这篇文章主要讲解了“redis消息队列的实现方法”，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习“redis消息队列的实现方法”吧！
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方式一：通过list的阻塞读取命令，blpop或者brpop
消费者
public class Consumer extends DemoApplicationTests{
@Test
public void consume(){
int timeout = 0;//永不超时
String key = "test_que";
//list集合 第一个元素为key值，第二个元素为弹出的元素值;当超时返回[null]
while(true){
List obj = redisTemplate.executePipelined(new RedisCallback() {
@Override
public Object doInRedis(RedisConnection connection) throws DataAccessException {
//队列没有元素会阻塞操作，直到队列获取新的元素或超时
return connection.bLPop(timeout,key.getBytes());
}
},new StringRedisSerializer());
for(Object o:obj){
System.out.println("---------------"+o);
}
}
}
} 生产者
public class Productor extends DemoApplicationTests {
@Test
public void generateMsg() {
String key = "test_que";
redisTemplate.opsForList().leftPush(key,"hht2");
}
} 方式二：Pub/Sub（发布/订阅）使用的 spring boot
依赖包
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-data-redis
org.springframework.boot
spring-boot-starter-test
test
org.apache.commons
commons-pool2
配置类
@Configuration
@AutoConfigureAfter(RedisAutoConfiguration.class)
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {
/**
* 配置自定义redisTemplate
* @return
*/
@Bean
RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory) {
RedisTemplate template = new RedisTemplate<>();
template.setConnectionFactory(redisConnectionFactory);
//使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值
Jackson2JsonRedisSerializer serializer = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper mapper = new ObjectMapper();
mapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
serializer.setObjectMapper(mapper);
template.setValueSerializer(serializer);
//使用StringRedisSerializer来序列化和反序列化redis的key值
template.setKeySerializer(new StringRedisSerializer());
template.setHashKeySerializer(new StringRedisSerializer());
template.setHashValueSerializer(serializer);
template.afterPropertiesSet();
return template;
}
/**
* 序列化定制
*
* @return
*/
@Bean
public Jackson2JsonRedisSerializer jackson2JsonSerializer() {
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(
Object.class);
// 初始化objectmapper
ObjectMapper mapper = new ObjectMapper();
mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(mapper);
return jackson2JsonRedisSerializer;
}
/**
* 消息监听器，使用MessageAdapter可实现自动化解码及方法代理
*
* @return
*/
@Bean
public MessageListenerAdapter listener(Jackson2JsonRedisSerializer jackson2JsonRedisSerializer,
MessageSubscriber subscriber) {
MessageListenerAdapter adapter = new MessageListenerAdapter(subscriber, "onMessage");
adapter.setSerializer(jackson2JsonRedisSerializer);
adapter.afterPropertiesSet();
return adapter;
}
/**
* 将订阅器绑定到容器
*
* @param connectionFactory
* @param listenerAdapter
* @return
*/
@Bean
public RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory,
MessageListenerAdapter listener) {
RedisMessageListenerContainer container = new RedisMessageListenerContainer();
container.setConnectionFactory(connectionFactory);
container.addMessageListener(listener, new PatternTopic("/redis/*"));
return container;
}
} 模拟消息发布类
@Service
public class RedisPubSub {
private static final Logger logger = LoggerFactory.getLogger(RedisPubSub.class);
@Autowired
private RedisTemplate redisTemplate;
private ChannelTopic topic = new ChannelTopic("/redis/pubsub");
@Scheduled(initialDelay = 5000, fixedDelay = 10000)
private void schedule() {
logger.info("publish message");
publish("admin", "hey you must go now!");
}
/**
* 推送消息
*
* @param publisher
* @param message
*/
public void publish(String publisher, String content) {
logger.info("message send {} by {}", content, publisher);
redisTemplate.convertAndSend(topic.getTopic(), content);
}
} 模拟消息接收类
@Component
public class MessageSubscriber {
Logger logger = LoggerFactory.getLogger(MessageSubscriber.class);
public void onMessage(String message, String pattern) {
logger.info("topic {} received {} ", pattern, message);
}
} 启动类
@SpringBootApplication
@EnableScheduling
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
} 感谢各位的阅读，以上就是“redis消息队列的实现方法”的内容了，经过本文的学习后，相信大家对redis消息队列的实现方法这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是创新互联，小编将为大家推送更多相关知识点的文章，欢迎关注！
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