java 簡單使用redis

1.配置檔案

  <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxTotal" value="50" />
        <property name="maxIdle" value="8" />
        <property name="maxWaitMillis" value="1000" />
        <property name="testOnBorrow" value="true"/>
        <property name="testOnReturn" value="true"/>
    </bean>

    <bean id="jedisPool" class="redis.clients.jedis.JedisPool">
        <constructor-arg index="0" ref="jedisPoolConfig" />
        <constructor-arg index="1" value="192.168.1.76" type="java.lang.String"/>
        <constructor-arg index="2" value="6379"  type="int"/>
    </bean>

2.複雜物件，通過序列化成進進位制儲存到redis中

@Repository("RedisCacheImpl")
public class RedisCacheImpl implements IRedisCache {

    private static final Logger logger = LoggerFactory.getLogger(RedisCacheImpl.class);

    @Autowired(required = false)
    protected JedisPool pool;

    @Override
    public void put(String key, Object value) {
        Jedis jedis = null;
        try {
            jedis = pool.getResource();
            jedis.set(key.getBytes(), SerializeUtil.serialize(value));
        } catch (Exception e) {
            logger.error("redis error:", e);
        } finally {
            if (jedis != null) {
                jedis.close();
            }
        }
    }

    @SuppressWarnings({"unchecked"})
    @Override
    public <T> T get(String key) {
        Jedis jedis = null;
        try {
            jedis = pool.getResource();
            byte[] value = jedis.get(key.getBytes());
            if (value == null) {
                return null;
            }
            return (T) SerializeUtil.unSerialize(value);
        } catch (Exception e) {
            logger.error("redis error:", e);
            return null;
        } finally {
            if (jedis != null) {
                jedis.close();
            }
        }
    }

    @SuppressWarnings({"unchecked"})
    @Override
    public boolean del(String key) {
        Jedis jedis = null;
        try {
            jedis = pool.getResource();
            return jedis.del(key.getBytes()) > 0;
        } catch (Exception e) {
            logger.error("redis error:", e);
            return false;
        } finally {
            if (jedis != null) {
                jedis.close();
            }
        }
    }
}

3.序列化類

public class SerializeUtil {

    private static final Logger logger = LoggerFactory.getLogger(SerializeUtil.class);


    public static byte[] serialize(Object object) {
        ObjectOutputStream oos = null;
        ByteArrayOutputStream baos = null;
        try {
            // 序列化
            baos = new ByteArrayOutputStream();
            oos = new ObjectOutputStream(baos);
            oos.writeObject(object);
            byte[] bytes = baos.toByteArray();
            return bytes;
        } catch (Exception e) {
            logger.error("serializer error:", e);
        }
        return null;
    }

    public static Object unSerialize(byte[] bytes) {
        ByteArrayInputStream bais = null;
        try {
            // 反序列化
            bais = new ByteArrayInputStream(bytes);
            ObjectInputStream ois = new ObjectInputStream(bais);
            return ois.readObject();
        } catch (Exception e) {
            logger.error("serializer error:", e);
        }
        return null;
    }
}