activeMq安装和使用(二)

在`application.properties`（或`application.yml`）中配置ActiveMQ的连接信息,配置文件参考

activemq:
      or-start: true # 是否启用mgtt服务
      broker-url: failover:(tcp://localhost:61616)?initialReconnectDelay=1000
      user: admin
      password: admin
      topic-name: mytopic
      jms:
        pub-sub-domain: true

`pom.xml`中添加必要的依赖项 

 <dependency>
	<groupId>org.springframework.boot</groupId>
 	<artifactId>spring-boot-starter-activemq</artifactId>
 	<version>2.3.5.RELEASE</version>
</dependency>

config代码

import org.apache.activemq.command.ActiveMQTopic;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jms.config.DefaultJmsListenerContainerFactory;
import org.springframework.jms.config.JmsListenerContainerFactory;
import org.springframework.beans.factory.annotation.Value;
import javax.jms.ConnectionFactory;
import javax.jms.Topic;

@Configuration
public class ActiveMqConfig {

    @Value("${activemq.topic-name:mytopic}")
    private  String defaultTopic   ;

    @Bean
    public Topic topic() {
        return new ActiveMQTopic(defaultTopic);
    }

    @Bean
    public JmsListenerContainerFactory<?> topicListenerFactory(ConnectionFactory connectionFactory) {
        DefaultJmsListenerContainerFactory factory = new DefaultJmsListenerContainerFactory();
        factory.setPubSubDomain(true);
        factory.setConnectionFactory(connectionFactory);
        return factory;
    }

}

发布消息demo

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jms.core.JmsMessagingTemplate;
import org.springframework.stereotype.Service;

import javax.jms.Topic;

@Service
public class ActiveMQPublisher {

    @Autowired
    private Topic topic;

    @Autowired
    private JmsMessagingTemplate jmsTemplate;

    /**
     *  使用默认bean配置的名称发送数据
     */
    public void sendStringDefaultTopic(String message) {
        this.jmsTemplate.convertAndSend(topic, message);
    }

}

测试接口

import com.smart.framework.common.core.annotation.NoAuthInterface;
import com.smart.framework.common.core.object.ResponseResult;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping(value="/provider")
public class BootDefaultTopicProviderController {
    @Autowired
    private ActiveMQPublisher activeMQPublisher;

    @NoAuthInterface
    @PostMapping(value = "/sendMessage")
    public ResponseResult<String> sendStringDefaultTopic(@RequestParam(name="message",required = true) String message) throws Exception {
        activeMQPublisher.sendStringDefaultTopic(message);
        return ResponseResult.success(message);
    }
}

客户端代码

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jms.annotation.JmsListener;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.List;

@Component
@Slf4j
public class TopicCustomer {

    @JmsListener(destination = "${spring.activemg.topic-name:mytopic}", containerFactory = "topicListenerFactory")
    public void receiveTopic(String message) throws JsonProcessingException {
        log.info("TopicCustomer 收到消息：" + message); 
    } 
}