Redis使用工具类

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项目中引入了Redis。虽然Jfinal整合了Redis,但是使用自身的序列化机制效率并不是很高，目前比较好的序列化机制是google的Protostuff，所以这里采用Protostuff编写一个Redis工具类。代码如下：

public class RedisDao {private final Logger logger = LoggerFactory.getLogger(this.getClass());private final JedisPool jedisPoll;public RedisDao(String ip, int port){jedisPoll = new JedisPool(ip, port);}    //以Users为例private RuntimeSchema<Users> schema = RuntimeSchema.createFrom(Users.class);//获取对象缓存public Object get(String usersId) {// redis操作try {Jedis jedis = jedisPoll.getResource();try {//java自带序列化机制效率不高，采用google protostuff实现自身序列化机制String  key = "userId:"+ usersId;//实现序列化机制,对象必须为pojo类型byte[] bytes = jedis.get(key.getBytes());if(bytes != null){Users users = schema.newMessage();ProtostuffIOUtil.mergeFrom(bytes, users, schema);return users;}} finally {jedis.close();}} catch (Exception e) {// TODO: handle exceptionlogger.error(e.getMessage(), e);}return null;}//将对象放入缓存public Object set(Users users){  try {Jedis jedis = jedisPoll.getResource();try {String key = "userId:"+ users.getAccid();byte[] bytes = ProtostuffIOUtil.toByteArray(users, schema, LinkedBuffer.allocate(LinkedBuffer.DEFAULT_BUFFER_SIZE));//超时缓存int timeout = 60*60;//返回结果String result  = jedis.setex(key.getBytes(), timeout, bytes);    return result;    } finally {jedis.close();}    }catch (Exception e) {// TODO: handle exception    logger.error(e.getMessage(), e);   }   return null;}}

初始化代码如下：

RedisDao redisDao = new RedisDao("localhost", 6379);

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