Configuration Redis basée sur Spring (mode autonome et cluster)

spring集成redis单机版：
    1.配置RedisTemplate
        <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
            <property name="connectionFactory" ref="connectionFactory"/>
            <property name="defaultSerializer" ref="stringRedisSerializer"/>
            <property name="keySerializer" ref="stringRedisSerializer"/>
            <property name="valueSerializer" ref="valueSerializer"/>
        </bean>
    2.配置connectionFactory
        <bean id="connectionFactory"  class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
            <!-- 配置ip -->
            <property name="hostName" value="${redis.host}"/>
            <!-- 配置port -->
            <property name="port" value="${redis.port}"/>
            <!-- 是否使用连接池-->
            <property name="usePool" value="${redis.usePool}"/>
            <!-- 配置redis连接池-->
            <property name="poolConfig" ref="poolConfig"/>
        </bean>
   3.配置连接池
        <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
            <!--最大空闲实例数-->
            <property name="maxIdle" value="${redis.maxIdle}" />
            <!--最大活跃实例数-->
            <property name="maxTotal" value="${redis.maxTotal}" />
            <!--创建实例时最长等待时间-->
            <property name="maxWaitMillis" value="${redis.maxWaitMillis}" />
            <!--创建实例时是否验证-->
            <property name="testOnBorrow" value="${redis.testOnBorrow}" />
        </bean>

spring集成redis集群
    1.配置RedisTemplate步骤与单机版一致
    2.配置connectionFactory
        <bean id="connectionFactory"  class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
            <!-- 配置redis连接池-->    
            <constructor-arg ref="poolConfig"></constructor-arg>
            <!-- 配置redis集群-->  
         <constructor-arg ref="clusterConfig"></constructor-arg>
            <!-- 是否使用连接池-->
            <property name="usePool" value="${redis.usePool}"/>
        </bean>
    3.配置连接池步骤与单机版一致
    4.配置redis集群
        <bean id="clusterConfig" class="org.springframework.data.redis.connection.RedisClusterConfiguration">
            <property name="maxRedirects" value="3"></property>
            <property name="clusterNodes">
                <set>
                    <bean class="org.springframework.data.redis.connection.RedisClusterNode">
                        <constructor-arg value="${redis.host1}"></constructor-arg>
                        <constructor-arg value="${redis.port1}"></constructor-arg>
                    </bean>
                    <bean class="org.springframework.data.redis.connection.RedisClusterNode">
                        <constructor-arg value="${redis.host2}"></constructor-arg>
                        <constructor-arg value="${redis.port2}"></constructor-arg>
                    </bean>
                    ......
                </set>
            </property>
        </bean>
    或者
        <bean name="propertySource" class="org.springframework.core.io.support.ResourcePropertySource">
            <constructor-arg name="location" value="classpath:properties/spring-redis-cluster.properties" />
        </bean>
        <bean id="clusterConfig" class="org.springframework.data.redis.connection.RedisClusterConfiguration">
            <constructor-arg name="propertySource" ref="propertySource"/>
        </bean>

1.stringRedisSerializer：由于redis的key是String类型所以一般使用StringRedisSerializer
2.valueSerializer：对于redis的value序列化，spring-data-redis提供了许多序列化类，这里建议使用Jackson2JsonRedisSerializer，默认为JdkSerializationRedisSerializer
3.JdkSerializationRedisSerializer： 使用JDK提供的序列化功能。 优点是反序列化时不需要提供类型信息(class)，但缺点是序列化后的结果非常庞大，是JSON格式的5倍左右，这样就会消耗redis服务器的大量内存。
4.Jackson2JsonRedisSerializer：使用Jackson库将对象序列化为JSON字符串。优点是速度快，序列化后的字符串短小精悍。但缺点也非常致命，那就是此类的构造函数中有一个类型参数，必须提供要序列化对象的类型信息(.class对象)。

@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {

    //spring3支持注解方式获取value 在application里配置配置文件路径即可获取
    @Value("${spring.redis.cluster.nodes}")
    private String clusterNodes;

    @Value("${spring.redis.cluster.timeout}")
    private Long timeout;

    @Value("${spring.redis.cluster.max-redirects}")
    private int redirects;

    @Value("${redis.maxIdle}")
    private int maxIdle;

    @Value("${redis.maxTotal}")
    private int maxTotal;

    @Value("${redis.maxWaitMillis}")
    private long maxWaitMillis;

    @Value("${redis.testOnBorrow}")
    private boolean testOnBorrow;

    /**
     * 选择redis作为默认缓存工具
     * @param redisTemplate
     * @return
     */
    @Bean
    public CacheManager cacheManager(RedisTemplate redisTemplate) {
        RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
        //cacheManager.setDefaultExpiration(60);
        //Map<String,Long> expiresMap=new HashMap<>();
        //expiresMap.put("redisCache",5L);
        //cacheManager.setExpires(expiresMap);
        return cacheManager;
    }

    @Bean
    public RedisClusterConfiguration redisClusterConfiguration(){
        Map<String, Object> source = new HashMap<>();
        source.put("spring.redis.cluster.nodes", clusterNodes);
        source.put("spring.redis.cluster.timeout", timeout);
        source.put("spring.redis.cluster.max-redirects", redirects);
        return new RedisClusterConfiguration(new MapPropertySource("RedisClusterConfiguration", source));
    }

    @Bean
    public JedisConnectionFactory redisConnectionFactory(RedisClusterConfiguration configuration){
        JedisPoolConfig poolConfig = new JedisPoolConfig();
        poolConfig.setMaxIdle(maxIdle);
        poolConfig.setMaxTotal(maxTotal); 
        poolConfig.setMaxWaitMillis(maxWaitMillis);
        poolConfig.setTestOnBorrow(testOnBorrow);
        return new JedisConnectionFactory(configuration,poolConfig);
    }

    /**
     * retemplate相关配置
     * @param factory
     * @return
     */
    @Bean
    public RedisTemplate<String, Object> redisTemplate(JedisConnectionFactory factory) {

        RedisTemplate<String, Object> template = new RedisTemplate<>();
        // 配置连接工厂
        template.setConnectionFactory(factory);

        //使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值（默认使用JDK的序列化方式）
        Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class);

        ObjectMapper om = new ObjectMapper();
        // 指定要序列化的域，field,get和set,以及修饰符范围，ANY是都有包括private和public
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        // 指定序列化输入的类型，类必须是非final修饰的，final修饰的类，比如String,Integer等会跑出异常
        //om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jacksonSeial.setObjectMapper(om);

        // 值采用json序列化
        template.setValueSerializer(jacksonSeial);
        //使用StringRedisSerializer来序列化和反序列化redis的key值
        template.setKeySerializer(new StringRedisSerializer());

        // 设置hash key 和value序列化模式
        template.setHashKeySerializer(new StringRedisSerializer());
    
        template.setHashValueSerializer(jacksonSeial);
        template.afterPropertiesSet();

        return template;
    }
}

<context:component-scan base-package="com.*"/>

<value>classpath:properties/spring-redis-cluster.properties</value>