https://www.cnblogs.com/SjhCode/p/ruoyiActiveMQ.html
ActiveMQ 在若依中的配置,这里使用的传输协议是stomp协议
消费时第一时间要确定对方打开了端口,是可以连接的状态。(cmd命令行测试telnet, ping)
ActiveMQ
消费消息consumeMsg:在处理业务时,需要判断JSON里面每一条数据有没有存在,当遇到不存在的JSON,需要抛出异常或者跳过本次,及时结束消费,以免造成死循环。
需要换多几条json测试,以免消费不成功
本地如何测试:
https://activemq.apache.org/download.html ;下载ActiveMQ
在\apache-activemq-5.xx.x\bin\win64 ,启动activemq.bat,不能关闭窗口
浏览器访问http://127.0.0.1:8161/ ,用户名admin ,密码admin
创建Queue ,Queue Name就是通道名称,(下面代码中,QUEUE_FLIGHT_ASSIGNPARK=“”; 需要和配合这里修改)
然后就是写完java代码之后启动项目,通过网站的对应Queue, 点击sent to;输入Message body;往通道里面放消息;
如果此时java代码没报错,并且打印出对应的log,说明就消费成功了,网站上会显示消息已经被消费了,待消费数量为0,消费者数量为1,消息出队+1;
接入测试:
cmd命令行测试telnet
对方提前往队列里面加消息
根据三方提供的host,port,user,password,queuename对应修改,连上后会消费到消息则对接成功
导入ActiveMQ需要的jar包
<!--ActiveMQ--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-activemq</artifactId> </dependency> <dependency> <groupId>org.apache.activemq</groupId> <artifactId>activemq-all</artifactId> <version>5.14.5</version> </dependency>
配置文件
#activemq activemq: host: 127.0.0.1 port: 61613 user: admin password: admin pool: enabled: true max-connections: 10 # #默认情况下activemq提供的是queue模式,若要使用topic模式需要配置下面配置 # pub-sub-domain: true
生产者
package com.ruoyi.web.controller.ActiveMQ; import org.apache.activemq.transport.stomp.Stomp; import org.apache.activemq.transport.stomp.StompConnection; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.context.annotation.Bean; import org.springframework.stereotype.Component; import java.util.HashMap; import java.util.UUID; //生产者 @Component public class JmsProducer { @Autowired JmsConsumer jmsConsumer; @Value("${spring.activemq.user}") private String userName; @Value("${spring.activemq.password}") private String password; @Value("${spring.activemq.host}") private String host; @Value("${spring.activemq.port}") private Integer port; //连接 public StompConnection connectionFactory() throws Exception { StompConnection conn = new StompConnection(); conn.open(host, port); conn.connect(userName, password); return conn; } /** * 发送JMS消息 * * @throws Exception exception */ public void sendMessage(String queueName, String message) throws Exception { StompConnection stompConnection = connectionFactory(); String tx = UUID.randomUUID().toString().replaceAll("-", ""); HashMap<String, String> headers = new HashMap<>(); headers.put(Stomp.Headers.Send.PERSISTENT, "true"); stompConnection.begin(tx); stompConnection.send(queueName, message, tx, headers); stompConnection.commit(tx); stompConnection.disconnect(); } }
消费者
QUEUE_FLIGHT_ASSIGNPARK 是需要订阅通道名
package com.ruoyi.web.controller.ActiveMQ; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONException; import com.alibaba.fastjson.JSONObject; import com.ruoyi.admin.domain.entity.Dto.BullyingDto; import com.ruoyi.admin.service.WarningService; import com.ruoyi.common.websocket.WebSocket; import com.ruoyi.web.controller.ActiveMQ.JmsProducer; import org.apache.activemq.transport.stomp.StompConnection; import org.apache.activemq.transport.stomp.StompFrame; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.ApplicationListener; import org.springframework.context.event.ContextRefreshedEvent; import org.springframework.stereotype.Component; import javax.annotation.Resource; import java.net.SocketTimeoutException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Map; import javax.annotation.Resource; //消费者 @Component public class JmsConsumer implements ApplicationListener<ContextRefreshedEvent> { private static Logger LOG = LoggerFactory.getLogger(JmsConsumer.class); @Resource public JmsProducer jmsProducer; @Resource private WebSocket webSocket; @Autowired private WarningService warningService; private static final String QUEUE_FLIGHT_ASSIGNPARK = "test001"; @Override public void onApplicationEvent(ContextRefreshedEvent contextRefreshedEvent) { try { consumeMsg(QUEUE_FLIGHT_ASSIGNPARK); } catch (Exception e) { LOG.error(e.getMessage(), e); } } /** * 从mq中消费消息 * * @param queueName * @throws Exception */ public void consumeMsg(String queueName) throws Exception { LOG.info("*********从消息队列中获取结果、并推送给前端**************"); new Thread(() -> { while (true) { StompFrame frame; String messageId = ""; StompConnection stompConnection = null; try { String ack = "client"; stompConnection = jmsProducer.connectionFactory(); stompConnection.subscribe(queueName, ack); stompConnection.keepAlive(); // 注意,如果没有接收到消息, // 这个消费者线程会停在这里,直到本次等待超时 long waitTimeOut = 30000; frame = stompConnection.receive(waitTimeOut); Map<String, String> headers = frame.getHeaders(); messageId = headers.get("message-id"); LOG.info("消息id:{}", messageId); //具体的业务处理...... //取出推送信息中的msg String msg = frame.getBody(); LOG.info(msg); // 在ack是client标记的情况下,确认消息 if ("client".equals(ack)) { stompConnection.ack(messageId); LOG.info("确认消息"); } } catch (SocketTimeoutException e) { LOG.error(e.getMessage()); continue; } catch (JSONException ex) { LOG.error("message_id:{},数据异常:{}", messageId, ex.getMessage()); continue; } catch (Exception e) { LOG.error(e.getMessage()); continue; } finally { try { stompConnection.ack(messageId); // LOG.info(); stompConnection.disconnect(); } catch (Exception e) { LOG.error(e.getMessage()); } } } }).start(); } }
标签:LOG,ActiveMQ,Stomp,ruoyi,stompConnection,org,import,activemq,String From: https://www.cnblogs.com/chuangsi/p/17341499.html