Java 操作redis缓存

*

首先是Redis配置文件 applicationContext-redis.xml:

      <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns="http://www.springframework.org/schema/beans"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd 
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context.xsd"
       default-lazy-init="false">

    <context:property-placeholder location="classpath:redis.properties"
                                  ignore-unresolvable="true"/>
    <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxIdle" value="1000"/>  <!-- ${redis.maxIdle} -->
        <property name="minIdle" value="100"/>  <!-- ${redis.minIdle} -->
        <property name="maxTotal" value="100"/> <!-- ${redis.minIdle} -->
        <property name="testOnBorrow" value="true"/>  <!-- ${redis.testOnBorrow} -->
        <property name="testOnReturn" value="true"/>  <!-- ${redis.testOnReturn} -->
    </bean>

    <bean id="jedisConnectionFactory"
          class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"
          p:host-name="255.255.255.255"  <!-- ${redis.host} -->
          p:port="6379"  <!-- ${redis.port} -->
          p:pool-config-ref="jedisPoolConfig"
          p:use-pool="true"
          p:database="0"/>  <!-- ${redis.database} -->

    <bean id="RedisTemplate" class="org.springframework.data.redis.core.RedisTemplate"
          p:connection-factory-ref="jedisConnectionFactory"
          p:keySerializer-ref="stringRedisSerializer"
          p:valueSerializer-ref="JdkSerializationRedisSerializer"/>

    <bean id="stringRedisSerializer" class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
    <bean id="JdkSerializationRedisSerializer"
          class="com.alibaba.fastjson.support.spring.GenericFastJsonRedisSerializer"/>
</beans>

*

java 实现层引入Redis

// String类型 
@Autowired
private RedisTemplate<String, String> redisTemplate;

*

操作Redis进行获取值，添加值

private static final String REDIS_STRING_KEY = "activity:template";
// （1）获取值
String jsonStr = redisTemplate.boundValueOps(REDIS_STRING_KEY).get();

/*
如果引入  
@Autowired
private RedisTemplate<String, Object> redisTemplate;

获取redisTemplate.boundValueOps(REDIS_STRING_KEY).get() 返回的是一个对象，返回结果中包含一个@type键值*/

// (2) 添加值
String templateDetailJson = JSON.toJSONString(templateDetail);   //对象转json串
//添加1
redisTemplate.opsForValue().set(ACTIVITY_TEMPLATE_KEY, templateDetailJson);
//添加2
redisTemplate.boundValueOps(ACTIVITY_TEMPLATE_KEY).set(templateDetailJson);

// 设置键的过期时间
// 制定过期时间 date
redisTemplate.expireAt(ACTIVITY_TEMPLATE_KEY, templateDetail.getEndTime());
// 设置1天后过期
redisTemplate.expire(ACTIVITY_TEMPLATE_KEY, 1, TimeUnit.DAYS);

后续更新。。。。。。。

原文链接: https://onlyou.blog.csdn.net//article/details/100763227