前言
Redis默认有16个库,默认连接的是index=0的那一个。这16个库直接是相互独立的。
一、在命令行中切换
select 1;
二、在Spring中如何切换
1、在RedisConnectionCommands中使用redisConnection.select(1);
2、在配置文件中设置(JedisConnectionFactory)
<!-- jedis的连接工厂 -->
<bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
<property name="hostName" value="${redis.host}"/>
<property name="port" value="${redis.port}"/>
<property name="database" value="${redis.database}"/>
<property name="password" value="${redis.pass}"/>
<property name="timeout" value="2000"/>
<property name="poolConfig" ref="poolConfig"/>
</bean>
/**
* Sets the index of the database used by this connection factory. Default is 0.
*
* @param index database index
*/
public void setDatabase(int index) {
Assert.isTrue(index >= 0, "invalid DB index (a positive index required)");
this.dbIndex = index;
}
spring-redis.xml完整配置文件
<?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:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util.xsd
"> <!--jedis的连接池配置-->
<bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
<!-- 最大空闲连接数量 -->
<property name="maxIdle" value="${redis.maxIdle}"/>
<!-- 最小空闲连接数量, 处理间隔时间为 timeBetweenEvictionRunsMillis -->
<property name="minIdle" value="${redis.minIdle}"/>
<!-- 池中持有的最大连接数量 -->
<property name="maxTotal" value="${redis.maxTotal}"/>
<!-- borrowObject 方法的最大等待时间 -->
<property name="maxWaitMillis" value="${redis.maxWait}"/>
<!-- 池中可用资源耗尽时, borrow 方法是否阻塞等待 maxWaitMillis 毫秒 -->
<property name="blockWhenExhausted" value="true"/>
<!-- borrowObject 时是否执行检测 -->
<property name="testOnBorrow" value="${redis.testOnBorrow}"/>
<!-- 是否检测空闲连接链接的有效性, 间隔时间为 timeBetweenEvictionRunsMillis -->
<property name="testWhileIdle" value="true"/>
<!-- 空闲对象被清除需要达到的最小空闲时间 -->
<property name="minEvictableIdleTimeMillis" value="${redis.minEvictableIdleTimeMillis}"/>
<!-- 空闲检测线程,sleep 间隔多长时间,去处理与idle相关的事情 -->
<property name="timeBetweenEvictionRunsMillis" value="${redis.timeBetweenEvictionRunsMillis}"/>
</bean>
<!-- jedis的连接工厂 -->
<bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
<property name="hostName" value="${redis.host}"/>
<property name="port" value="${redis.port}"/>
<property name="database" value="${redis.database}"/>
<property name="password" value="${redis.pass}"/>
<property name="timeout" value="2000"/>
<property name="poolConfig" ref="poolConfig"/>
</bean>
<!--redis实际使用的template-->
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
<property name="connectionFactory" ref="connectionFactory"/>
<property name="keySerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
</property>
<property name="valueSerializer">
<bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer"/>
</property>
</bean>
<!--spring session . 禁用 To disable the automatic configuration -->
<util:constant
static-field="org.springframework.session.data.redis.config.ConfigureRedisAction.NO_OP"/>
<!--spring session 的redis配置-->
<bean class="org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration">
<property name="maxInactiveIntervalInSeconds" value="3600"/>
</bean> </beans>