rabbitmq的java代碼簡單使用

引入pom內容：

<dependency><groupId>com.rabbitmq</groupId><artifactId>amqp-client</artifactId><version>3.3.4</version></dependency>

發送端代碼：

package com;import com.rabbitmq.client.Channel;import com.rabbitmq.client.Connection;import com.rabbitmq.client.ConnectionFactory;import com.rabbitmq.client.MessageProperties;public class Producer {private static String queueName = "queue2";public static void main(String[] args) throws Exception{ConnectionFactory factory = new ConnectionFactory();factory.setHost("127.0.0.1");factory.setUsername("admin");factory.setPassword("admin");Connection connection = factory.newConnection();Channel channel = connection.createChannel();channel.queueDeclare(queueName, true, false, false, null);                          for (int i = 0; i < 20; i++) {        //發送的訊息              String message = "hello world!"+i;              //往隊列中發出一條訊息              channel.basicPublish("", queueName, MessageProperties.PERSISTENT_TEXT_PLAIN, message.getBytes());              System.out.println(" [x] Sent '" + message + "'");  //            Thread.sleep(1000);}                        //關閉頻道和串連          channel.close();          connection.close(); }}

接收端代碼：

package com;import com.rabbitmq.client.Channel;import com.rabbitmq.client.Connection;import com.rabbitmq.client.ConnectionFactory;import com.rabbitmq.client.QueueingConsumer;public class Consumer {private static String queueName = "queue2";public static void main(String[] args) throws Exception {ConnectionFactory factory = new ConnectionFactory();factory.setHost("127.0.0.1");factory.setUsername("admin");factory.setPassword("admin");Connection connection = factory.newConnection();Channel channel = connection.createChannel();// 聲明隊列，主要為了防止訊息接收者先運行此程式，隊列還不存在時建立隊列。channel.queueDeclare(queueName, true, false, false, null);System.out.println(Consumer.class.hashCode()+ " [*] Waiting for messages. To exit press CTRL+C");// 建立隊列消費者QueueingConsumer consumer = new QueueingConsumer(channel);// 設定最大服務訊息接收數量int prefetchCount = 1;channel.basicQos(prefetchCount);boolean ack = false; // 是否自動確認訊息被成功消費channel.basicConsume(queueName, ack, consumer); // 指定消費隊列while (true) {// nextDelivery是一個阻塞方法（內部實現其實是阻塞隊列的take方法）QueueingConsumer.Delivery delivery = consumer.nextDelivery();String message = new String(delivery.getBody());System.out.println(" [x] Received '" + message + "'");channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);Thread.sleep(2000);}}}