内容简介:请参考笔者另一篇博客,有详细介绍:新建一个springboot项目,并且修改application.yml文件,pom如下:
本篇博客将介绍使用 redis 作为消息中间件和springboot的整合使用;
安装配置redis
请参考笔者另一篇博客,有详细介绍: https://jsbintask.cn/2019/01/24/middleware/redis-install/#more
整合springboot
新建项目
新建一个springboot项目,并且修改application.yml文件,pom如下:
spring: redis: host: youripaddress password: jsbintask
host和password修改成自己的服务器用户名密码。pom:
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.2.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>cn.jsbintask</groupId> <artifactId>springboot-redis-learning</artifactId> <version>0.0.1-SNAPSHOT</version> <name>springboot-redis-learning</name> <description>Demo project for Spring Boot redis</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
消息消费者(接收者)
编写一个消息消费者类:
@Log @Component public class RedisMessageReceiver { @Autowired private CountDownLatch countDownLatch; public void receivedMsg(String msg) { log.info("received msg: " + msg); // 计数,减一 countDownLatch.countDown(); } }
并且加入@Component注解,将其作为bean归spring管理,并且通过@Autowried注入了一个CountdownLatch类。
将消息消费者作为监听器监听 redis的消息:
@Configuration public class RedisConfig { public static final String MSG_TOPIC = "chat"; @Bean public CountDownLatch countDownLatch() { return new CountDownLatch(1); } /** * 消息消费者 适配器,其中 receivedMsg为定义的消费者的消费方法,必须保持一致 */ @Bean MessageListenerAdapter listenerAdapter(RedisMessageReceiver receiver) { return new MessageListenerAdapter(receiver, "receivedMsg"); } @Bean StringRedisTemplate template(RedisConnectionFactory connectionFactory) { return new StringRedisTemplate(connectionFactory); } /** * 消息监听容器,将适配器加入, 注意此处的 topic */ @Bean RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory, MessageListenerAdapter listenerAdapter) { RedisMessageListenerContainer container = new RedisMessageListenerContainer(); container.setConnectionFactory(connectionFactory); container.addMessageListener(listenerAdapter, new PatternTopic(MSG_TOPIC)); return container; } }
启动测试类,发送消息
@SpringBootApplication public class SpringbootRedisLearningApplication { public static void main(String[] args) throws Exception { ConfigurableApplicationContext applicationContext = SpringApplication.run(SpringbootRedisLearningApplication.class, args); //从 spring中取出已经有的bean CountDownLatch countDownLatch = applicationContext.getBean(CountDownLatch.class); StringRedisTemplate stringRedisTemplate = applicationContext.getBean(StringRedisTemplate.class); stringRedisTemplate.convertAndSend(RedisConfig.MSG_TOPIC, "hello from jsbintask."); // 一直等待消息被接收,没接收不退出 countDownLatch.await(); } }
启动,查看控制台:收到消息并且打印:
这样redis作为消息队列就成功了。 源码地址: https://github.com/jsbintask22/springboot-redis-learning
本文原创地址: https://jsbintask.cn/2019/01/25/springboot/springboot-redis-jms/ ,未经允许,禁止转载。
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