RabbitMQ的使用（五）RabbitMQ Java Client简单生产者、消费者代码示例

pom文件：

1. <dependencies>
2. <dependency>
3. <groupId>com.rabbitmq</groupId>
4. <artifactId>amqp-client</artifactId>
5. <version>5.0.0</version>
6. </dependency>
7.  
8. <dependency>
9. <groupId>org.springframework.amqp</groupId>
10. <artifactId>spring-rabbit</artifactId>
11. <version>2.0.2.RELEASE</version>
12. </dependency>
13.  
14. <dependency>
15. <groupId>org.springframework.boot</groupId>
16. <artifactId>spring-boot-starter-web</artifactId>
17. </dependency>
18.  
19. <dependency>
20. <groupId>org.springframework.boot</groupId>
21. <artifactId>spring-boot-starter-amqp</artifactId>
22. </dependency>
23. </dependencies>

连接工具类：

1. package top.wj.rabbitmq.client.utils;
2.  
3. import com.rabbitmq.client.Channel;
4. import com.rabbitmq.client.Connection;
5. import com.rabbitmq.client.ConnectionFactory;
6.  
7. import java.util.HashMap;
8. import java.util.Map;
9.  
10. public class ChannelUtils {
11. public static Channel getChannelInstance(String connectionDescription) {
12. try {
13. ConnectionFactory connectionFactory = getConnectionFactory();
14. Connection connection = connectionFactory.newConnection(connectionDescription);
15. return connection.createChannel();
16. } catch (Exception e) {
17. throw new RuntimeException("获取Channel连接失败");
18. }
19. }
20.  
21. private static ConnectionFactory getConnectionFactory() {
22. ConnectionFactory connectionFactory = new ConnectionFactory();
23.  
24. // 配置连接信息
25. connectionFactory.setHost("127.0.0.1");
26. connectionFactory.setPort(5672);
27. connectionFactory.setVirtualHost("/");
28. connectionFactory.setUsername("guest");
29. connectionFactory.setPassword("guest");
30.  
31. // 网络异常自动连接恢复
32. connectionFactory.setAutomaticRecoveryEnabled(true);
33. // 每10秒尝试重试连接一次
34. connectionFactory.setNetworkRecoveryInterval(10000);
35.  
36. return connectionFactory;
37. }
38. }

创建生产者：

1. package top.wj.rabbitmq.client.producer;
2.  
3. import com.rabbitmq.client.AMQP;
4. import com.rabbitmq.client.BuiltinExchangeType;
5. import com.rabbitmq.client.Channel;
6. import top.wj.rabbitmq.client.utils.ChannelUtils;
7.  
8. import java.io.IOException;
9. import java.util.HashMap;
10. import java.util.concurrent.TimeoutException;
11.  
12. public class MessageProducer {
13. public static void main(String[] args) throws IOException, TimeoutException {
14. Channel channel = ChannelUtils.getChannelInstance("队列消息生产者");
15.  
16. // 声明交换机 (交换机名, 交换机类型, 是否持久化, 是否自动删除, 是否是内部交换机, 交换机属性);
17. channel.exchangeDeclare("rabbitmq.wj", BuiltinExchangeType.DIRECT, true, false, false, new HashMap<>());
18.  
19. // 设置消息属性 发布消息 (交换机名, Routing key, 可靠消息相关属性 后续会介绍, 消息属性, 消息体);
20. AMQP.BasicProperties basicProperties = new AMQP.BasicProperties().builder().deliveryMode(2).contentType("UTF-8").build();
21. channel.basicPublish("rabbitmq.wj", "add", false, basicProperties, "body中的消息内容！".getBytes());
22. }
23. }

创建消费者：

1. package top.wj.rabbitmq.client.consumer;
2.  
3. import com.rabbitmq.client.*;
4. import top.wj.rabbitmq.client.utils.ChannelUtils;
5.  
6. import java.io.IOException;
7. import java.util.HashMap;
8. import java.util.concurrent.TimeoutException;
9.  
10. public class MessageConsumer {
11. public static void main(String[] args) throws IOException, TimeoutException {
12. Channel channel = ChannelUtils.getChannelInstance("队列消息消费者");
13.  
14. // 声明队列 (队列名, 是否持久化, 是否排他, 是否自动删除, 队列属性);
15. AMQP.Queue.DeclareOk declareOk = channel.queueDeclare("rabbitmq.wj.add", true, false, false, new HashMap<>());
16.  
17. // 声明交换机 (交换机名, 交换机类型, 是否持久化, 是否自动删除, 是否是内部交换机, 交换机属性);
18. channel.exchangeDeclare("rabbitmq.wj", BuiltinExchangeType.DIRECT, true, false, false, new HashMap<>());
19.  
20. // 将队列Binding到交换机上 (队列名, 交换机名, Routing key, 绑定属性);
21. channel.queueBind(declareOk.getQueue(), "rabbitmq.wj", "add", new HashMap<>());
22.  
23. // 消费者订阅消息 监听如上声明的队列 (队列名, 是否自动应答(与消息可靠有关 后续会介绍), 消费者标签, 消费者)
24. DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
25. @Override
26. public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
27. System.out.println(consumerTag);
28. System.out.println(envelope.toString());
29. System.out.println(properties.toString());
30. System.out.println("消息内容:" + new String(body));
31. }
32. };
33. channel.basicConsume(declareOk.getQueue(), true, "消费者标签",defaultConsumer );
34. }
35. }

控制台打印信息：

1.  
2. 消费者标签
3. Envelope(deliveryTag=1, redeliver=false, exchange=rabbitmq.wj, routingKey=add)
4. #contentHeader<basic>(content-type=UTF-8, content-encoding=null, headers=null, delivery-mode=2, priority=null, correlation-id=null, reply-to=null, expiration=null, message-id=null, timestamp=null, type=null, user-id=null, app-id=null, cluster-id=null)
5. 消息内容:body中的消息内容！

rabbitmq管理界面显示：