一、前言
創(chuàng)新互聯(lián)建站專業(yè)為企業(yè)提供寧河網(wǎng)站建設、寧河做網(wǎng)站、寧河網(wǎng)站設計、寧河網(wǎng)站制作等企業(yè)網(wǎng)站建設、網(wǎng)頁設計與制作、寧河企業(yè)網(wǎng)站模板建站服務,十多年寧河做網(wǎng)站經(jīng)驗,不只是建網(wǎng)站,更提供有價值的思路和整體網(wǎng)絡服務。
在消息中間件中有 2 個重要的概念:消息代理和目的地。當消息發(fā)送者發(fā)送消息后,消息就被消息代理接管,消息代理保證消息傳遞到指定目的地。
我們常用的消息代理有 JMS 和 AMQP 規(guī)范。對應地,它們常見的實現(xiàn)分別是 ActiveMQ 和 RabbitMQ。
二、整合 ActiveMQ
2.1 添加依賴
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-activemq</artifactId> </dependency> <!-- 如果需要配置連接池,添加如下依賴 --> <dependency> <groupId>org.apache.activemq</groupId> <artifactId>activemq-pool</artifactId> </dependency>
2.2 添加配置
# activemq 配置 spring.activemq.broker-url=tcp://192.168.2.12:61616 spring.activemq.user=admin spring.activemq.password=admin spring.activemq.pool.enabled=false spring.activemq.pool.max-connections=50 # 使用發(fā)布/訂閱模式時,下邊配置需要設置成 true spring.jms.pub-sub-domain=false
此處 spring.activemq.pool.enabled=false,表示關閉連接池。
2.3 編碼
配置類:
@Configuration public class JmsConfirguration { public static final String QUEUE_NAME = "activemq_queue"; public static final String TOPIC_NAME = "activemq_topic"; @Bean public Queue queue() { return new ActiveMQQueue(QUEUE_NAME); } @Bean public Topic topic() { return new ActiveMQTopic(TOPIC_NAME); } }
負責創(chuàng)建隊列和主題。
消息生產(chǎn)者:
@Component public class JmsSender { @Autowired private Queue queue; @Autowired private Topic topic; @Autowired private JmsMessagingTemplate jmsTemplate; public void sendByQueue(String message) { this.jmsTemplate.convertAndSend(queue, message); } public void sendByTopic(String message) { this.jmsTemplate.convertAndSend(topic, message); } }
消息消費者:
@Component public class JmsReceiver { @JmsListener(destination = JmsConfirguration.QUEUE_NAME) public void receiveByQueue(String message) { System.out.println("接收隊列消息:" + message); } @JmsListener(destination = JmsConfirguration.TOPIC_NAME) public void receiveByTopic(String message) { System.out.println("接收主題消息:" + message); } }
消息消費者使用 @JmsListener 注解監(jiān)聽消息。
2.4 測試
@RunWith(SpringRunner.class) @SpringBootTest public class JmsTest { @Autowired private JmsSender sender; @Test public void testSendByQueue() { for (int i = 1; i < 6; i++) { this.sender.sendByQueue("hello activemq queue " + i); } } @Test public void testSendByTopic() { for (int i = 1; i < 6; i++) { this.sender.sendByTopic("hello activemq topic " + i); } } }
打印結(jié)果:
接收隊列消息:hello activemq queue 1
接收隊列消息:hello activemq queue 2
接收隊列消息:hello activemq queue 3
接收隊列消息:hello activemq queue 4
接收隊列消息:hello activemq queue 5
測試發(fā)布/訂閱模式時,設置 spring.jms.pub-sub-domain=true
接收主題消息:hello activemq topic 1
接收主題消息:hello activemq topic 2
接收主題消息:hello activemq topic 3
接收主題消息:hello activemq topic 4
接收主題消息:hello activemq topic 5
三、整合 RabbitMQ
3.1 添加依賴
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-amqp</artifactId> </dependency>
3.2 添加配置
spring.rabbitmq.host=192.168.2.30 spring.rabbitmq.port=5672 spring.rabbitmq.username=light spring.rabbitmq.password=light spring.rabbitmq.virtual-host=/test
3.3 編碼
配置類:
@Configuration public class AmqpConfirguration { //=============簡單、工作隊列模式=============== public static final String SIMPLE_QUEUE = "simple_queue"; @Bean public Queue queue() { return new Queue(SIMPLE_QUEUE, true); } //===============發(fā)布/訂閱模式============ public static final String PS_QUEUE_1 = "ps_queue_1"; public static final String PS_QUEUE_2 = "ps_queue_2"; public static final String FANOUT_EXCHANGE = "fanout_exchange"; @Bean public Queue psQueue1() { return new Queue(PS_QUEUE_1, true); } @Bean public Queue psQueue2() { return new Queue(PS_QUEUE_2, true); } @Bean public FanoutExchange fanoutExchange() { return new FanoutExchange(FANOUT_EXCHANGE); } @Bean public Binding fanoutBinding1() { return BindingBuilder.bind(psQueue1()).to(fanoutExchange()); } @Bean public Binding fanoutBinding2() { return BindingBuilder.bind(psQueue2()).to(fanoutExchange()); } //===============路由模式============ public static final String ROUTING_QUEUE_1 = "routing_queue_1"; public static final String ROUTING_QUEUE_2 = "routing_queue_2"; public static final String DIRECT_EXCHANGE = "direct_exchange"; @Bean public Queue routingQueue1() { return new Queue(ROUTING_QUEUE_1, true); } @Bean public Queue routingQueue2() { return new Queue(ROUTING_QUEUE_2, true); } @Bean public DirectExchange directExchange() { return new DirectExchange(DIRECT_EXCHANGE); } @Bean public Binding directBinding1() { return BindingBuilder.bind(routingQueue1()).to(directExchange()).with("user"); } @Bean public Binding directBinding2() { return BindingBuilder.bind(routingQueue2()).to(directExchange()).with("order"); } //===============主題模式============ public static final String TOPIC_QUEUE_1 = "topic_queue_1"; public static final String TOPIC_QUEUE_2 = "topic_queue_2"; public static final String TOPIC_EXCHANGE = "topic_exchange"; @Bean public Queue topicQueue1() { return new Queue(TOPIC_QUEUE_1, true); } @Bean public Queue topicQueue2() { return new Queue(TOPIC_QUEUE_2, true); } @Bean public TopicExchange topicExchange() { return new TopicExchange(TOPIC_EXCHANGE); } @Bean public Binding topicBinding1() { return BindingBuilder.bind(topicQueue1()).to(topicExchange()).with("user.add"); } @Bean public Binding topicBinding2() { return BindingBuilder.bind(topicQueue2()).to(topicExchange()).with("user.#"); } }
RabbitMQ 有多種工作模式,因此配置比較多。想了解相關內(nèi)容的讀者可以查看《RabbitMQ 工作模式介紹》或者自行百度相關資料。
消息生產(chǎn)者:
@Component public class AmqpSender { @Autowired private AmqpTemplate amqpTemplate; /** * 簡單模式發(fā)送 * * @param message */ public void simpleSend(String message) { this.amqpTemplate.convertAndSend(AmqpConfirguration.SIMPLE_QUEUE, message); } /** * 發(fā)布/訂閱模式發(fā)送 * * @param message */ public void psSend(String message) { this.amqpTemplate.convertAndSend(AmqpConfirguration.FANOUT_EXCHANGE, "", message); } /** * 路由模式發(fā)送 * * @param message */ public void routingSend(String routingKey, String message) { this.amqpTemplate.convertAndSend(AmqpConfirguration.DIRECT_EXCHANGE, routingKey, message); } /** * 主題模式發(fā)送 * * @param routingKey * @param message */ public void topicSend(String routingKey, String message) { this.amqpTemplate.convertAndSend(AmqpConfirguration.TOPIC_EXCHANGE, routingKey, message); } }
消息消費者:
@Component public class AmqpReceiver { /** * 簡單模式接收 * * @param message */ @RabbitListener(queues = AmqpConfirguration.SIMPLE_QUEUE) public void simpleReceive(String message) { System.out.println("接收消息:" + message); } /** * 發(fā)布/訂閱模式接收 * * @param message */ @RabbitListener(queues = AmqpConfirguration.PS_QUEUE_1) public void psReceive1(String message) { System.out.println(AmqpConfirguration.PS_QUEUE_1 + "接收消息:" + message); } @RabbitListener(queues = AmqpConfirguration.PS_QUEUE_2) public void psReceive2(String message) { System.out.println(AmqpConfirguration.PS_QUEUE_2 + "接收消息:" + message); } /** * 路由模式接收 * * @param message */ @RabbitListener(queues = AmqpConfirguration.ROUTING_QUEUE_1) public void routingReceive1(String message) { System.out.println(AmqpConfirguration.ROUTING_QUEUE_1 + "接收消息:" + message); } @RabbitListener(queues = AmqpConfirguration.ROUTING_QUEUE_2) public void routingReceive2(String message) { System.out.println(AmqpConfirguration.ROUTING_QUEUE_2 + "接收消息:" + message); } /** * 主題模式接收 * * @param message */ @RabbitListener(queues = AmqpConfirguration.TOPIC_QUEUE_1) public void topicReceive1(String message) { System.out.println(AmqpConfirguration.TOPIC_QUEUE_1 + "接收消息:" + message); } @RabbitListener(queues = AmqpConfirguration.TOPIC_QUEUE_2) public void topicReceive2(String message) { System.out.println(AmqpConfirguration.TOPIC_QUEUE_2 + "接收消息:" + message); } }
消息消費者使用 @RabbitListener 注解監(jiān)聽消息。
3.4 測試
@RunWith(SpringRunner.class) @SpringBootTest public class AmqpTest { @Autowired private AmqpSender sender; @Test public void testSimpleSend() { for (int i = 1; i < 6; i++) { this.sender.simpleSend("test simpleSend " + i); } } @Test public void testPsSend() { for (int i = 1; i < 6; i++) { this.sender.psSend("test psSend " + i); } } @Test public void testRoutingSend() { for (int i = 1; i < 6; i++) { this.sender.routingSend("order", "test routingSend " + i); } } @Test public void testTopicSend() { for (int i = 1; i < 6; i++) { this.sender.topicSend("user.add", "test topicSend " + i); } } }
測試結(jié)果略過。。。
踩坑提醒1:ACCESS_REFUSED – Login was refused using authentication mechanism PLAIN
解決方案:
1) 請確保用戶名和密碼是否正確,需要注意的是用戶名和密碼的值是否包含空格或制表符(筆者測試時就是因為密碼多了一個制表符導致認證失?。?/p>
2) 如果測試賬戶使用的是 guest,需要修改 rabbitmq.conf 文件。在該文件中添加 “l(fā)oopback_users = none” 配置。
踩坑提醒2:Cannot prepare queue for listener. Either the queue doesn't exist or the broker will not allow us to use it
解決方案:
我們可以登陸 RabbitMQ 的管理界面,在 Queue 選項中手動添加對應的隊列。
以上就是本文的全部內(nèi)容,希望對大家的學習有所幫助,也希望大家多多支持創(chuàng)新互聯(lián)。
當前題目:SpringBoot入門之消息中間件的使用
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