jedis是redis的java客戶端，spring將redis連接池作為一個(gè)bean配置。
redis連接池分為兩種，一種是“redis.clients.jedis.ShardedJedisPool”，這是基于hash算法的一種分布式集群redis客戶端連接池。
另一種是“redis.clients.jedis.JedisPool”，這是單機(jī)環(huán)境適用的redis連接池。
maven導(dǎo)入相關(guān)包：
<!-- redis依賴包 --> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.9.0</version> </dependency>
ShardedJedisPool是redis集群客戶端的對(duì)象池，可以通過他來操作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 --> <!--如果你有多個(gè)數(shù)據(jù)源需要通過<context:property-placeholder管理，且不愿意放在一個(gè)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的相關(guān)配置--> <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"> <!--新版是maxTotal，舊版是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="${redis.uri}" /> </bean> </list> </constructor-arg> </bean></beans>下面是單機(jī)環(huán)境下redis連接池的配置：
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 引入jedis的properties配置文件 --> <!--如果你有多個(gè)數(shù)據(jù)源需要通過<context:property-placeholder管理，且不愿意放在一個(gè)配置文件里，那么一定要加上ignore-unresolvable=“true"--> <context:property-placeholder location="classpath:properties/redis.properties" ignore-unresolvable="true" /> <!--Jedis連接池的相關(guān)配置--> <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"> <!--新版是maxTotal，舊版是maxActive--> <property name="maxTotal"> <value>${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>對(duì)應(yīng)的classpath:properties/redis.properties.xml為：
#最大分配的對(duì)象數(shù)redis.pool.maxActive=200#最大能夠保持idel狀態(tài)的對(duì)象數(shù)redis.pool.maxIdle=50redis.pool.minIdle=10redis.pool.maxWaitMillis=20000#當(dāng)池內(nèi)沒有返回對(duì)象時(shí)，最大等待時(shí)間redis.pool.maxWait=300#格式：redis://:[密碼]@[服務(wù)器地址]:[端口]/[db index]redis.uri = redis://:12345@127.0.0.1:6379/0redis.host = 127.0.0.1redis.port = 6379redis.timeout=30000redis.password = 12345redis.database = 0
二者操作代碼類似，都是先注入連接池，然后通過連接池獲得jedis實(shí)例，通過實(shí)例對(duì)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(){ //獲取ShardedJedis對(duì)象 ShardedJedis shardJedis = shardedJedisPool.getResource(); //存入鍵值對(duì) shardJedis.set("key1","hello jedis"); //回收ShardedJedis實(shí)例 shardJedis.close(); return "set"; } @RequestMapping(value = "/demo_get",method = RequestMethod.GET) @ResponseBody public String demo_get(){ ShardedJedis shardedJedis = shardedJedisPool.getResource(); //根據(jù)鍵值獲得數(shù)據(jù) 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(){ //獲取ShardedJedis對(duì)象 Jedis jedis = jedisPool.getResource(); //存入鍵值對(duì) jedis.set("key2","hello jedis one"); //回收ShardedJedis實(shí)例 jedis.close(); return "set"; } @RequestMapping(value = "/demo_get",method = RequestMethod.GET) @ResponseBody public String demo_get(){ Jedis jedis = jedisPool.getResource(); //根據(jù)鍵值獲得數(shù)據(jù) String result = jedis.get("key2"); jedis.close(); return result; }總結(jié)
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