RedisSessionDAO.java
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package com.bootdo.common.redis.shiro;
import org.apache.shiro.session.Session;
import org.apache.shiro.session.UnknownSessionException;
import org.apache.shiro.session.mgt.eis.AbstractSessionDAO;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.Serializable;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
/**
* @author bootdo 1992lcg@163.com
* @version V1.0
*/
public class RedisSessionDAO extends AbstractSessionDAO {
private static Logger logger = LoggerFactory.getLogger(RedisSessionDAO.class);
/**
* shiro-redis的session对象前缀
*/
private RedisManager redisManager;
/**
* The Redis key prefix for the sessions
*/
private String keyPrefix = "shiro_redis_session:";
@Override
public void update(Session session) throws UnknownSessionException {
this.saveSession(session);
}
/**
* 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");
return;
}
byte[] key = getByteKey(session.getId());
byte[] value = SerializeUtils.serialize(session);
session.setTimeout(redisManager.getExpire()*1000);
this.redisManager.set(key, value, redisManager.getExpire());
}
@Override
public void delete(Session session) {
if(session == null || session.getId() == null){
logger.error("session or session id is null");
return;
}
redisManager.del(this.getByteKey(session.getId()));
}
@Override
public Collection<Session> getActiveSessions() {
Set<Session> sessions = new HashSet<Session>();
Set<byte[]> keys = redisManager.keys(this.keyPrefix + "*");
if(keys != null && keys.size()>0){
for(byte[] key:keys){
Session s = (Session)SerializeUtils.deserialize(redisManager.get(key));
sessions.add(s);
}
}
return sessions;
}
@Override
protected Serializable doCreate(Session session) {
Serializable sessionId = this.generateSessionId(session);
this.assignSessionId(session, sessionId);
this.saveSession(session);
return sessionId;
}
@Override
protected Session doReadSession(Serializable sessionId) {
if(sessionId == null){
logger.error("session id is null");
return null;
}
Session s = (Session)SerializeUtils.deserialize(redisManager.get(this.getByteKey(sessionId)));
return s;
}
/**
* 获得byte[]型的key
* @param key
* @return
*/
private byte[] getByteKey(Serializable sessionId){
String preKey = this.keyPrefix + sessionId;
return preKey.getBytes();
}
public RedisManager getRedisManager() {
return redisManager;
}
public void setRedisManager(RedisManager redisManager) {
this.redisManager = redisManager;
/**
* 初始化redisManager
*/
this.redisManager.init();
}
/**
* Returns the Redis session keys
* prefix.
* @return The prefix
*/
public String getKeyPrefix() {
return keyPrefix;
}
/**
* Sets the Redis sessions key
* prefix.
* @param keyPrefix The prefix
*/
public void setKeyPrefix(String keyPrefix) {
this.keyPrefix = keyPrefix;
}
}