Spring boot+redis实现消息发布与订阅的代码

    一.创建spring boot项目

    
    <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-data-redis</artifactId>
      </dependency>
      <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-web</artifactId>
      </dependency>
      <dependency>
       <groupId>com.alibaba</groupId>
       <artifactId>fastjson</artifactId>
       <version>1.2.41</version>
      </dependency>

    二.编辑yml配置文件

    
    server:
     port: 7888
    # 日志配置
    logging:
     config: classpath:log/logback.xml
     level:
     cn.com.dhcc: info
     org.springframework: info
     org.springframework.web: info
     com.alibaba.nacos.client.naming: error
    spring:
     redis:
      host: localhost
      port: 6379
      password: *********
      database: 1
      jedis:
      pool:
      max-idle: 8
      max-active: 8
      max-wait: -1
      min-idle: 0
      timeout: 5000

    三.配置Redis

    
    @Configuration
    public class RedisConfiguration {
    
     /**
      * 实例化 RedisTemplate 对象
      *
      * @return
      */
     @Bean("RedisTemplateS")
     public RedisTemplate<String, Object> functionDomainRedisTemplate(RedisConnectionFactory redisConnectionFactory) {
      RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
      initDomainRedisTemplate(redisTemplate, redisConnectionFactory);
      return redisTemplate;
     }
    
     /**
      * 设置数据存入 redis 的序列化方式,并开启事务
      * 
      * @param redisTemplate
      * @param factory
      */
     private void initDomainRedisTemplate(@Qualifier("RedisTemplateS") RedisTemplate<String, Object> redisTemplate, RedisConnectionFactory factory) {
      // 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!
      redisTemplate.setKeySerializer(new StringRedisSerializer());
      redisTemplate.setHashKeySerializer(new StringRedisSerializer());
    
      FastJsonRedisSerializer<Object> fastJsonRedisSerializer = new FastJsonRedisSerializer<Object>(Object.class);
      redisTemplate.setHashValueSerializer(fastJsonRedisSerializer);
      redisTemplate.setValueSerializer(fastJsonRedisSerializer);
      //redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
      //redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
      // 开启事务
      redisTemplate.setEnableTransactionSupport(true);
      redisTemplate.setConnectionFactory(factory);
     }
    
     /**
      * 注入封装RedisTemplate @Title: redisUtil @return RedisUtil @date
      * 
      */
     @Bean(name = "redisUtils")
     public RedisUtils redisUtil(@Qualifier("RedisTemplateS") RedisTemplate<String, Object> redisTemplate) {
      RedisUtils redisUtil = new RedisUtils();
      redisUtil.setRedisTemplate(redisTemplate);
      return redisUtil;
     }

    四.编写RedisUtil消息发布方法

    
    public class RedisUtils {
     private static final Logger log = LoggerFactory.getLogger(RedisUtils.class);
    
     private RedisTemplate<String, Object> redisTemplate;
    
     public void setRedisTemplate(RedisTemplate<String, Object> redisTemplate) {
      this.redisTemplate = redisTemplate;
     }
    
     public void publish(String channal ,Object obj) {
      redisTemplate.convertAndSend(channal,obj );
     }
    }

    五.配置消息监听

    
    @Configuration
    public class RedisMessageListener {
    
     /**
      * 创建连接工厂
      * @param connectionFactory
      * @param listenerAdapter
      * @return
      */
     @Bean
     public RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory,
                 MessageListenerAdapter listenerAdapter,MessageListenerAdapter listenerAdapter2){
      RedisMessageListenerContainer container = new RedisMessageListenerContainer();
      container.setConnectionFactory(connectionFactory);
      //接受消息的key
      container.addMessageListener(listenerAdapter,new PatternTopic("phone"));
      return container;
     }
    
     /**
      * 绑定消息监听者和接收监听的方法
      * @param receiver
      * @return
      */
     @Bean
     public MessageListenerAdapter listenerAdapter(ReceiverRedisMessage receiver){
      return new MessageListenerAdapter(receiver,"receiveMessage");
     }
    
     /**
      * 注册订阅者
      * @param latch
      * @return
      */
     @Bean
     ReceiverRedisMessage receiver(CountDownLatch latch) {
      return new ReceiverRedisMessage(latch);
     }
    
     /**
      * 计数器,用来控制线程
      * @return
      */
     @Bean
     public CountDownLatch latch(){
      return new CountDownLatch(1);//指定了计数的次数 1
     }
    }

    六.消息订阅方法

    
    public class ReceiverRedisMessage {
    
     private static final Logger log = LoggerFactory.getLogger(ReceiverRedisMessage.class);
     private CountDownLatch latch;
    
     @Autowired
     public ReceiverRedisMessage(CountDownLatch latch) {
      this.latch = latch;
     }
    
     /**
      * 队列消息接收方法
      *
      * @param jsonMsg
      */
     public void receiveMessage(String jsonMsg) {
      log.info("[开始消费REDIS消息队列phone数据...]");
      try {
       log.info("监听者收到消息:{}", jsonMsg);
       JSONObject exJson = JSONObject.parseObject(jsonMsg);
       User user = JSON.toJavaObject(exJson, User.class);
       System.out.println("转化为对象 :"+user);
       log.info("[消费REDIS消息队列phone数据成功.]");
      } catch (Exception e) {
       log.error("[消费REDIS消息队列phone数据失败,失败信息:{}]", e.getMessage());
      }
      latch.countDown();
     }
    }

    七.定时消息发布测试

    
    @EnableScheduling
    @Component
    public class PublisherController {
    
     private static final Logger log = LoggerFactory.getLogger(PublisherController.class);
    
     @Autowired
     private RedisUtils redisUtils;
    
     @Scheduled(fixedRate = 5000)
     public String pubMsg() {
      User user=new User(1, "尚***", 26,"男","陕西省xxxx市xxxxxx县");
      redisUtils.publish("phone", user);
      log.info("Publisher sendes Topic... ");
      return "success";
     }
    }

    八.测试结果

    九.发布对象User实体

    
    public class User implements Serializable {
    
     /**
      * 
      */
     private static final long serialVersionUID = 1L;
     private int id;
     private String name;
     private int age;
     private String sex;
     private String address;
      .....................
    }

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