【Spring Boot && Spring Cloud系列】在spring-data-Redis中如何使用切换库

时间:2022-09-10 20:36:51

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

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4        xmlns:util="http://www.springframework.org/schema/util"
 5        xsi:schemaLocation="
 6        http://www.springframework.org/schema/beans
 7        http://www.springframework.org/schema/beans/spring-beans.xsd
 8        http://www.springframework.org/schema/util
 9        http://www.springframework.org/schema/util/spring-util.xsd
10        ">
11 
12     <!--jedis的连接池配置-->
13     <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
14         <!-- 最大空闲连接数量 -->
15         <property name="maxIdle" value="${redis.maxIdle}"/>
16         <!-- 最小空闲连接数量, 处理间隔时间为 timeBetweenEvictionRunsMillis -->
17         <property name="minIdle" value="${redis.minIdle}"/>
18         <!-- 池中持有的最大连接数量 -->
19         <property name="maxTotal" value="${redis.maxTotal}"/>
20         <!-- borrowObject 方法的最大等待时间 -->
21         <property name="maxWaitMillis" value="${redis.maxWait}"/>
22         <!-- 池中可用资源耗尽时, borrow 方法是否阻塞等待 maxWaitMillis 毫秒 -->
23         <property name="blockWhenExhausted" value="true"/>
24         <!-- borrowObject 时是否执行检测 -->
25         <property name="testOnBorrow" value="${redis.testOnBorrow}"/>
26         <!-- 是否检测空闲连接链接的有效性, 间隔时间为 timeBetweenEvictionRunsMillis -->
27         <property name="testWhileIdle" value="true"/>
28         <!-- 空闲对象被清除需要达到的最小空闲时间 -->
29         <property name="minEvictableIdleTimeMillis" value="${redis.minEvictableIdleTimeMillis}"/>
30         <!-- 空闲检测线程,sleep 间隔多长时间,去处理与idle相关的事情 -->
31         <property name="timeBetweenEvictionRunsMillis" value="${redis.timeBetweenEvictionRunsMillis}"/>
32     </bean>
33     <!-- jedis的连接工厂 -->
34     <bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
35         <property name="hostName" value="${redis.host}"/>
36         <property name="port" value="${redis.port}"/>
37         <property name="database" value="${redis.database}"/>
38         <property name="password" value="${redis.pass}"/>
39         <property name="timeout" value="2000"/>
40         <property name="poolConfig" ref="poolConfig"/>
41     </bean>
42     <!--redis实际使用的template-->
43     <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
44         <property name="connectionFactory" ref="connectionFactory"/>
45         <property name="keySerializer">
46             <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
47         </property>
48         <property name="valueSerializer">
49             <bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer"/>
50         </property>
51     </bean>
52     <!--spring session . 禁用 To disable the automatic configuration  -->
53     <util:constant
54             static-field="org.springframework.session.data.redis.config.ConfigureRedisAction.NO_OP"/>
55     <!--spring session 的redis配置-->
56     <bean class="org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration">
57         <property name="maxInactiveIntervalInSeconds" value="3600"/>
58     </bean>
59 
60 </beans>