<!--redis快取-->
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-redis</artifactId>
            <version>1.8.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId
 
>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
            <version>2.3</version>
        </dependency>
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId
 
>
            <version>2.9.0</version>
        </dependency>

    <!--配置redis連線的配置檔案，placeholder的例項只能存在一個-->
    <!--<context:property-placeholder location="classpath:redis.properties"/>-->
    <!--啟用快取註解-->
    <cache:annotation-driven cache-manager="cacheManager"
 
/>
    <!--快取管理器-->
    <bean id="cacheManager" class="org.springframework.cache.support.SimpleCacheManager">
        <property name="caches">
            <set>
                <!--自定義的redis快取操作實現-->
                <bean class="com.common.cache.redis.RedisCache">
                    <property name="name" value="myCache"/>
                    <property name="redisTemplate" ref="redisTemplate"/>
                </bean>
            </set>
        </property>
    </bean>
    <!--redis連線池配置-->
    <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxIdle" value="${redis.maxIdle}"/>
        <property name="maxTotal" value="${redis.maxTotal}"/>
        <property name="testOnBorrow" value="${redis.testOnBorrow}"/>
    </bean>
    <!--redis連線工廠配置-->
    <bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
        <property name="hostName" value="${redis.host}"/>
        <property name="port" value="${redis.port}"/>
        <property name="password" value="${redis.pass}"/>
        <property name="poolConfig" ref="poolConfig"/>
        <property name="usePool" value="true"/>
    </bean>
    <!--redis操作模板-->
    <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
        <property name="connectionFactory" ref="connectionFactory"/>
    </bean>

/**
 * Cache adapter for Redis.
 */
public class RedisCache implements Cache {
    private RedisTemplate<String, Object> redisTemplate;
    private String name;

    public void setRedisTemplate(RedisTemplate<String, Object> redisTemplate) {
        this.redisTemplate = redisTemplate;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String getName() {
        return this.name;
    }

    @Override
    public Object getNativeCache() {
        return this.redisTemplate;
    }

    /**
     * 從快取中獲取key
     */
    @Override
    public ValueWrapper get(Object key) {
        final String keyf = key.toString();
        Object object;
        object = redisTemplate.execute((RedisCallback<Object>) connection -> {
            byte[] key1 = keyf.getBytes();
            byte[] value = connection.get(key1);
            if (value == null) {
                return null;
            }
            return SerializationUtils.deserialize(value);
        });
        return (object != null ? new SimpleValueWrapper(object) : null);
    }

    /**
     * 將一個新的key儲存到快取中
     * 先拿到需要快取key名稱和物件，然後將其轉成ByteArray
     */
    @Override
    public void put(Object key, Object value) {
        final String keyf = key.toString();
        final Object valuef = value;
        final long liveTime = 86400;
        redisTemplate.execute((RedisCallback<Long>) connection -> {
            byte[] keyb = keyf.getBytes();
            byte[] valueb = SerializationUtils.serialize(valuef);
            connection.set(keyb, valueb);
            if (liveTime > 0) {
                connection.expire(keyb, liveTime);
            }
            return 1L;
        });
    }


    /**
     * 刪除key
     */
    @Override
    public void evict(Object key) {
        final String keyf = key.toString();
        redisTemplate.execute((RedisCallback<Long>) connection -> connection.del(keyf.getBytes()));
    }

    /**
     * 清空key
     */
    @Override
    public void clear() {
        redisTemplate.execute((RedisCallback<String>) connection -> {
            connection.flushDb();
            return "ok";
        });
    }

    @Override
    public <T> T get(Object key, Class<T> type) {
        return null;
    }

    @Override
    public <T> T get(Object o, Callable<T> callable) {
        return null;
    }

    @Override
    public ValueWrapper putIfAbsent(Object key, Object value) {
        return null;
    }
}

    //在Service層寫註解
    @Cacheable(value = "myCache", key = "getMethodName()")