我们使用主流的SpringBoot框架整合RocketMQ来讲解,使用方便快捷;
最终项目结构如下:
具体步骤如下:
第一步:新建SpringBoot项目rocketmq-test
,引入rocketmq依赖,以及项目配置
1
2
3
4
5
|
<dependency>
<groupId>org.apache.rocketmq</groupId>
<artifactId>rocketmq-spring-boot-starter</artifactId>
<version> 2.2 . 0 </version>
</dependency>
|
完整pom.xml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
<?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 https://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> 2.5 . 4 </version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.java1234</groupId>
<artifactId>rocketmq-test</artifactId>
<version> 0.0 . 1 -SNAPSHOT</version>
<name>rocketmq-test</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version> 1.8 </java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.apache.rocketmq</groupId>
<artifactId>rocketmq-spring-boot-starter</artifactId>
<version> 2.2 . 0 </version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
|
另外我们项目配置文件需要指定nameserver地址,以及消息生产者和消息消费者组;
所以配置application.yml
:
1
2
3
4
5
6
|
rocketmq:
name-server: 127.0 . 0.1 : 9876
producer:
group: producer-demo1
consumer:
group: consumer-demo1
|
第二步:新建消息生产者Service类ProducerService
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
package com.java1234.rocketmq;
import org.apache.rocketmq.spring.core.RocketMQTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
/**
* 消息生产者
* @author java1234_小锋
* @site www.java1234.com
* @company 南通小锋网络科技有限公司
* @create 2021-08-22 22:16
*/
@Component ( "producerService" )
public class ProducerService {
@Autowired
private RocketMQTemplate rocketMQTemplate;
/**
* 发送简单消息
*/
public void sendMessage(){
for ( int i= 0 ;i< 1000 ;i++){
rocketMQTemplate.convertAndSend( "java1234-rocketmq" , "rocketmq大爷,你好!" +i);
}
}
}
|
SpringBoot给我们提供了RocketMQTemplate
模板类,我们利用这个类可以以多种形式发送消息;
另外这个类我们要加下@Component
注解,让Spring来管理实例,方便其他地方获取bean来使用;
发送方法指定Topic主题java1234-rocketmq
;
第三步:启动类获取ProducerService
实例,调用发送消息方法
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
package com.java1234;
import com.java1234.rocketmq.ProducerService;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
@SpringBootApplication
public class RocketmqTestApplication {
public static void main(String[] args) {
ConfigurableApplicationContext run = SpringApplication.run(RocketmqTestApplication. class , args);
ProducerService producerService = (ProducerService) run.getBean( "producerService" );
producerService.sendMessage();
}
}
|
我们获取ProducerService
实例,调用sendMessage
方法发送消息;
第四步:新建消息消费者Service类ConsumerService
,监听消息,消费消息
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
package com.java1234.rocketmq;
import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
import org.apache.rocketmq.spring.core.RocketMQListener;
import org.springframework.stereotype.Component;
/**
* 消息消费者
* @author java1234_小锋
* @site www.java1234.com
* @company 南通小锋网络科技有限公司
* @create 2021-08-22 22:40
*/
@RocketMQMessageListener (topic = "java1234-rocketmq" ,consumerGroup = "${rocketmq.consumer.group}" )
@Component
public class ConsumerService implements RocketMQListener<String> {
@Override
public void onMessage(String s) {
System.out.println( "收到消息内容:" +s);
}
}
|
消费者类要实现RocketMQListener
接口,以及动态指定消息类型String。
类上要加上**@RocketMQMessageListener**注解,指定topic主题java1234-rocketmq
,以及消费者组${rocketmq.consumer.group}
同样这个类上也要加上@Component
注解,让Spring来管理bean实例;
第五步:再次启动,测试消息消费
测试OK,成功消费!
到此这篇关于SpringBoot整合RocketMQ实现消息发送和接收的文章就介绍到这了,更多相关SpringBoot整合RocketMQ消息内容请搜索服务器之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持服务器之家!
原文链接:https://blog.csdn.net/caoli201314/article/details/119900570