spring 整合redis 简单使用

1.简单介绍redis 是基于C语言开发。redis是一个key-value存储系统。和Memcached类似，它支持存储的value类型相对更多，包括string(字符串)、list(链表)、set(集合)、zset(sorted set --有序集合)和hash（哈希类型）。redis 是一个 缓存数据库(片面的理解) 既可以做缓存，也可以将数据持久化到磁盘中！ 2.pom.xml 引入相关jar （曾经因jar 版本问题出现报错，请注意）

<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>2.2</version>
</dependency>

<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.7.5.RELEASE</version>
</dependency>

<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
</dependency>

3.spring-redis.xml 配置文件，配置关键bean redisTemplate

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd"> 
<!--    <context:property-placeholder location="classpath:redis-config.properties"/>
-->

<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxIdle" value="${redis.maxIdle}" />
<property name="maxTotal" value="${redis.maxTotal}" />
<property name="blockWhenExhausted" value="true" />
<property name="maxWaitMillis" value="${redis.maxWaitMillis}" />
<property name="testOnBorrow" value="${redis.testOnBorrow}" />
</bean>

<bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
<property name="hostName" value="${redis.hostname}" />
<property name="port" value="${redis.port}"/>
<property name="poolConfig" ref="jedisPoolConfig" />
<property name="usePool" value="true"/>
</bean>

<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
<property name="connectionFactory"  ref="jedisConnectionFactory" />
<property name="keySerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />
</property>
<property name="valueSerializer">
<bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" />
</property>
<property name="hashKeySerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
</property>
<property name="hashValueSerializer">
<bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer"/>
</property>
</bean>

</beans>

上文中使用到的配置文件 redis-config.properteis

redis.maxIdle=1
redis.maxTotal=5
redis.maxWaitMillis=30000
redis.testOnBorrow=true
redis.hostname=127.0.0.1
redis.port=6379

4.redis 有4个关键的接口如下

private ValueOperations<K, V> valueOps;
private ListOperations<K, V> listOps;
private SetOperations<K, V> setOps;
private ZSetOperations<K, V> zSetOps;

分别对应redis的数据类型：string（字符串），hash（哈希），list（列表），set（集合）及zset(sorted set：有序集合)

具体使用如下，上代码：

//添加字符串
ValueOperations<String, String> value = this.redisTemplate.opsForValue();
value.set("hello", "讨厌");
System.out.println(value.get("hello"));

//添加 一个 hash集合
HashOperations<String, Object, Object>  hash =redisTemplate.opsForHash();
hash.put("沃尔玛","水果", "苹果");
hash.put("沃尔玛","饮料", "红牛");
System.out.println(hash.entries("沃尔玛"));

//添加一个list 集合
ListOperations<String, Object> list = redisTemplate.opsForList();
list.rightPush("课程", "chinese");
list.rightPush("课程", "englise");
System.out.println(list.range("lpList", 0, 1));

//添加 一个 set 集合
SetOperations<String, Object> set = redisTemplate.opsForSet();
set.add("lpSet", "lp");
set.add("lpSet", "26");
set.add("lpSet", "178cm");
//输出 set 集合
System.out.println(set.members("lpSet"));

//添加有序的 set 集合
ZSetOperations<String, Object> zset = redisTemplate.opsForZSet();
zset.add("lpZset", "lp", 0);
zset.add("lpZset", "26", 2);
zset.add("lpZset", "178cm", 1);
//输出有序 set 集合
System.out.println(zset.rangeByScore("lpZset", 0, 2));