Spring整合redis

Spring整合redis

Redis  /  管理员 发布于 2021-05-01 15:14:25   15

pom.xml

<dependencies><!-- Spring Data - Redis Library --><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-redis</artifactId><version>1.4.0.RELEASE</version></dependency><!-- Jedis Driver Library --><dependency><groupId>redis.clients</groupId><artifactId>jedis</artifactId><version>2.6.0</version></dependency><!-- Spring Core --><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>4.1.1.RELEASE</version></dependency>        <!-- spring-data-redis --><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-redis</artifactId><version>1.4.1.RELEASE</version></dependency></dependencies>

beans.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"xmlns:context="http://www.springframework.org/schema/context"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"xmlns:p="http://www.springframework.org/schema/p"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        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"><!-- Scanning the Spring Beans --><context:component-scan base-package="com.ljn.beans"></context:component-scan>    <bean id="propertyConfigurerRedis" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">        <property name="locations">            <list>                <value>classpath:redis.properties</value>            </list>        </property>    </bean><bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"><property name="maxTotal" value="${redis.pool.maxTotal}" /><property name="maxIdle" value="${redis.pool.maxIdle}" /><property name="maxWaitMillis" value="${redis.pool.maxWaitMillis}" /></bean><!-- Redis Connection Factory --><bean id="jedisConnFactory"class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"><property name="hostName" value="${redis.ip}" /><property name="port" value="${redis.port}" /><property name="poolConfig" ref="jedisPoolConfig" /></bean><!-- Redis Template --><bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate"p:connection-factory-ref="jedisConnFactory" /></beans>

redis.properties

redis.pool.maxTotal=1024redis.pool.maxIdle=200redis.pool.maxWaitMillis=3000redis.pool.testOnBorrow=trueredis.ip=10.75.201.3redis.port=63790

注意，旧版本的写法：

redis.pool.maxActive=1024

redis.pool.maxIdle=200

redis.pool.maxWait=1000

redis.pool.testOnBorrow=true

redis.ip=10.11.20.140

redis.port=6379

代码：

import org.springframework.beans.factory.annotation.Autowired;import org.springframework.data.redis.core.RedisTemplate;import org.springframework.stereotype.Component;@Componentpublic class RegistrationBean {@Autowiredprivate RedisTemplate<String,User> redisTemplate;public RedisTemplate<String, User> getRedisTemplate() {return redisTemplate;}public void setRedisTemplate(RedisTemplate<String, User> redisTemplate) {this.redisTemplate = redisTemplate;}}

  RegistrationBean bean = (RegistrationBean)context.getBean("registrationBean");// Persisting Inside the Hash User objectbean.getRedisTemplate().opsForHash().put("{a}UserA", user.hashCode(),user);// Retrieving the User object from the Redis by using the suggested keyUser x = (User)bean.getRedisTemplate().opsForHash().get("{b}UserA", user.hashCode());System.out.println(x.getFullName());

注意到上面的getRedisTemplate().opsForHash().set()方法，第一个参数是key本身，第二个参数是object的hashcode，第三个参数是object本身。
例如可以写代码测试：

        user.setFullName("ljn");        bean.getRedisTemplate().opsForHash().put("{b}UserA", user.hashCode(),user);        // Retrieving the User object from the Redis by using the suggested key        User y = (User)bean.getRedisTemplate().opsForHash().get("{b}UserA", user.hashCode());        System.out.println(y.getFullName());

这个时候的key跟前面的一样，但取得的value不一样，为修改后的值，getFullName输出：ljn