Springboot + Redis：整合键消息通知

浅浅的花香味﹌ 2023-02-17 03:49 1阅读 0赞

首先请确保redis已经成功开启了通知功能，可参考[《Redis 键空间通知》][Redis]。

Springboot demo文件目录如下：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70]

*  pom

<dependency>
    	<groupId>org.springframework.boot</groupId>
    	<artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>

*  application.yml  
    配置redis数据库信息

spring:
      redis:
        host: 127.0.0.1
        port: 6379
        database: 0
        password:

*  MessageListenerConfiguration  
    读取redis配置文件和开启监听

@Configuration
    public class MessageListenerConfiguration { 
    
        @Bean
        public RedisMessageListenerContainer listenerContainer(RedisConnectionFactory redisConnection) { 
            RedisMessageListenerContainer container = new RedisMessageListenerContainer();
            container.setConnectionFactory(redisConnection);
            Topic topic = new PatternTopic("__keyevent@0__:*");
    
            container.addMessageListener(new TopicMessageListener(), topic);
            return container;
        }
    }

*  TopicMessageListener  
    通知内容解析及后续的业务代码

public class TopicMessageListener implements MessageListener { 
    
        @Override
        public void onMessage(Message message, byte[] bytes) { 
            byte[] body = message.getBody();
            byte[] channel = message.getChannel();
    
            String key = new String(body);
            String topic = new String(channel);
            System.out.println(key);
            System.out.println(topic);
    
            //TODO:获取通知后的业务代码
    
        }
    }

然后我们启动项目，用以测试  
我们在命令行中分别进行赋值和删除的操作  
![在这里插入图片描述][20200612104839202.png]  
可以看到idea的打印结果中，出现了操作的key值和channel  
![在这里插入图片描述][20200612104855267.png]

[Redis]: https://blog.csdn.net/lt326030434/article/details/106708021
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200612104048227.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0,size_16,color_FFFFFF,t_70
[20200612104839202.png]: https://img-blog.csdnimg.cn/20200612104839202.png
[20200612104855267.png]: https://img-blog.csdnimg.cn/20200612104855267.png