Redis使用工具类

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 exceptionlogger.error(e.getMessage(), e);}return null;}}

初始化代码如下：

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