jedis是redis的java客户端，spring将redis连接池作为一个bean配置。
redis连接池分为两种，一种是“redis.clients.jedis.ShardedJedisPool”，这是基于hash算法的一种分布式集群redis客户端连接池。
另一种是“redis.clients.jedis.JedisPool”，这是单机环境适用的redis连接池。
maven导入相关包：
<!-- redis依赖包 --> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.9.0</version> </dependency>
ShardedJedisPool是redis集群客户端的对象池，可以通过他来操作ShardedJedis，下面是ShardedJedisPool的xml配置，spring-jedis.xml：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
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">
<!-- 引入jedis的properties配置文件 -->
<!--如果你有多个数据源需要通过<context:property-placeholder管理，且不愿意放在一个配置文件里，那么一定要加上ignore-unresolvable=“true"-->
<context:property-placeholder location="classpath:properties/redis.properties" ignore-unresolvable="true" />
<!--shardedJedisPool的相关配置-->
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<!--新版是maxTotal，旧版是maxActive-->
<property name="maxTotal">
<value>${redis.pool.maxActive}</value>
</property>
<property name="maxIdle">
<value>${redis.pool.maxIdle}</value>
</property>
<property name="testOnBorrow" value="true"/>
<property name="testOnReturn" value="true"/>
</bean>
<bean id="shardedJedisPool" class="redis.clients.jedis.ShardedJedisPool" scope="singleton">
<constructor-arg index="0" ref="jedisPoolConfig" />
<constructor-arg index="1">
<list>
<bean class="redis.clients.jedis.JedisShardInfo">
<constructor-arg name="host" value="${redis.uri}" />
</bean>
</list>
</constructor-arg>
</bean>
</beans>
下面是单机环境下redis连接池的配置：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 引入jedis的properties配置文件 -->
<!--如果你有多个数据源需要通过<context:property-placeholder管理，且不愿意放在一个配置文件里，那么一定要加上ignore-unresolvable=“true"-->
<context:property-placeholder location="classpath:properties/redis.properties" ignore-unresolvable="true" />
<!--Jedis连接池的相关配置-->
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<!--新版是maxTotal，旧版是maxActive-->
<property name="maxTotal">
<value>${redis.pool.maxActive}</value>
</property>
<property name="maxIdle">
<value>${redis.pool.maxIdle}</value>
</property>
<property name="testOnBorrow" value="true"/>
<property name="testOnReturn" value="true"/>
</bean>
<bean id="jedisPool" class="redis.clients.jedis.JedisPool">
<constructor-arg name="poolConfig" ref="jedisPoolConfig" />
<constructor-arg name="host" value="${redis.host}" />
<constructor-arg name="port" value="${redis.port}" type="int" />
<constructor-arg name="timeout" value="${redis.timeout}" type="int" />
<constructor-arg name="password" value="${redis.password}" />
<constructor-arg name="database" value="${redis.database}" type="int" />
</bean>
</beans>
对应的classpath:properties/redis.properties.xml为：
#最大分配的对象数 redis.pool.maxActive=200 #最大能够保持idel状态的对象数 redis.pool.maxIdle=50 redis.pool.minIdle=10 redis.pool.maxWaitMillis=20000 #当池内没有返回对象时，最大等待时间 redis.pool.maxWait=300 #格式：redis://:[密码]@[服务器地址]:[端口]/[db index] redis.uri = redis://:12345@127.0.0.1:6379/0 redis.host = 127.0.0.1 redis.port = 6379 redis.timeout=30000 redis.password = 12345 redis.database = 0
二者操作代码类似，都是先注入连接池，然后通过连接池获得jedis实例，通过实例对象操作redis。
ShardedJedis操作：
@Autowired
private ShardedJedisPool shardedJedisPool;//注入ShardedJedisPool
@RequestMapping(value = "/demo_set",method = RequestMethod.GET)
@ResponseBody
public String demo_set(){
//获取ShardedJedis对象
ShardedJedis shardJedis = shardedJedisPool.getResource();
//存入键值对
shardJedis.set("key1","hello jedis");
//回收ShardedJedis实例
shardJedis.close();
return "set";
}
@RequestMapping(value = "/demo_get",method = RequestMethod.GET)
@ResponseBody
public String demo_get(){
ShardedJedis shardedJedis = shardedJedisPool.getResource();
//根据键值获得数据
String result = shardedJedis.get("key1");
shardedJedis.close();
return result;
}
Jedis操作：
@Autowired
private JedisPool jedisPool;//注入JedisPool
@RequestMapping(value = "/demo_set",method = RequestMethod.GET)
@ResponseBody
public String demo_set(){
//获取ShardedJedis对象
Jedis jedis = jedisPool.getResource();
//存入键值对
jedis.set("key2","hello jedis one");
//回收ShardedJedis实例
jedis.close();
return "set";
}
@RequestMapping(value = "/demo_get",method = RequestMethod.GET)
@ResponseBody
public String demo_get(){
Jedis jedis = jedisPool.getResource();
//根据键值获得数据
String result = jedis.get("key2");
jedis.close();
return result;
}
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