spring中订阅redis键值过期消息通知

1、首先启用redis通知功能(ubuntu下操作):
编辑/etc/redis/redis.conf文件,添加或启用以下内容(过期通知):

notify-keyspace-events Ex

或者登陆redis-cli之后,输入以下命令:

config set notify-keyspace-events Ex

更多通知详见:http://redis.io/topics/notifications#configuration

2、Java Spring中配置监听

接口类:

import java.io.Serializable;
import java.util.Map; public interface IMessageDelegate {
void handleMessage(String message);
void handleMessage(Map message);
void handleMessage(byte[] message);
void handleMessage(Serializable message);
void handleMessage(Serializable message, String channel);
}

实现类:

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.stereotype.Service;
import rhxtune.smarthome.api.interfaces.IMessageDelegate;
import java.io.Serializable;
import java.util.Map; @Service
public class DefaultMessageDelegate implements IMessageDelegate {
public static Logger logger = LogManager.getLogger(DefaultMessageDelegate.class.getName()); @Override
public void handleMessage(String message) {
logger.info("handleMessage1:" + message);
} @Override
public void handleMessage(Map message) {
logger.info("handleMessage2:" + message);
} @Override
public void handleMessage(byte[] message) {
logger.info("handleMessage3:" + message);
} @Override
public void handleMessage(Serializable message) {
logger.info("handleMessage4:" + message);
} @Override
public void handleMessage(Serializable message, String channel) {
logger.info("handleMessage5:" + message + channel);
}
}

spring-redis.xml中配置:

<?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"
xmlns:redis="http://www.springframework.org/schema/redis"
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/redis http://www.springframework.org/schema/redis/spring-redis.xsd">
<!--<context:component-scan base-package="rhxtune.smarthome.api.repositorys" />-->
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxTotal" value="${redis.maxTotal}"></property>
<property name="maxIdle" value="${redis.maxIdle}"></property>
<property name="minIdle" value="${redis.minIdle}"></property>
<property name="maxWaitMillis" value="${redis.maxWaitMillis}"></property>
<property name="testOnBorrow" value="${redis.testOnBorrow}"></property>
</bean>
<bean id="jedisConnFactory"
class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" destroy-method="destroy">
<property name="hostName" value="${redis.hostname}" />
<property name="port" value="${redis.port}" />
<property name="timeout" value="${redis.timeout}" />
<property name="database" value="${redis.database}" />
<property name="password" value="${redis.password}" />
<property name="usePool" value="true" />
<property name="poolConfig" ref="jedisPoolConfig" />
</bean>
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
<!-- 序列化方式 建议key/hashKey采用StringRedisSerializer。 -->
<property name="keySerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />
</property>
<property name="hashKeySerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />
</property>
<property name="valueSerializer">
<bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" />
</property>
<property name="hashValueSerializer">
<bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" />
</property>
<property name="connectionFactory" ref="jedisConnFactory" />
</bean>
<!-- 对string操作的封装 -->
<bean id="stringRedisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
<property name="connectionFactory" ref="jedisConnFactory" />
</bean>
<!-- 设置redis消息订阅(方式1) -->
<!--<bean id="listener" class="rhxtune.smarthome.api.services.DefaultMessageDelegate" />
<redis:listener-container connection-factory="jedisConnFactory">
<redis:listener ref="listener" method="handleMessage" topic="__keyevent@1__:expired" />
</redis:listener-container>-->
<!-- 设置redis消息订阅(方式2) -->
<bean id="messageListener"
class="org.springframework.data.redis.listener.adapter.MessageListenerAdapter">
<constructor-arg>
<bean class="rhxtune.smarthome.api.services.DefaultMessageDelegate" />
</constructor-arg>
</bean>
<bean id="redisContainer" class="org.springframework.data.redis.listener.RedisMessageListenerContainer">
<property name="connectionFactory" ref="jedisConnFactory" />
<property name="messageListeners">
<map>
<entry key-ref="messageListener">
<list>
<bean class="org.springframework.data.redis.listener.ChannelTopic">
<constructor-arg value="__keyevent@1__:expired" />
</bean>
<bean class="org.springframework.data.redis.listener.PatternTopic">
<constructor-arg value="*" />
</bean>
<bean class="org.springframework.data.redis.listener.PatternTopic">
<constructor-arg value="'__key*__:*" />
</bean>
</list>
</entry>
</map>
</property>
</bean>
</beans>

更多详情参见:http://docs.spring.io/spring-data/redis/docs/1.7.1.RELEASE/reference/html/#redis:pubsub:subscribe

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