Spring + Jedis整合Redis

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這幾天沒事，就把之前學習的redis代碼整理一遍，廢話不多說，上步驟。

1、pom.xml引入資源；

        <dependency>            <groupId>org.springframework.data</groupId>            <artifactId>spring-data-redis</artifactId>            <version>1.7.0.RELEASE</version>        </dependency>        <dependency>            <groupId>redis.clients</groupId>            <artifactId>jedis</artifactId>            <version>2.8.0</version>        </dependency>

2、配置redis的設定檔，這裡只配置單點資料庫，後面會介紹redis叢集的配置，這裡就不多說了；

 spring-redis.xml配置：

    <!-- 讀取設定檔資訊 -->    <context:property-placeholder ignore-unresolvable="true" location="classpath:*.properties"/>    <!-- Redis 配置 -->    <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">        <property name="maxTotal" value="${redis.maxActive}" />        <property name="maxIdle" value="${redis.maxIdle}" />        <property name="maxWaitMillis" value="${redis.maxWaitMillis}" />        <property name="testOnBorrow" value="true" />    </bean>    <!-- redis單節點資料庫連接配置 -->    <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">        <property name="hostName" value="${redis.host}" />        <property name="port" value="${redis.port}" />        <property name="password" value="${redis.password}" />        <property name="poolConfig" ref="jedisPoolConfig" />    </bean>    <!-- redisTemplate配置，redisTemplate是對Jedis的對redis操作的擴充，有更多的操作，封裝使操作更便捷 -->    <bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">        <property name="connectionFactory" ref="jedisConnectionFactory" />    </bean>

 redis.properties檔案配置：

#redis的伺服器位址redis.host=這裡寫你的ip#redis的服務連接埠redis.port=6379#密碼redis.password=這裡寫你的密碼#連結資料庫redis.default.db=0#用戶端逾時時間單位是毫秒redis.timeout=100000#最大串連數redis.maxActive=300#最大空閑數redis.maxIdle=100#最大建立串連等待時間redis.maxWaitMillis=1000

3、接著，具體實現代碼；

 序列化和還原序列化工具類：

public class SerializerUtil {    /**     * 序列化     * @param object     * @return     */    public static byte[] serializeObj(Object object) {        ObjectOutputStream oos = null;        ByteArrayOutputStream baos = null;        try {            baos = new ByteArrayOutputStream();            oos = new ObjectOutputStream(baos);            oos.writeObject(object);            byte[] bytes = baos.toByteArray();            return bytes;        } catch (Exception e) {            throw new RuntimeException("序列化失敗!", e);        }    }    /**     * 還原序列化     * @param bytes     * @return     */    public static Object deserializeObj(byte[] bytes) {        if (bytes == null){            return null;        }        ByteArrayInputStream bais = null;        try {            bais = new ByteArrayInputStream(bytes);            ObjectInputStream ois = new ObjectInputStream(bais);            return ois.readObject();        } catch (Exception e) {            throw new RuntimeException("還原序列化失敗!", e);        }    }}

操作實作類別，這裡只提供了3個實作類別，其他的可以按照自己需求自己實現：

@Componentpublic class RedisCache {    @Resource    private RedisTemplate<String, String> redisTemplate;    /**     * 添加快取資料     * @param key     * @param obj     * @param <T>     * @return     * @throws Exception     */    public <T> boolean putCache(String key, T obj) throws Exception {        final byte[] bkey = key.getBytes();        final byte[] bvalue = SerializerUtil.serializeObj(obj);        boolean result = redisTemplate.execute(new RedisCallback<Boolean>() {            @Override            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {                return connection.setNX(bkey, bvalue);            }        });        return result;    }    /**     * 添加快取資料，設定緩衝失效時間     * @param key     * @param obj     * @param expireTime     * @param <T>     * @throws Exception     */    public <T> void putCacheWithExpireTime(String key, T obj, final long expireTime) throws Exception {        final byte[] bkey = key.getBytes();        final byte[] bvalue = SerializerUtil.serializeObj(obj);        redisTemplate.execute(new RedisCallback<Boolean>() {            @Override            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {                connection.setEx(bkey, expireTime, bvalue);                return true;            }        });    }    /**     * 根據key取快取資料     * @param key     * @param <T>     * @return     * @throws Exception     */    public <T> T getCache(final String key) throws Exception {        byte[] result = redisTemplate.execute(new RedisCallback<byte[]>() {            @Override            public byte[] doInRedis(RedisConnection connection) throws DataAccessException {                return connection.get(key.getBytes());            }        });        if (result == null) {            return null;        }        return (T) SerializerUtil.deserializeObj(result);    }}

4、測試代碼；

    @Test    public void test7() throws Exception{        List<String> list = new ArrayList<String>();        list.add("測試list");        list.add("測試list2");                Map<String,Object> map = new HashMap<String, Object>();        map.put("test*","測試資料");        map.put("測試資料","啥的");        map.put("listTest",list);        redisCache.putCache("testMap",map);        Map<String,Object> mapResult = redisCache.getCache("testMap");        System.out.print(mapResult.toString());    }

結果：

5、OK，一切正常。ps：有興趣的同學可以去看看redis源碼，挺好！

Spring + Jedis整合Redis