null) { 
                deque.push(sessionId);
            }
    
            //如果队列里的sessionId数超出最大会话数，开始踢人
            while(deque.size() > maxSession) { 
                Serializable kickoutSessionId = null;
                if(kickoutAfter) {  //如果踢出后者
                    kickoutSessionId=deque.getFirst();
                    kickoutSessionId = deque.removeFirst();
                } else {  //否则踢出前者
                    kickoutSessionId = deque.removeLast();
                }
                try { 
                    Session kickoutSession = sessionManager.getSession(new DefaultSessionKey(kickoutSessionId));
                    if(kickoutSession != null) { 
                        //设置会话的kickout属性表示踢出了
                        kickoutSession.setAttribute("kickout", true);
                    }
                } catch (Exception e) { //ignore exception
                    e.printStackTrace();
                }
            }
    
            redisManager.set(getRedisKickoutKey(username), deque);
    
            //如果被踢出了，直接退出，重定向到踢出后的地址
            if (session.getAttribute("kickout") != null) { 
                //会话被踢出了
                try { 
                    subject.logout();
                } catch (Exception e) { 
                }
                WebUtils.issueRedirect(request, response, kickoutUrl);
                return false;
            }
            return true;
        }
    
        private boolean isStaticFile(String path) { 
            String staticUri = resourceUrlProvider.getForLookupPath(path);
            return staticUri != null;
        }
    
    }

RetryLimitHashedCredentialsMatcher.java(登录错误次数限制)

package com.springboot.test.shiro.config.shiro;
    
    import java.util.concurrent.atomic.AtomicInteger;
    
    import com.springboot.test.shiro.modules.user.dao.UserMapper;
    import com.springboot.test.shiro.modules.user.dao.entity.User;
    import org.apache.log4j.Logger;
    import org.apache.shiro.authc.AuthenticationInfo;
    import org.apache.shiro.authc.AuthenticationToken;
    import org.apache.shiro.authc.LockedAccountException;
    import org.apache.shiro.authc.credential.SimpleCredentialsMatcher;
    import org.apache.shiro.cache.Cache;
    import org.apache.shiro.cache.CacheManager;
    import org.springframework.beans.factory.annotation.Autowired;
    
    
    /**
     * @author: WangSaiChao
     * @date: 2018/5/25
     * @description: 登陆次数限制
     */
    public class RetryLimitHashedCredentialsMatcher extends SimpleCredentialsMatcher { 
    
        private static final Logger logger = Logger.getLogger(RetryLimitHashedCredentialsMatcher.class);
    
        public static final String DEFAULT_RETRYLIMIT_CACHE_KEY_PREFIX = "shiro:cache:retrylimit:";
        private String keyPrefix = DEFAULT_RETRYLIMIT_CACHE_KEY_PREFIX;
        @Autowired
        private UserMapper userMapper;
        private RedisManager redisManager;
    
        public void setRedisManager(RedisManager redisManager) { 
            this.redisManager = redisManager;
        }
    
        private String getRedisKickoutKey(String username) { 
            return this.keyPrefix + username;
        }
    
        @Override
        public boolean doCredentialsMatch(AuthenticationToken token, AuthenticationInfo info) { 
    
            //获取用户名
            String username = (String)token.getPrincipal();
            //获取用户登录次数
            AtomicInteger retryCount = (AtomicInteger)redisManager.get(getRedisKickoutKey(username));
            if (retryCount == null) { 
                //如果用户没有登陆过,登陆次数加1 并放入缓存
                retryCount = new AtomicInteger(0);
            }
            if (retryCount.incrementAndGet() > 5) { 
                //如果用户登陆失败次数大于5次 抛出锁定用户异常  并修改数据库字段
                User user = userMapper.findByUserName(username);
                if (user != null && "0".equals(user.getState())){ 
                    //数据库字段 默认为 0  就是正常状态 所以 要改为1
                    //修改数据库的状态字段为锁定
                    user.setState("1");
                    userMapper.update(user);
                }
                logger.info("锁定用户" + user.getUsername());
                //抛出用户锁定异常
                throw new LockedAccountException();
            }
            //判断用户账号和密码是否正确
            boolean matches = super.doCredentialsMatch(token, info);
            if (matches) { 
                //如果正确,从缓存中将用户登录计数 清除
                redisManager.del(getRedisKickoutKey(username));
            }{ 
                redisManager.set(getRedisKickoutKey(username), retryCount);
            }
            return matches;
        }
    
        /**
         * 根据用户名 解锁用户
         * @param username
         * @return
         */
        public void unlockAccount(String username){ 
            User user = userMapper.findByUserName(username);
            if (user != null){ 
                //修改数据库的状态字段为锁定
                user.setState("0");
                userMapper.update(user);
                redisManager.del(getRedisKickoutKey(username));
            }
        }
    
    }

ShiroSessionListener.java(session监听)

package com.springboot.test.shiro.config.shiro;
    
    import com.springboot.test.shiro.Application;
    import com.springboot.test.shiro.modules.user.dao.entity.User;
    import org.apache.shiro.SecurityUtils;
    import org.apache.shiro.session.Session;
    import org.apache.shiro.session.SessionListener;
    import org.springframework.beans.factory.annotation.Autowired;
    
    import javax.servlet.ServletContextEvent;
    import javax.servlet.ServletContextListener;
    import javax.servlet.http.HttpSessionAttributeListener;
    import javax.servlet.http.HttpSessionBindingEvent;
    import java.util.concurrent.ConcurrentHashMap;
    import java.util.concurrent.atomic.AtomicInteger;
    
    /**
     * @author: wangsaichao
     * @date: 2018/5/15
     * @description: 配置session监听器,
     */
    public class ShiroSessionListener implements SessionListener{ 
    
        /**
         * 统计在线人数
         * juc包下线程安全自增
         */
        private final AtomicInteger sessionCount = new AtomicInteger(0);
    
        /**
         * 会话创建时触发
         * @param session
         */
        @Override
        public void onStart(Session session) { 
            //会话创建，在线人数加一
            sessionCount.incrementAndGet();
        }
    
        /**
         * 退出会话时触发
         * @param session
         */
        @Override
        public void onStop(Session session) { 
            //会话退出,在线人数减一
            sessionCount.decrementAndGet();
        }
    
        /**
         * 会话过期时触发
         * @param session
         */
        @Override
        public void onExpiration(Session session) { 
            //会话过期,在线人数减一
            sessionCount.decrementAndGet();
        }
    
        /**
         * 获取在线人数使用
         * @return
         */
        public AtomicInteger getSessionCount() { 
            return sessionCount;
        }
    }

上面的类中有一些依赖类,并没有贴出来,该些类是为了解决Shiro整合Redis 频繁获取或更新 Session 将在下一篇博客中讲,依赖的一些类,也在下篇博客中贴出来。点击进入下一篇博客：

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