spring整合redis

最新推荐文章于 2022-02-16 11:48:08 发布

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最新推荐文章于 2022-02-16 11:48:08 发布

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分类专栏： redis

本文链接：https://blog.youkuaiyun.com/weixin_42870683/article/details/103496932

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本文详细介绍如何在Spring项目中整合Redis，包括添加依赖、配置连接池、设置序列化方式及使用JdbcTemplate进行缓存操作。

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一.添加redis相关依赖
注：spring-data-redis的版本不能和jedis的版本冲突，否则会报xmlMapper相关的异常

        <!--redis相关 -->
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.7.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-redis</artifactId>
            <version>1.6.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
            <version>2.0</version>
        </dependency>

二.新建spring-redis.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    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/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd ">

    <!-- 连接池基本参数配置，类似数据库连接池 -->
    <context:property-placeholder location="classpath*:META-INF/props/redis.properties"
        ignore-unresolvable="true" />
    
    <!-- redis连接池 -->  
    <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxTotal" value="${redis.maxActive}" />
        <property name="maxIdle" value="${redis.maxIdle}" />
        <property name="testOnBorrow" value="${redis.testOnBorrow}" />
    </bean>

    <!-- 连接池配置，类似数据库连接池 -->
    <bean id="jedisConnectionFactory"
        class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
        <property name="hostName" value="${redis.host}"></property>
        <property name="port" value="${redis.port}"></property>
        <!-- <property name="password" value="${redis.pass}"></property> -->
        <property name="poolConfig" ref="poolConfig"></property>
    </bean>

    <!--redis操作模版,使用该对象可以操作redis  -->  
    <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate" >    
        <property name="connectionFactory" ref="jedisConnectionFactory" />    
        <!--如果不配置Serializer，那么存储的时候缺省使用String，如果用User类型存储，那么会提示错误User can't cast to String！！  -->    
        <property name="keySerializer" >    
            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />    
        </property>    
        <property name="valueSerializer" >    
            <bean class="org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer" />    
        </property>    
        <property name="hashKeySerializer">    
            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>    
        </property>    
        <property name="hashValueSerializer">    
            <bean class="org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer"/>    
        </property>    
        <!--开启事务  -->  
        <property name="enableTransactionSupport" value="true"></property>  
    </bean >   


</beans>

注：要把spring-redis.xml导入到root.xml文件里

<import resource="classpath:META-INF/spring/spring-redis.xml"/>

三.新建redis.properties文件

redis.host=127.0.0.1
redis.port=6379
redis.password=
redis.maxIdle=300
redis.maxActive=600
redis.maxWait=1000
redis.testOnBorrow=true

四.后台通过JdbcTemplate调用redis实现缓存

@Resource
private JdbcTemplate jdbcTemplate;

String redisKey="TEST";//key值
Map<String,Object> map = new HashMap<String, Object>();
map.put("key", 123);

//把map存入redis缓存
redisTemplate.opsForValue().set(redisKey, map,1L,TimeUnit.DAYS);//(键，值，缓存时间长度，时间单位)
//通过key获取map
Map<String,Object> data= (Map<String, Object>) redisTemplate.opsForValue().get(redisKey);