Springboot 使用Redis发布/订阅模式

1.新增依赖

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.2.49</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.2</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

2.配置redis

1. 配置连接

   spring:
       redis:
           host: localhost
           port: 6379
           password: root
   

2. 发布者配置

   @Configuration
   public class PublisherConfig {
       @Bean
       public RedisTemplate<String, Object> redisMessageTemplate(RedisConnectionFactory connectionFactory) {
           RedisTemplate<String, Object> template = new RedisTemplate<>();
           template.setConnectionFactory(connectionFactory);
           template.setDefaultSerializer(new FastJsonRedisSerializer<>(Object.class));
           return template;
       }
   }
   

3. 订阅者配置

   @Configuration
   public class ReceiverConfig {
   
       @Bean
       public RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory,MessageListenerAdapter userListenerAdapter,MessageListenerAdapter goodsListenerAdapter) {
           RedisMessageListenerContainer container = new RedisMessageListenerContainer();
           container.setConnectionFactory(connectionFactory);
           container.addMessageListener(userListenerAdapter, new PatternTopic("user"));
           container.addMessageListener(goodsListenerAdapter, new PatternTopic("goods"));
           return container;
       }
   
       @Bean
       public MessageListenerAdapter userListenerAdapter(UserReceiver receiver) {
           return new MessageListenerAdapter(receiver, "receiveMessage");
       }
   
       @Bean
       public MessageListenerAdapter goodsListenerAdapter(GoodsReceiver receiver) {
           return new MessageListenerAdapter(receiver, "receiveMessage");
       }
   
       @Bean
       public UserReceiver userReceiver() {
           return new UserReceiver();
       }
   
       @Bean
       public GoodsReceiver goodsReceiver() {
           return new GoodsReceiver();
       }
   
   }
   

3.消息模型

@Data
public class RedisMessage implements Serializable {
    public String msgId;
    public long createStamp;
}

@EqualsAndHashCode(callSuper = true)
@Data
public class GoodsMessage extends RedisMessage {
    private String goodsType;
    private String number;
}

@EqualsAndHashCode(callSuper = true)
@Data
public class UserMessage extends RedisMessage {
    private String userId;
    private String username;
    private String password;
}

4.消息发布者

@Service
public class Publisher {
    private final RedisTemplate<String, Object> redisMessageTemplate;

    @Autowired
    public Publisher(RedisTemplate<String, Object> redisMessageTemplate) {
        this.redisMessageTemplate = redisMessageTemplate;
    }

    public void pushMessage(String topic, RedisMessage message) {
        redisMessageTemplate.convertAndSend(topic,message);
    }
}

5.消息订阅者

public abstract class AbstractReceiver {
    public abstract void receiveMessage(Object message);
}

@Slf4j
public class GoodsReceiver extends AbstractReceiver {
    @Override
    public void receiveMessage(Object message) {
        log.info("接收到商品消息：{}", JSON.toJSONString(message));
    }
}

@Slf4j
public class UserReceiver extends AbstractReceiver {
    @Override
    public void receiveMessage(Object message) {
        log.info("接收到用户消息：{}", JSON.toJSONString(message));
    }
}

6.测试

@Test
public void pushMessage() {
    UserMessage userMessage = new UserMessage();
    userMessage.setMsgId(UUID.randomUUID().toString().replace("-",""));
    userMessage.setUserId("1");
    userMessage.setUsername("admin");
    userMessage.setUsername("root");
    userMessage.setCreateStamp(System.currentTimeMillis());
    publisher.pushMessage("user",userMessage);
    GoodsMessage goodsMessage = new GoodsMessage();
    goodsMessage.setMsgId(UUID.randomUUID().toString().replace("-",""));
    goodsMessage.setGoodsType("苹果");
    goodsMessage.setNumber("十箱");
    goodsMessage.setCreateStamp(System.currentTimeMillis());
    publisher.pushMessage("goods",goodsMessage);
}

测试结果如下：

2018-09-28 12:02:16.281  INFO 25244 --- [           main] org.qiqiang.redismq.core.PublisherTest   : Started PublisherTest in 2.889 seconds (JVM running for 3.723)
2018-09-28 12:02:16.544  INFO 25244 --- [    container-2] org.qiqiang.redismq.core.UserReceiver    : 接收到用户消息："{\"createStamp\":1538107336525,\"msgId\":\"62c60489199545209f036d5eeffc353e\",\"userId\":\"1\",\"username\":\"root\"}"
2018-09-28 12:02:16.547  INFO 25244 --- [    container-3] org.qiqiang.redismq.core.GoodsReceiver   : 接收到商品消息："{\"createStamp\":1538107336543,\"goodsType\":\"苹果\",\"msgId\":\"b0ee90c6635444c490afc691a3c5cf74\",\"number\":\"十箱\"}"
2018-09-28 12:02:16.551  INFO 25244 --- [       Thread-2] o.s.w.c.s.GenericWebApplicationContext   : Closing org.springframework.web.context.support.GenericWebApplicationContext@1a4927d6: startup date [Fri Sep 28 12:02:13 CST 2018]; root of context hierarchy
2018-09-28 12:02:16.552  INFO 25244 --- [       Thread-2] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 2147483647