1、 说明
Springboot集成RocketMQ时需要特别注意版本问题,否则会出现各类启动报错问题,这里使用的springboot 版本:2.2.7.RELEASE
, RocketMq版本:2.2.3
2、集成过程
- pom文件引用
这里网上有单独在引用rocketmq-client
依赖包的,是不需要的,已经包含在rocketmq-spring-boot-starter
依赖包中。
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.7.RELEASE</version>
</parent>
<dependency>
<groupId>org.apache.rocketmq</groupId>
<artifactId>rocketmq-spring-boot-starter</artifactId>
<version>2.1.1</version>
</dependency>
-
yml
文件配置
spring:
# 数据库信息
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/longfamily?useUnicode=true&characterEncoding=utf-8&userSSL=false
username: root
password: 123456
##RocketMq配置
rocketmq:
#nameservice服务器地址(多个以英文逗号隔开)
# 注意高版本下使用的是name-server,低版本使用的是 nameServer。
name-server: 10.0.164.31:9876
producer:
group: test
这里把spring
配置也贴出来,是想说明rocketMq与spring在yaml文件中是同一级别(容易当成spring节点下面的子节点)。否则会启动报错。
- 消费者
@Component
@RocketMQMessageListener(consumerGroup = "H", topic = RocketMQTopic.TOPIC_ORDER)
public class TestMQListener implements RocketMQListener<String> {
@Override
public void onMessage(String message) {
System.out.println("消费者收到信息:==="+message);
}
}
消费者是通过RocketMQMessageListener
来监听Topc
, 通过实现RocketMQListener <T>接口实现其onMessage(T t)方法来处理接收到的消息
- 生产者
这里同意封装了RocketMQ发送消息的工具类。
@Slf4j
@Component
public class RocketMQUtils {
@Resource
private RocketMQTemplate rocketMQTemplate;
/**
* 异步发送MQ消息
*/
public void sendMessage(Long id, final String topic, final String context, Boolean isExternal) {
try {
log.debug("Sending message to MQ topic {}, context {}", topic, context);
SendCallback callback = new SendCallback() {
@Override
public void onSuccess(SendResult sendResult) {
//打印msgId用来以备查验,外部消息发送mq成功则任务置为成功
log.info("Success sending message to MQ: {}, context: {}, msgId: {}", topic, context, sendResult.getMsgId());
}
@Override
public void onException(Throwable e) {
log.error("Failed to send message to MQ {}, msg {}, cause {}", topic, context, Throwables.getStackTraceAsString(e));
}
};
rocketMQTemplate.asyncSend(topic, context, callback);
} catch (Exception e) {
log.error("Failed to send message to MQ! message: {}, stackTrace: {}", context, Throwables.getStackTraceAsString(e));
}
}
}
- 测试发送消息接口
@RestController
@RequestMapping("/api/test")
public class CommonTestController {
@Autowired
private RocketMQUtils rocketMQUtils;
// mq
@PostMapping("/mq/send")
public void operateRocketMQ(){
rocketMQUtils.sendMessage(1L, RocketMQTopic.TOPIC_ORDER,"firstContext",true);
}
- 运行结果
[2023-02-27 10:17:30.741] [DEBUG] [T:http-nio-8061-exec-3][tid=][Class:c.g.c.u.RocketMQUtils -> sendMessage]|Sending message to MQ topic topic-order, context firstContext
[2023-02-27 10:17:30.760] [INFO] [T:NettyClientPublicExecutor_2][tid=][Class:c.g.c.u.RocketMQUtils -> onSuccess]|Success sending message to MQ: topic-order, context: firstContext, msgId: 0000010169EE18B4AAC2881AB17B0001
消费者收到信息:===firstContext
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